Mold on Seedlings - Knowledgebase Question

Roseville, MN
Question by bhoff
March 7, 1998
I have started some seedlings and, I'm assuming, are too moist as white mold is growing on the peat pots while green mold is growing on the soil surface. Am I watering them too much? Is it too humid? I have the peat pots in a plastic flat and water from the bottom. Also, is there any way to get rid of the mold now that it's started growing?


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Answer from NGA
March 7, 1998

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Yup, sounds like too much water to me! If you continue to water pot from the bottom, check them within about 15 minutes and pour off excess water from the tray. Otherwise, water plants from the top. If air circulation in the room is poor, place a small fan nearby to stir things up - it'll help reduce the humidity around the plants, and cut the risk of other moisture-related problems, such as damping off and root rot. Some seedlings don't like wet roots - I learned this personally while growing peppers on a capillary mat. They were stunted while everything else thrived. When I removed them from the mat, they started to grow like weeds!

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