roses buds turning brown - Knowledgebase Question

US
Question by mccoymomccoy
April 28, 2008
I have roses in containers. They look healthy except the buds are turning brown and look wilted.


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Answer from NGA
April 28, 2008

0

Your plants have the symptoms of a fungal disease called Botrytis. (Botrytis cinerea) This disease prevents the blooms from opening; buds turn brown and decay. Sometimes partially opened flowers are attacked and individual petals turn brown and shrivel. The fungus is always present in rainy seasons when the old blooms are not removed. Be sure to prune away any infected buds to halt the spread. It will also help to remove spent flowers on a regular basis. Fungicides will help control Botrytis. Apply according to label directions - weekly applications may be required during wet springs.

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