Roses

Rose Black Spot


Anonymous added on June 21, 2015 | Answered

Two large off-white roses bushes, I planted from pots bought from garden centre 3 weeks ago. They have black spot on some leaves, but the flowers have gone droopy and misshapen and now dropped most petals. Is this fungus as well? They had spots on them too, pink or brown, not black. My wife said it was black spot when I got these.


Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
ANSWERS
roseman
Answered on June 24, 2015

It sounds like you have both a fungus and insect problem. I would apply some Bayer Tree and Shrub granules around each of the roses as directed on the label. Then spray the rosebushes with a good fungicide that is listed to control black spot. If the black spot is in heavy attack mode, you may want to get a fungicide called Mancozeb at http://www.rosemania.com and spray the roses with it at least three times 5 to 7 days apart. It will leave a yellowish residue on the foliage, but that is how it works. Also, the black spots will not go away once they appear on the foliage, however the new foliage should be clean of it if the spraying has been successful.

Was this answer useful?
00
Looking for more?
Here are more questions about Roses

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.