Wednesday, 30 September 2009

Canna 'Alice McGuigan'


A tall Crozy Group cultivar; dark foliage, upright habit; round stems, coloured purple; panicles of flowers are reflexed, burnt-red rayed with apricot, throat apricot, staminodes are medium size, edges irregular, petals purple, fully self-cleaning, good bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific.


Introduced by Malcolm Dalebö, Claines Canna Collection, Worcester, England, EU in 2006. Seedling from C. ‘Ingebourg’ x open.

Tuesday, 29 September 2009

Stuttgart chlorosis



The variegation in Canna ‘Stuttgart’ foliage is different from other forms of Canna variegation. It is caused by chlorosis, and in certain cases the plants have “whited” themselves to death, i.e. photosynthesis cannot take place at all. 



This is also why the chlorotic foliage eventually turns brown; the tissue dies without the ability to photosynthesise which means that no water and its dissolved minerals is being drawn up to the leaf. 


Attempts to stop the browning are doomed to fail, as this is just an unsupportable plant form.

Monday, 28 September 2009

Canna 'Alfred Young'


A medium sized Premier Group cultivar; green foliage, oval shaped, branching habit; triangular stems, coloured green; spikes of flowers are open, self-coloured redcurrant, staminodes are medium size, edges frilled, petals red, fully self-cleaning, good bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured pink and purple; tillering is average. 

Introduced by Malcolm Dalebö, Claines Canna Collection, Worcester, England, EU in 2006. This is a seedling from C. ‘Jessie Dalebö’ x open.


Sunday, 27 September 2009

Canna 'Albino'


A medium sized Premier Group cultivar; green foliage, oval shaped, transparent margin, spreading habit; round stems, coloured green; flowers are open, cream with rose-red spots, staminodes are medium size, edges regular, low bloomer; fertile both ways, not known if true to type, not self-pollinating; rhizomes are thick, up to 3 cm in diameter, coloured white.
The name was in use in 1942 when Kelsey and Dayton included it in their work "Standardized Plant Names".

Saturday, 26 September 2009

Canna 'Alberich'


A small Premier Group cultivar; glaucous green foliage, mucronate shaped, maroon margin, branching habit; round stems, coloured purple; flowers are open, pink (RHS 38A) and salmon, staminodes are large, edges lightly frilled, labellum is streaked with pale yellow, stamen is markeded with pale yellow, petals purple with farina, fully self-cleaning, good bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and purple; tillering is slow. 
Introduced by W. Pfitzer, Fellbach, Germany, EU in 1949. The leaves are distinctively cupped at the tips. Overall, the plant has a wide combination of colours that make it stand out. Synonyms: C. 'Albéric', C. 'Albèric', C. 'Alberick', C. 'Albricht'

Friday, 25 September 2009

Canna 'Alba Rosea Grandiflora'


A medium sized Crozy Group cultivar; green foliage, oval-acuminate shaped, spreading habit; round stems, coloured purple; spikes of flowers are open, rose and amber, throat rose, staminodes are medium size, edges regular, stamen is amber, style is pale pink, petals purple, average bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white; tillering is slow. 


Introduced by W. P. Simmons in 1892. Earliest research reference is Henderson's Catalogue of 1897, which also refers to it as 'Peachblow'. Synonyms: C. 'Albo-rosea grandiflora', C. 'Peachblow'

Thursday, 24 September 2009

Canna 'Aida'


A medium sized Premier Group cultivar; green foliage; flowers are old-rose tinged with salmon, staminodes are large, edges lightly frilled, stamen is marked with gold, good bloomer; fertile both ways, not known if true to type, not self-pollinating; rhizomes are thick, up to 3 cm in diameter, coloured white; tillering is average. 

One of the Opera series of Canna bred by Howard and Smith Nursery of Los Angeles, USA in the 1930's. This series were added to by Wayside Gardens Nurseries in the USA by including C. 'Rosenkavalier', bred by Wilhelm Pfitzer.

Wednesday, 23 September 2009

Canna 'Africa'


A tall Italian Group cultivar; bronze foliage, ovoid shaped, branching habit; panicles of flowers are open, self-coloured orange-red, throat gold, staminodes are large, edges lightly frilled, petals purple, fully self-cleaning, average bloomer; seed is sterile, pollen is low fertile; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific. 





