mold on seedling pots

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merdle Lake Forest, IL Mar 10, 2011

What should I do about mold forming on the top of my seedling pots? I have them on heat mats and are covered with the plastic top. Do I need to start over? Merdle

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behillman Plantersville, TX(Zone 9a) Mar 10, 2011

Take the plastic top off.

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Ret_Sgt_Yates Sparta , TN(Zone 7a) Mar 10, 2011

Merdle,

Whether you are using humidity domes or placing plastic wrap right over the flats or pots, you need to air out the containers for half an hour to an hour once or twice a day. I've had seeds germinating under humidity domes for weeks and this airing-out procedure, especially if you use a small fan or open window (not on a freezing day!) for air circulation, keeps the mold from forming.

Planting your seeds into seed-starting mix, not potting soil (although things often turn out OK with potting soil too). Keep it moist but not too wet. If the surface starts to dry off during airing-out, moisten it with a plant mister before putting the cover back on.
If you follow these steps, you should not have any problems with mold or fungus.

I have used the hydrogen peroxide mix 10 parts water to 1 part peroxide to spray / water my seedlings many times and do not get mold issues. I would not start over at all , I hope this bit of information helps .

Best Regards & Happy Planting

Sarge

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merdle Lake Forest, IL Mar 10, 2011

Thanks, I will try that! m

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Ret_Sgt_Yates Sparta , TN(Zone 7a) Mar 11, 2011

no problem good luck , we are here to help if you need it and remember .


Sarge

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