mildew on soil in seed trays

rbraymondJanuary 18, 2011

Two days after I planted my tomato seeds in my seed trays, powdery mildew appears on some of the cells. I used clear covers over the trays with lamp lights for heat. I am leaving the covers off for now. What should I do about the mildew?

Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

It's not powdery mildew if this stuff is growing on the soil. PM only grows on plant tissues. A white substance on the surface of the potting medium could be algae, fungus, or soluble salts.

    Bookmark   January 26, 2011 at 11:35PM
Thank you for reporting this comment. Undo

First leave the covers off so the surface of the soil can dry out a bit. If it is warm enough outside put you trays outside in direct sunlight, the sunlight and breeze will help kill the fungus. If your plants are starting to keel over from damping off fungus try sprinkling ground cinnamon on them. If any place around you sells Pro-Mix with biofungicide use that for starting your plants. It has some kind of friendly bacteria in it that eats fungus. But get fresh stuff, the bacteria in one year old stuff will be dead.

    Bookmark   January 31, 2011 at 7:23PM
Thank you for reporting this comment. Undo

Thanks for your reply. This was the first time I experienced the fuzzy fungus on my see tray soils in 10 years. When I first discovered it I took the covers and gave it sun when the weather permitted. This took care of the problem.
This year I used MG seed starter mix instead of Jiffey. I will go back to Jiffey next year and if I continue to have this problem, I will try to find Pro-Mix with biofungicide.
Thank you for taking the time to answer with constructive comments.

    Bookmark   February 1, 2011 at 10:39AM
Sign Up to comment
More Discussions
Tomato Pests & Diseases
Home-grown tomatoes are a source of pride, a thing...
Yellow spots on leaves
Hi, I have several tomato plants that I started as...
Help Identify my Uncle's Tomato pest
Hi all, I'm writing in behalf of my uncle who is not...
Droopy Tomato leaves
Hi, I have noticed that my tomato leaves have started...
What's term for woven plants? Can tomatoes be woven?
In landscaping I've seen pictures of plants that are...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™