Introduced by C. Sprenger, Dammann & Co., Naples, Italy, EU in 1898. Research indicates that the first mention of this heritage cultivar is in the RHS Journal of 1898, the last record is Tropical Plants and Gardening, H.F. MacMillan, 5th Edition, 1954. Our specimen was imported from Austra-Asia.

Tuesday, 22 September 2009

Planning winter storage


We have now arrived at the time of the year when we have to start planning what to do with our Cannas over the winter. Last Saturday saw the temperature drop to 8Deg Centigrade, which is low enough to start slowing down the excellent growth that Cannas should be making during September, when they come to a crescendo of flowers and new foliage.

Those with only a few Cannas to look after can decide to bring indoors into a conservatory and keep them growing over the winter, as Canna is a 52 week plant, or to wait until the frosts and move the plants indoors into a garage or shed after cutting down the foliage.

Our approach is to dig the plants out of the beds in which they are growing, using a garden fork to minimise damage, and to retain about a third of the plant, which is then planted in soil inside one of our three poly tunnels. This involves a lot of work, but will provide much new compost from the foliage and stalks.

Canna is a plant from the tropics and sub-tropics, and just being under the ground and inside a tunnel is not enough protection from the winter weather, as last year we recorded temperature of -10F in the main tunnel, so we will also cover the plants with horticultural fleece. Those with small unheated greenhouses may be able to do the same.

Others prefer to remove all soil, wash and allow to dry for a few days and then store in damp newpaper, vermiculite or perlite in dry conditions about 8F. 

Monday, 21 September 2009

Canna 'Adolf Ernst'



A medium sized Crozy Group cultivar; purple foliage, oval shaped, white margin, spreading habit; oval stems, coloured green; flowers are open, red with a yellow margin, staminodes are medium size, edges irregular; fertile both ways, not known if true to type, not self-pollinating, capsules oblong; rhizomes are thick, up to 3 cm in diameter, coloured pink and purple; tillering is average. 


Introduced by G. Ernst. Named for Adolf Ernst, a leading botanist in the 19th Century, and a correspondant with Charles Darwin. 

Sunday, 20 September 2009

Indian summer to continue



BRITAIN can look forward to basking in yet more glorious sunshine as our Indian summer looks set to carry on into next month.

But let’s hope the Met Office has got its forecast right this time after a washout summer. Forecasters there faced a storm of criticism for a long range forecast earlier this year of a “barbecue summer” that never happened.

The Met Office also says that the rest of this month will see a north-south split, with the south staying relatively dry and the north becoming wetter.

Forecasters Positive Weather Solutions, which uses comparisons between current trends and past weather patterns, agrees that the rest of September will be “dry with sunshine”. And it says in the south this should continue into October.

Its forecaster Jonathan Powell said: “Bar the odd rainy day, the remainder of September will be dry with lengthy periods of sunshine. “For the south of the UK, October will start the same way – dry, sunny, but rather chilly by night.”

Despite what seemed like washout weather, it was revealed yesterday that parts of the UK have had their driest summer since 2000, with Kent getting 77 per cent of its normal rainfall between June and August.

By mid-September, southern England and East Anglia had just 24 per cent of the rainfall expected for the whole month.

The only bad news there as far as Cannas are concerned is the chilly nights, so it's time to start watching out for night-time temperatures again, and to start clearing the last of the food crops out of the poly-tunnels. There is still courgettes, potatoes, spinach, beetroot, carrots, water melons, tomatoes, chilli's and other peppers to get picked, lifted and composted before fertilizing the soil again and rotavating ready for when the Cannas need to start their hibernation.

Saturday, 19 September 2009

Canna 'Admiration'

A medium sized Premier Group cultivar; green and purple variegated foliage, ovoid shaped, maroon margin, branching habit; spikes of flowers are open, self-coloured apricot, staminodes are large, edges irregular, petals purple with farina, fully self-cleaning, outstanding bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is prolific. 

Introduced by Malcolm Dalebö, Claines Canna Collection, Worcester, England, EU in 2008. The breeding is Canna 'Auguste Ferrier' x C. 'Theresa Blakey'.

