What's your question? Ask

Hyacinth Plant

Q.Powdery mildew?

Zone Zone 9 | Anonymous added on September 3, 2018 | Answered

Could you confirm this is powdery mildew? Ör is it something else?
1. Zinnia
2. Pumpkin
3. Aubergine

A.Answers to this queston: Add Answer
Answered on September 3, 2018

Yes, this looks like powdery mildew. Zinnias and melons/pumpkin are notorious for powdery mildew susceptibility. With zinnias, it is important to not crowd the plants; they need space in between plants for air to circulate. This lessens the risk of disease and makes it less likely to jump from one plant to another. Watering from above puts plants at risk so drip irrigation or soaker hoses are ideal. Keep moisture levels consistent. At this point, remove severely affected leaves. At the end of the season, remove all plant debris as PM can overwinter in the soil. Rotate crops so those not as susceptible to PM are put in where infection was a problem the previous year. The same is true for zinnias. Here is a good article: http://ipm.ucanr.edu/PMG/PESTNOTES/pn7406.html

Was this answer useful?

Log in or sign up to help answer this question.

Did you find this helpful? Share it with your friends!

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

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

Looking for more?
here are more questions about...
Hyacinth Plant
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert