Preventing White, Fluffy Fungus on Seed Starting Soil

Many people enjoy starting their own seeds. Not only is it enjoyable, but it is economical as well. Because starting seeds indoor is so popular, many people can become frustrated if they run into problems. One common problem is the development of a white, fluffy fungus (some people may mistake it for a mold) on the top of the seed starting soil that can eventually kill a seedling. Letís take a look at how you can stop this fungus from ruining your indoor seed starting.
Stopping fungus from growing on seed starting soil

The number one reason that this white, fluffy fungus grows on your seed starting soil is due to high humidity. Most seed growing tips will suggest that you keep the humidity high over the soil until the seeds have fully germinated. Your seedling planter probably has a lid or cover that help with this or you cave covered your indoor seed starting container with plastic. Sometimes this raises the humidity to a level that is too high and which encourages the growth of this white, fluffy fungus.

Either prop open the lid of the seedling planter about an inch or poke some holes in the plastic over the container you are starting seeds indoor in. This will allow more air circulation and decrease the humidity some around the seed starting soil.
I have reduced the humidity around the seedling planter and the fungus still comes back

If you have taken steps to increase the air circulation around your seedling planter and have decreased the humidity around the seed starting soil and the fungus is still growing, you will need to take additional steps. Set up a small fan that can blow gently over your indoor seed starting setup. This will help to get the air moving, making it much harder for the fungus to grow.

Be careful though that you keep the fan at very low levels and only run the fan for a few hours each day. If the fan is running too high, this will damage your seedlings.

Starting seeds indoor does not need to be tricky. Now that you can keep the fungus off your soil, you can grow healthy seedlings for your garden.

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Gardening Know How
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Bedford, OH 44146