Do you think it's because of the amount of human intervention with making new varieties? Because I was just thinking, we had lots of roses when I was a child, they never got fed, and watering was done by dad, which involved spraying the entire garden at any time of day, by making it a big game for us kids, so everything got soaked and there was never any issues. 🤔
@Slow-worm black spot apparently became much more prevalent following the clean air act and the consequent reduction of sulphur (a rose fungicide) in the air. Burning coal and the resulting sulphurous smog meant it was largely unheard of in our parent’s/grandparent’s time - depending on how old you are 😃
I guess it might also be true that not much knowledge of or attention paid to disease resistance during the early hybridisation phase, then there was the fad for breeding for fast repeat flowering/long-lasting florists roses at the expense of fragrance.. now we want it all and breeders are trying their best to give it to us. Now if only they can breed a pest resistant rose that would really be something!
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
Not only has black spot started, but I've found the fist signs of sawfly today. Just wondering whether to try to make up the garlic spray someone mentioned last year, if I can remember how 🤔
Roses that are fed and watered well tend to suffer less from diseases. Maybe it's been too dry. But I know that you have a lovely garden @Yviestevie so it can't be that. Fungus spores float in the air, some years are worse than others. Amazing to think that earlier this year there was dirty rain carrying sand all the way from Africa!
Why are you apologising for intruding? Intruding where? You are a regular poster on this Forum.
Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
Glad you posted @Yviestevie. My roses are still very young and I am tending them like a mother hen but pulled off some leaves with blackspot today. Glad I am not alone - you know what it's like when you are a new mum.
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I guess it might also be true that not much knowledge of or attention paid to disease resistance during the early hybridisation phase, then there was the fad for breeding for fast repeat flowering/long-lasting florists roses at the expense of fragrance.. now we want it all and breeders are trying their best to give it to us. Now if only they can breed a pest resistant rose that would really be something!
Just wondering whether to try to make up the garlic spray someone mentioned last year, if I can remember how 🤔
Why are you apologising for intruding? Intruding where? You are a regular poster on this Forum.