Friday, 18 September 2009

Can you see the mountain?

As a boy when I lived at home in Norway there was a joke that if you could see the mountain it was about to rain, otherwise it was raining! OK, not very original, but at least we did not have to suffer Arthur Askey! (US readers will probably not understand that reference to a busy bee). Well, this weather here in the mid-west of England is getting beyond a joke. I’m beginning to reconsider that it must be the global warming thing. The weather is so unpredictable.


If you think about it, extra heat causes extra evaporation from the sea causes extra rain. Now I’m sure some scientists are jumping up and down shouting ‘Idiot!’ but you can’t get away from the fact that we’ve had years of summers more like monsoons.
It seems that we do get some dry-ish weather and the moment I think I can head for the main Canna collection beds, down comes some more rain. Anyway, we managed to grab a few hours down there today, but we have already has 3 weeks of high winds that are violently draining all moisture from the ground and foliage, so much that my bean crops have stopped growing 3 weeks earlier than normal. Digging shows no water for 6" down into the soil, in spite of the rain showers.

Really, it was quite depressing in Cannadom. Nothing has grown to its full height, there is very little seed to collect and everywhere there is poor foliage. We have had a couple of weeks of half-decent sunshine and the later leaves that have unfurled are showing good healthy photosynethis and show no signs of stress markings, unlike those for the previous 6 weeks which sometimes did not have the energy to unfurl themselves and displayed signs of chlorosis. We had to manually unfurl the leaves to enable the growing point to continue upwards and not just rot inside the unfurled leaf. The resultant leaf is a mixture of green and yellow and often looks like it has virus. Maybe it has, and the lack of vitality that stops the unfurling of the leaves is due to that cause, or just as likely its the lack of light causing stress in the affected plant, which can't then unfold it's leaves. Sending to the labs will establish the cause, visual inspection is not enough.

With every other genus people accept that lack of light causes foliage damage, but in Canna there is a vocal minority who cannot acknowledge that poor light causes foliage stress, even though all learned treatises for 150 years state that Cannas must have their 8 hours of light every day. It beggars belief! If they don't get their 8 hours of light, what do they do? Start dealing cards and join a poker school? Of course not, they display stress through the only mechanism they have, i.e. their leaves. Now they have a limited vocabulary and such stress can easily be mistaken for one of the few virus types that affect Canna foliage. 

The defintion of chlorosis is "The loss of chlorophyll from the tissues of a plant, resulting from microbial infection, viral infection, the action of certain phytotoxins, the lack of light, to magnesium or iron deficiency, etc. Chlorotic tissues commonly appear yellowish. "

Lack of light, infection, and mineral deficiencies causes chlorosis. Can you see the mountain?

Thursday, 17 September 2009

Canna 'Admiral Courbet'

A medium sized Crozy Group cultivar; green foliage, oval shaped, spreading habit; round stems, coloured green; panicles of flowers are open, yellow with carmine spots, staminodes are medium size, edges irregular, petals yellow, fully self-cleaning, low bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white; tillering is average. 

Introduced by A. Crozy, Lyon, France in 1888, and the winner of a Royal Horticultural Society First Class Certificate in the same year. Named for Amédée Courbet (1828–1885), who was a French Admiral, three ships of the French Navy have been named in his honour, including the stealth frigate Courbet, presently commissioned. 

Wednesday, 16 September 2009

Canna 'Admiral Aurellan'

A medium sized Crozy Group cultivar; dark foliage, oval shaped, maroon margin, upright habit; round stems, coloured purple; panicles of flowers are open, orange-red with an old-rose blush, staminodes are medium size, edges irregular, stamen is gold, petals red, fully self-cleaning, exceptional bloomer, blooms open in the evening; fertile both ways, not self-pollinating or true to type, capsules round; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific. 

Introduced by A. Crozy, Lyon, France in 1895.

Tuesday, 15 September 2009

Canna 'Abraham Lincoln'

A medium sized Crozy Group cultivar; dark green and red variegated foliage, oval shaped, maroon margin, upright habit; round stems, coloured green; panicles of flowers are open, red speckled with salmon, staminodes are large, edges regular, petals purple, fully self-cleaning, good bloomer; fertile both ways, not self-pollinating or true to type, capsules round; rhizomes are thick, up to 3 cm in diameter, coloured pink and purple; tillering is average.


