Mold on Seedling grow medium

luigiwu · March 29, 2014

I see white powdery stuff on top of the grow medium on my seedlings - mold?

I think I'm over watering them (though always from the bottom.) And have just put a fan on them - hopefully not too late. So now how do I remedy the situation? I was told spray the 3% hydrogen peroxide that you get from the drugstore. Will it harm the seedling leaves? How often and how much do I spray?

My poor babies - first time growing from seeds and steep learning curve!
Thanks!
This is a kale seedling but the soil around my tomatoes also have this powdery stuff.

March 29, 2014	#1
luigiwu Tomatovillian™ Join Date: Jun 2013 Location: ny Posts: 1,219	Mold on Seedling grow medium I see white powdery stuff on top of the grow medium on my seedlings - mold? I think I'm over watering them (though always from the bottom.) And have just put a fan on them - hopefully not too late. So now how do I remedy the situation? I was told spray the 3% hydrogen peroxide that you get from the drugstore. Will it harm the seedling leaves? How often and how much do I spray? My poor babies - first time growing from seeds and steep learning curve! Thanks! This is a kale seedling but the soil around my tomatoes also have this powdery stuff. Last edited by luigiwu; March 29, 2014 at 08:39 PM.