I would like to see more emphasis in the breeding programme on heat/drought tolerance. OK that is pretty selfish, given my location, but changing UK weather patterns must surely come into play at some point. I suggested in a customer survey in 2018 that DA at least put in a search facility to select roses best for warm climates, but that clearly fell on deaf ears. Perhaps they have so few, so didn’t want to....
@Marlorena, I think you should do the honours and start the new Rose Season 2020 thread It doesn’t matter if you can’t contribute so many photos this year because of the work you are having done, we all value your advice and I loved the rose history and anecdotes you posted on last year’s thread.
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
..oh thank you @Nollie ..that's very kind.. I'm glad somebody found something useful in my ramblings.. ….I think I'll leave it to another member this year...
Perhaps you've already done so but if you look on DA USA site, they list roses suitable for warm and cold zones... lots for zones 10/11.. that's a hot climate...
David Austin can be a bit thick about their marketing. I ordered a load of bare root roses direct from them for my Belgian garden about 20 years ago plus more for members of my gardening group and asked for a copy of their latest catalogue. They sent me the French version. Despite numerous requests over the years it seems they can't send an English catalogue to people living on the continent.
I gave up and took to buying potted DA roses form Belgian nurseries and have done the same here form French nurseries. It limits my choice but at least I knew the Belgian ones would survive in my garden plus the nursery takes the risk of a failed bare root plant and I paid the same price as bare root form DA.
Good tip about the USA website. I shall have a look there before I buy any more.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
That’s odd, @Obelixx, they send me the general European one, priced in euros but in English.
The DA roses do seem to behave differently in hot climates, either shoot up with lots of octopus canes, or don’t reach stated height, like Munstead Wood. But aren’t the usda climate zones to do with cold hardiness rather than heat tolerance, @Marlorena? Something that suits zone 11 but not zone 3 indicating that it is not cold tolerant, but not necessarily heat tolerant either. I have browsed the US site before, there was an article from one of their rosarians on best roses for southern states, but some of the ones he mentioned, like Lady of Shallot, I have, but the blooms fry in the heat! The Americans have developed a heat tolerance measure for plants too, but it’s not widely used yet...
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
@Nollie … yes it refers to average winter temps, but in the U.S zones 10 and 11 are also likely to be hot in summer.... it's difficult to relate for us because the Scilly Isles comes under zone 10 but without hot summers... The other one you're thinking of is the Sunset zones, which is mainly used in California.. it's a better measure of summer heat..
Also remember that DA roses are trialled in the U.S. in several places including two hot ones.. Farmers Branch Gardens in the Dallas/Fort Worth area of Texas … and Barona Casino Gardens in San Diego Southern California... although that's on the coast so may be cooler... but if they pass the test at Farmers Branch in very hot summers Dallas, you would think they would be alright where you are...?... but as always it's trial and error..
I'm quite enjoying Monty Don's American Gardens series and this evening's episode did make me laugh in a couple of ways... one lady in Charleston who probably never heard of him before said to Monty ''and you have a garden?'''....
...there was another lady in Charleston who told Monty her roses are grown as 'annuals' because of all the fungus diseases... Monty said he hadn't heard that term used for roses before.. ..Well, Monty... sorry to tell you but I've been growing roses as 'annuals' for years...
...most enjoyable series... I loved all the gardeners in this episode.. I thought some were a bit 'tubby'...? you don't see that over here so much with head gardeners...
It was more the AHS heat zones I was thinking of @Marlorena, but you have to know how many ‘heat days’ - over 30C - you have in a year to work out your heat zone. This site explains USDA cold hardiness zones, AHS heat zones and the Sunset climate zones:
DB didn’t do badly compared to others, didn’t fry as much, but as the heat zone mapping hasn’t (I don’t think) been done for Europe, yes it is still a guessing game. Be interesting to know of there is a source of the ones that passed the test in Texas...
Haven't watched last night’s Monty programme yet, looking forward to seeing it tonight. I recall he was pretty late in his gardening career getting into roses...
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
Posts
@Marlorena, I think you should do the honours and start the new Rose Season 2020 thread
….I think I'll leave it to another member this year...
Perhaps you've already done so but if you look on DA USA site, they list roses suitable for warm and cold zones... lots for zones 10/11.. that's a hot climate...
I gave up and took to buying potted DA roses form Belgian nurseries and have done the same here form French nurseries. It limits my choice but at least I knew the Belgian ones would survive in my garden plus the nursery takes the risk of a failed bare root plant and I paid the same price as bare root form DA.
Good tip about the USA website. I shall have a look there before I buy any more.
The DA roses do seem to behave differently in hot climates, either shoot up with lots of octopus canes, or don’t reach stated height, like Munstead Wood. But aren’t the usda climate zones to do with cold hardiness rather than heat tolerance, @Marlorena? Something that suits zone 11 but not zone 3 indicating that it is not cold tolerant, but not necessarily heat tolerant either. I have browsed the US site before, there was an article from one of their rosarians on best roses for southern states, but some of the ones he mentioned, like Lady of Shallot, I have, but the blooms fry in the heat! The Americans have developed a heat tolerance measure for plants too, but it’s not widely used yet...
They do have a good following in France and Belgium with plenty of accredited stockists.
The other one you're thinking of is the Sunset zones, which is mainly used in California.. it's a better measure of summer heat..
Also remember that DA roses are trialled in the U.S. in several places including two hot ones.. Farmers Branch Gardens in the Dallas/Fort Worth area of Texas … and Barona Casino Gardens in San Diego Southern California... although that's on the coast so may be cooler... but if they pass the test at Farmers Branch in very hot summers Dallas, you would think they would be alright where you are...?... but as always it's trial and error..
...there was another lady in Charleston who told Monty her roses are grown as 'annuals' because of all the fungus diseases... Monty said he hadn't heard that term used for roses before..
..Well, Monty... sorry to tell you but I've been growing roses as 'annuals' for years...
...most enjoyable series... I loved all the gardeners in this episode.. I thought some were a bit 'tubby'...? you don't see that over here so much with head gardeners...
https://www.gardenia.net/guide/plant-hardiness-heat-tolerance-and-climate-zones
These are stated for some individual roses, for example, Darcy Bussell:
https://www.gardenia.net/plant/rose-darcey-bussel-ausdecorum
DB didn’t do badly compared to others, didn’t fry as much, but as the heat zone mapping hasn’t (I don’t think) been done for Europe, yes it is still a guessing game. Be interesting to know of there is a source of the ones that passed the test in Texas...
Haven't watched last night’s Monty programme yet, looking forward to seeing it tonight. I recall he was pretty late in his gardening career getting into roses...