The unique dark striations on the foliage, topped by pink flowers with salmon markings, together create a unique combination.. The earliest reference is 1942 Kelsey and Dayton, "Standardized Plant Names".

Monday, 14 September 2009

Canna 'A. Gasquet'

A small Crozy Group cultivar; green foliage, oval-acuminate shaped, spreading habit; round stems, coloured green; flowers are open, self-coloured pale pink, throat pale yellow, staminodes are medium size, edges ruffled, labellum is pale-rose, stamen is pale pink, low bloomer, blooms open in the evening; fertile both ways, not self-pollinating or true to type, capsules ellipsoid; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is average. 

Introduced by Vilmorin-Andrieux, France, EU.


Sunday, 13 September 2009

Conserving plants for the future

It is important that we hand over to the next generation as much viable plant material as possible. This allows them the opportunity to breed different strains, and as science progresses, to do things that we of this generation cannot imagine. This will probably include the ability to easily remove virus from affected plants, and put varieties back into gardendom again.

Our commercial nurseries understandably concentrate their attention on maintaining desirable and fashionable plants that are easily propagated and cultivated. Botanical gardens concentrate on preserving the wild species, and very few conserve garden cultivars.

With a projected two thirds of the world's plant species being lost by the end of the 21st century, the importance of home gardeners and enthusiastic collectors in contributing to plant conservation cannot be underestimated. 

Consequences for the loss of these plants are enormous, including the elimination of valuable genes that have never been fully researched. We need to retain and record as many cultivated varieties of plants as possible. 

This is why here in the UK the  National Council for the Conservation of Plants and Gardens (NCCPG) was founded and their policy is to preserve all cultivars for future generations, and similar organisations exist in many other developed countries of the world.

At Claines Canna we have recently been criticised publicly for not immediately destroying any specimen that comes into our possession that is thought to have virus. When foliage is sent to the labs for testing there are always a few surprises. Specimens thought to be virus-free are found to be affected, and others that seem to be affected are reported as being free from virus. Laboratory testing is the only sure way forward. 

The statement "If it looks like virus, then it is virus" that is currently being pedalled as wisdom is an over simplification, as is confirmed by laboratory testing. We have ourselves been down the route of relying on visual inspection, after all it was all we had at that time, but it is not infallible.

In the meantime we will continue with our policy of segregating our specimens into those that highly probably have virus, suspects, those being treated and those that are confirmed as virus-free. These are in separated areas, so that there is no contact. In addition, new specimens are put into quarantine until they can be categorised. 


I understand that several other serious collectors around the world are following similar hygiene practices and I believe that it is the only sensible approach, if we are not to loose valuable DNA from our heritage but also to grow and sell virus-free Cannas.

Finally, I believe that we need to stop being obsessed about the subject of virus as long as we continue to make steady progress with supplies of clean material. Otherwise, we are in danger of frightening away new customers and recruits to the Canna genus who will get the impression that virus in Cannas is worse than in others. Many other genus have far worse problems to deal with.

-Action Plan for Conservation of Plants in Cultivation, from NCCPG and RHS
-Australian Network for Plant Conservation
-National Council for the Conservation of Plants and Gardens (NCCPG)



Saturday, 12 September 2009

Canna 'A. Eisenbarth'

A small Crozy Group cultivar; green foliage, oval shaped, spreading habit; round stems, coloured green; flowers are open, self-coloured pink, throat lemon, staminodes are medium size, edges regular, petals yellow, fully self-cleaning, good bloomer, blooms open in the evening; fertile both ways, not self-pollinating or true to type, capsules round; rhizomes are thick, up to 3 cm in diameter, coloured white; tillering is slow.

Introduced by W. Pfitzer, Stadt Felbach, Stuttgart, Germany, EU. It is a cross of C. 'Madame Crozy' x 'Barrone Renwardy'. Synonym: C. 'A. Gauthier'

Friday, 11 September 2009

Short-haired bumblebee coming home

British conservationists have drawn up plans to repopulate the countryside with a species of bumblebee that was declared extinct here nearly a decade ago.

