Treating Black Spot on Roses

I have noticed black spot on some of my roses. What do you suggest?
Thanks.

By maeref

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May 31, 20110 found this helpful
Best Answer

Try 1 cup of cornmeal to 1 quart of water. Set for one hour and spray roses.

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June 9, 20110 found this helpful
Best Answer

In rose care the best thing is a systemic feed that also has properties against black spot. After care, the best thing is a commercially produced and carefully applied fungicide labelled specifically for black spot.

Once you get rid of the black spot, be careful to avoid reintroducing conditions favourable to its development-don't water close to or after dark; keep the center of the plant open with proper pruning; space new bushes proper distances apart; and disinfect your pruning tools between cuts, not just plants.

Feed with one of the systemics to keep a beautiful and healthy plant.

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