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#1
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should I
remove all the black spot leaves before spraying them? On some of my
bushes there wouldn't be much left and I wondered if that would interfere with the stem development Rose B |
#2
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should I
wrote : remove all the black spot leaves before spraying them? On some of my bushes there wouldn't be much left and I wondered if that would interfere with the stem development I've read claims that so long as the leaves are still green enough to function, it just cripples the plant further to remove them. They're lost anyway once black spot has taken hold. Try to kill the spores and halt the progress with the spray, and remove the fallen leaves. Opinions? I vaguely recall having read that what I wrote above was confirmed by scientific studies. Now, for stems invaded by black spot, maybe removal would be the thing to do... Mark., been spraying with peroxide a lot to kill spores; seems to help so far but I can't say for sure |
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