A queen short-haired bumblebee

The short-haired bumblebee officially died out in the UK in 2000, but descendents of the doomed community live on in small pockets of New Zealand, where they were taken to pollinate red clover in the late 19th century.

If the project is a success, it will mark the first time bees have been reintroduced to any country after the indigenous population died out.

Bumblebees and honeybees have been in decline nationwide in recent years. Bumblebees have suffered a dramatic loss of natural habitat, including wild flower and hay meadows, while disease and parasites have wiped out colonies of honeybees.

Scientists at the Bumblebee Conservation Trust will visit MacKenzie County in New Zealand's south island this autumn, and spend up to two months hunting and capturing queen bees as they emerge from hibernation. The area is one of the last strongholds of short-haired bumblebees in New Zealand.

Any queens that are netted will be reared in captivity on the island, by feeding them nectar and pollen collected from a variety of flowers. The queens will have mated before being caught, and can lay enough eggs to produce a colony of hundreds of sterile worker bees. Details of the project are unveiled at the British Science Association festival in Guildford today.

Scientists hope some of the bumblebee colonies raised in captivity will grow large enough to produce a second generation of queen bees. These will be flown back to Britain during the hibernation season and could be released into their new habitat in Dungeness in Kent as early as next spring.

"It's going to be difficult, but this might be our last chance," said Ben Davill, director of the Bumblebee Conservation Trust.

The short-haired bumblebee is one of two species to be declared extinct in Britain in the past 70 years, the other being Cullum's bumblebee. The insects have been hit hard by changes in agriculture, which have seen crop farmers replace nitrogen-replacing clover leys with fertiliser and hay meadows with silage.

The majority of Britain's remaining 24 bumblebee species are able to feed on a wide range of flowers, but the short-haired bumblebee is a more fussy eater and only visits a few types of flower that produce high quality pollen.

Nikki Gammans, who is running the reintroduction project, has been working with local farmers, landowners and the public in Kent to restore the habitat in Dungeness by ensuring it has enough flowers to sustain the bees when they are released. "We are doing our best for this and all bumblebee species and hopefully they can do the rest," said Gammans.

While this initiative is welcomed by all who care about our ecology, it is not going to solve the bigger bee problem, as these are a specialist species that can only survive in a limited number of spaces. We are still awaiting the answer to the desperate honey-bee decline, and no solution is readily available.

Thursday, 10 September 2009

At last some English weather!

Now climate change, like starving children, is generally a cause that the British prefer to empathise with when it happens on foreign, rather than domestic, soil. So we lament the loss of coral reefs; the rising sea level in the South Pacific; and we watched on TV as California burned and Australia experienced its warmest August, a record-breaking winter heat wave. But do we really have any idea what is happening in the most beautiful remote bits of our own backyard?

The lesson of this summer is that we are ignoring what is happening under our noses. If this summer is not an aberration, then it would appear that western Britain is under the cosh too; a kind of stealthy, watery Armageddon.

And if this is indeed the future, then the issue is more urgent than any of us realised. Many of us, inhabitants on both sides of the wet/dry divide, who are by instinct rather non-warmist, must now accept that the Atlantic lows are not only more frequent but have permanently shifted south. Certainly there seems an acceptance among scientists that the number of Atlantic hurricanes has doubled over the past century. One study, from the National Centre for Atmospheric Research in Colorado, concluded that warmer sea temperatures and altered wind patterns associated with climate change are fuelling the increase. And sea temperatures on Britain’s West Coast are indubitably rising.

If all this is correct, British delegates at the Copenhagen climate change summit in December should consider the pressing implications for tourism, agriculture, food security, health and public spending in Britain.

Take roads, for instance. In Scotland alone, one fifth of the main network has been identified as at risk of landslides, with extreme storm rainfall predicted to increase by between 10 and 30 per cent by the 2080s. On Monday, in Argyll, part of a mountainside supersaturated with rain collapsed on to a trunk road, effectively cutting off a vast swath of the county. Exactly the same thing happened, on the same stretch of road, in 2004 and 2007. It will take diggers weeks, possibly months, to stabilise the hillside and clear the road. The lesson: climate change is going to be hugely expensive, especially in rural and remote areas.

