uh, everyone I have a horrible confession to make. I had to emergency rescue 2 roses that are having a horrible time with Blackspot/almost complete defoliation... I am hoping that next year when I start fresh I will be able to combine DrammaticK (raw fish emulsion) as a foliar feed/blackspot buffer combined with Greencure and keep my roses in pots away from strangling tree roots.
My fault is that I planted these roses in full shade! shame on me! for the longest time Frederick Mistral held up without getting blackspot April, May, June until mid-July! when he finally caught blackspot from the other shade-growing rose and from the relentless rains we have been getting day after day after day.
I have used Both! Greencure and Serenade for an additional month on these roses when I noticed the first signs of infection. All roses have been given Greencure since April as a preventative. But it was a hopeless battle for the shade-growing ones! I also noticed that shade-growing kept rotting out my Frederick Mistral's new growth-- tiny buds would appear then dry up and blacken! As soon as I transferred him to a pot and stuck him in a sunny location his baby shoots finally! started to sprout everywhere.
Again, this was a very painful lesson that shade and heavy rains really cause intense blackspot infections. Now I have to resort to a high potency synthetic to cure both roses, Mancozeb. The only reason why I use it besides not letting my roses die (severe defoliation) is because it doesn't kill the honeybees from my online research. But it is pretty scary of a fungicide in that one has to wear goggles and gloves and breathing mask, this is definitely not a benign chemical by any means but better than the other synthetic options I had.
I am not! happy! but I am thinking that all I can do is keep trying to avoid synthetics as much as possible and to use it as a last resort.
A happier story is that my backyard roses are strong and thriving well. They get plenty of sun! and I have good insect guys (the spideys) to combat the yucky bad guy munchers. The hot pepper spray likewise provides just enough protection to keep my hybrid tea blooms lovely. I usually just hot pepper the blooms and rarely the leaves.
jean001
sergeantcuff
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