What Is This Growth on My Rose?

Anonymous added on July 14, 2016 | Answered

A fruit tumor growing on my rose bush flower stem. Can you please tell me what this is? Thanks Peter

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.
Answered on July 16, 2016

Hello Peter. Your rosebushes have been visited by what is called a Cynipid Wasp. Inside the gall is a tiny larvae that will hatch out into another Cynipid Wasp. Here is a link to an article I wrote about them, the galls can take on different forms but in roses the gall you have a photo of is the most common. Article Link:

Stan The Rose Man
Consulting Rosarian
Gardening Know How

Was this answer useful?
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.