Today, we’re at the point where, scarily, the land simply can’t take much more rain. There is the sense that, as Scotty cried in Star Trek: “The engines cannae take it, captain.” Everywhere you go, there is the stink of rot. Timbers are swollen; doors stick; the ground, so engorged it can absorb no more, heaves beneath your feet. All we need is Harrison Ford to appear and we would have confirmation that we are trapped on the set of Blade Runner. As nothing else could, life in the West this summer has fulfilled Ridley Scott’s apocalyptic vision of climate change: perpetual rain, perpetual darkness.

Biblical portents abound. Toads claw at night at the back door, looking, I fear, for somewhere dry to go. Small creatures are drowning and dying. Those that can fly away have done so: the eaves are empty, the normally prolific swallows having disappeared weeks before their normal time. Fruit is dropping, half formed and rotting, on to lawns too wet to walk across, let alone cut.

Out of pity, one avoids intruding on the private grief of those who have to make their living outside. Farming is devastated. With dairy cows already housed inside, two months earlier than usual, and thousands of pounds worth of hay and grain lying rotting in sodden fields — unreachable, even if it stopped raining, by mechanical means — many farmers are desperate. In Cumbria the ground will be too soft to bear the weight of a combine harvester any time between now and Christmas.

We have cultivated a mordant pessimism. “Not raining shock” we say, peering from the window in the morning. We know by lunchtime it will have started again. We disembark from flights to London feeling as if we have travelled a thousand miles to a different continent: one where it does not rain and people wear summer clothes.

We in the west, at Worcester, seem to have been invisible to the rest of the UK. This is the 3rd summer in a row where the sun has been almost absent, in an area which I have always thought of as something of a sun trap. If it's not raining, then dark gloomy clouds hang perpetually overhead. Even my greenhouse tomatos are suffering.

In the last year, in the same way that you can look at the rings in the trunk of a tree and see the weather conditions over each year for hundreds of years, we can look at a stem of Cannas and by examing each leaf we know what the weather conditions have been over the months. We started out with some good foliage in May and early June, but then the sun vanished and we went for months with not enough light in many cases to allow our Cannas to even unfold their new leaves, so we have had to assist this most basic function. The energy to unfold Canna leaves comes only from sunlight.

Foliage from that period is a disaster, we have some leaves that never achieved even half of their photosynthesis capability and their foliage varies from pale yellow overall to striped green and various shades of yellow. In some cases the incessant rains have washed away much of the wax cuticle that protects the leaf from rain. I have very rarely seen this happen before in the twenty years that I have grown Cannas.

So far, in the second week of September, we have collected seed from 6 plants out of 230 plants! Why such a pathetically low number? Pollen only stays fertile for a few hours and rain quickly dissolves its potential.  We have had our potential seeds washed away by rain. This is not a figment of imagination, it is a hard fact!

Of course, if the doom mongers took a look at our Canna collection they would immediately condemn it as being totally devastated by virus, and the more inexperienced would come up with such trite statements as "if it looks like virus, then it's virus". In the west of England we don't need friends like this. We have enough problems to contend with, without having to contend with self-opinionated amateurs with no scientific knowledge.

We need another year like 2006 when we can get good growth from our Cannas and establish which have virus and which are stressed by abnormal weather conditions. In the meantime we can only keep growing and keeping the plants we are sure are virus-free separate from the rest of the collection, and keeping the virus suspects totally isolated from the rest. 

Ironically, some of the suspects have come from the homes of those who consider they have totally virus free collections. Once these specimens leave their glass house environments and hit the west country weather conditions they betray their inherent problems. Those problems are not necessarily virus, just the problems of sub-tropical plants trying to exist in an ever-more disturbed temperate-critical climate.

Wednesday, 9 September 2009

How gardens 'are richer in wildlife than farmland'


The countryside has been so 'trashed' by modern farming that the average garden now contains more wildlife than the same size plot of farmland, a leading plant expert has claimed.

Dr Ken Thompson – an expert in garden wildlife at Sheffield University – warned that huge swathes of rural Britain had been turned into ecological 'deserts' without weeds, wildflowers or insect life.

In contrast, Britain's 16 million gardens were home to an astonishingly rich diversity of plants, insects, mammals and birds, he said.

But he said the fashion for decking, paving and plastic turf in gardens was undermining their role as urban 'nature reserves'. 

'If you compare a garden with the equivalent area of intensive farmland, gardens are much better in terms of everything," he said.

"There are more spiders, beetles, bugs and birds. It’s slightly heretical thing to say, but most farmland would be improved by having a housing estate built on it from a biodiversity point of view."

His comments follow a major three year study into the plants, insects, mammals and birds living in Britain's back gardens.

The project - carried out in Sheffield - found that a typical garden contains several thousands worms, spiders and other invertebrates, and around 250 plants, Dr Thompson told the British Science Festival in Guildford.

The three year garden survey looked at 61 city gardens in detail. The researchers identified 1,166 plants and 700 species of invertebrates.  Around 42 per cent of the plants were native to Britain.

The research found that small city and town gardens were just as good at attracting wildlife as large ones. There was also little difference in the quality of wildlife in urban and suburban gardens.

Gardens were an essential haven for wildlife driven out of the countryside by modern farming techniques, pesticides and the destruction of hedgerows, ponds and wildflower meadows, he said.

'A wheat field contains just one plant – and what can live on one plant? The wind pollinates it and there is nothing for bees or butterflies and no where for birds to nest,' he said. 


I agree with everything stated in this Daily Mail article, except for the reference to people who want to enjoy their gardens and install decking and paving. The reason that there are hundreds of flowers and plants for wildlife to enjoy is because gardening enthusiasts want to enjoy their gardens, and if the price paid is paths and decking then so be it.

Unfortunately a sad brigade of eco-warriors have jumped on this bandwagon and the extreme wing of that movement would stop us gardening altogether and turn our gardens into wild-life reserves that can be enjoyed by animals, but not by us. 

Sorry, but I don't intend to let those idiots stop me from gardening and cultivating thousands of plants that feed wildlife and allow me to enjoy their company every gardening day, and in the evening when we sit outside on the decking sipping a well-earned glass of wine I have no feeling of guilt. 


Why do extremists always attempt to destroy what is good?

Tuesday, 8 September 2009

Canna 'Annei Rosea'

A tall Foliage Group cultivar; dark green foliage, very large, lanceolate shaped, maroon margin, upright habit; round stems; spikes of flowers are open, self-coloured carmine-rose, staminodes are narrow, edges irregular, petals red, not self-cleaning, late bloomer, blooms open in the evening; seed is sterile, pollen is fertile; rhizomes are long and thin, coloured pink and purple; tillering is prolific.

Introduced by E. Chaté et fils, route de Charenton, 143, Berey, France, EU. The flowers are few and late, and this is primarily a foliage plant, averaging about 2 ft. 4 ins long. Breeding is unknown seed parent x Canna 'Annei' as the polen parent.

Monday, 7 September 2009

Canna 'Annei Rubra'

Photo courtesy of Malcolm McFarland

A tall Foliage Group cultivar; deep green and purple variegated foliage, large, acuminate shaped, maroon margin, branching habit; medium thickness round stems, coloured purple; flowers are erect, self-coloured bright orange, staminodes are long and narrow, edges regular; seed is sterile, pollen is fertile; rhizomes are thick, up to 7 cm in diameter, coloured pink and purple; tillering is average. 

Introduced by E. Chaté et fils, route de Charenton, 143, Bercey, France, EU. in 1861. One of the most free-flowering of the Foliage Group of Cannas. Canna 'Annei' was the pollen parent.

Sunday, 6 September 2009

New introduction for 2010?

At Claines Canna we reduced the number of new seedlings we grew out this year, but we have still been pleased with the quality of what we have grown.

One that has really caught the eye is one with the elusive leopard spot markings, similar to one introduced by Raphaël Roger from Belgium last year. I must confess that immediately I saw a picture of that one I started making likely crosses to try and emulate that one. Amazingly we saw this youngster appear this year, it has a golden yellow base and strong red markings. Its parentage is Canna 'Florence Vaughan' (the real Crozy one) as the seed parent crossed with C. 'Souvenir de Madame Nardy' as the pollen parent. Altogether we made twelve different crosses and this year grew out 40 new seedlings, but only one has given us what we were looking for.

The seedling has strong green foliage and has grown about 60 cm (2ft) tall this first year, confined to a pot. The seedling has been numbered and if it performs well next year, in the soil as well as in a pot, then we will name it and register it with the KAVB, but it is important to trial any potential new introduction before registering and releasing it.

Saturday, 5 September 2009

Canna 'Party Piece'

One of the collections stock plants that has prospered this year is Canna 'Party Piece'. In spite of the foul weather it has already grown three stems and its spikes of flowers have been truly eye-catching.

It is a small Premier Group cultivar; green foliage, ovoid shaped, spreading habit; spikes of flowers are open, yellow-orange with a narrow gold margin, staminodes are large, fully self-cleaning, outstanding bloomer; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is prolific. 

Introduced by Malcolm Dalebö, Claines Canna Collection, Worcester, England, EU in 2008. The breeding is Canna 'Louis Cottin' x open. Once again, Louis Cottin has proved to be a great seed parent.

Friday, 4 September 2009

Canna 'Mademoiselle Rose Lombard'

A medium sized Foliage Group cultivar; green foliage, oval-acuminate shaped; round stems, coloured green; flowers are open, self-coloured pale pink, throat salmon, staminodes are narrow, edges regular; seed and are fertile.

Introduced by Herr. F. Lombard in the 1880's or earlier. The breeder succeeded in using pollen from C. 'Ehmanni' on other existing hybrids, to obtain many different foliage plants with large flowers for the time. The leaves are a magnificent Musa form, the flowers just as large as those of C. 'Ehmanni'; but they do not produce as many flowers as the Crozy Group.

Thursday, 3 September 2009

Canna 'Vesuv'


This ancient variety really looks like a volcano in full flight. Although primarily a foliage plant this one has very special flowers as well.
A medium sized Foliage Group cultivar; light green foliage, ovoid shaped, white margin, branching habit; oval stems, coloured green; flowers are erect, red and orange, staminodes are long and narrow, petals red, fully self-cleaning; fertile both ways, not true to type, self-pollinating; rhizomes are thick, up to 3 cm in diameter, coloured pink and purple; tillering is prolific.
Introduced by A. Crozy, Lyon, France in 1870.

Wednesday, 2 September 2009

Forecasters defend their prediction

Forecasters have defended their prediction of a 'barbecue summer' by claiming they got the temperature right - just not the amount of rain!

The Met Office has said Britain has basked in three months of above-average temperatures, but the warm weather has been spoiled by the wettest July for 100 years.

Figures show the country's average temperature over the last three months has been 14.8C - 0.7C above the normal.

August was the hottest month for many of us, with England 1C warmer than normal.

But the rain spoiled many people's summers, and the Met Office was heavily criticised for its 'barbecue summer' prediction.

Forecasters say they did not get it entirely wrong, but have now admitted they they find it difficult to accurately predict the amount of rain that will fall in summer. In April, they told us the summer would be hotter than the past two years and temperatures would reach 30C - and they were right.

However, warmer temperatures don't create growth in plants, that is done by light, and the sunlight was continuously blocked by rain clouds causing our Cannas to have as bad a year as the two previous growing years.

This is the third consecutive year when we have suffered these high rain levels, at least this year we have not suffered flooding! The wild species plants have suffered worse than I have ever seen them, and most of the foliage is yellow due to lack of light. These all come directly from tropical and sub-tropical climates and cannot cope with the small amount of light reaching them in what now appears to be the new typical British summer. There is no point in growing these plants outdoors, and we have no room in the poly tunnels during the summer months for anything that we cannot eat! So, reluctantly, the species will be dropped next year.

We first fell in love with Cannas nearly 20 years ago and started to collect them in ever increasing numbers, but if they had looked like ours currently do, then we would not have bothered. Hopefully next year will provide enough sunlight to provide us with a good growing year.

Tuesday, 1 September 2009

Canna 'Viva'


A medium sized Crozy Group cultivar; dark foliage, lanceolate shaped, upright habit; panicles of flowers are open, self-coloured vermilion, staminodes are medium size, edges irregular, petals purple with farina, fully self-cleaning; fertile both ways, not self-pollinating or true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is average.

Introduced by Ernest Turc, Angers, France, EU in 2000.