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Old 02-12-2012, 09:47 AM
 
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I have a few indoor plants that are doing well, but I'm noticing some mold on the dirt. Is there a way to get rid of this without hurting the plant?

Thanks!
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Old 02-12-2012, 10:47 AM
 
Location: Chicago
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What color is it? If it is white or green (algae) just scrape it off and try to let the soil dry a little bit more between watering as excess moisture tends to breed more mold. Does the pot have a drainage hole?

Yellow tends to indicate saprophytic soil fungus from dead or decaying matter in the soil. This again is exacerbated by over-watering/poor drainage. If you water less often and let the soil dry out and the problem continues, re-pot in fresh/sterile potting soil.

Another possibility, especially if they haven't been re-potted in awhile and you live in an area with hard water, could be mineral deposits from tap water. Look for crusty white and yellow/brown streaks around the lip of the pot and the drainage hole. If the deposits are mainly white it could also be fertilizer deposits from over-fertilizing with a chemical based plant food.

Unless you have fungal gnats as well, the problem should be fairly easy to fix, as it is mostly likely related to over-watering/poor drainage.
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Old 02-12-2012, 04:07 PM
 
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Thank you! It's the grey fuzzy type but the soil is moist (and new out of the bag) so I'm guessing I have watered too much.
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Old 02-12-2012, 05:03 PM
 
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h2o2- hydrogen peroxide is known to be antifungal and kills mold. I have read that you can use it with plants. Add it to the water and you will give the plant extra oxygen and kill mold. look it up online you will find info.
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Old 02-12-2012, 11:20 PM
 
Location: County Mayo Descendant
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Quote:
Originally Posted by truserenity View Post
h2o2- hydrogen peroxide is known to be antifungal and kills mold. I have read that you can use it with plants. Add it to the water and you will give the plant extra oxygen and kill mold. look it up online you will find info.
Yes.

Try mixing a little sand in the dirt also
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Old 02-13-2012, 06:17 AM
 
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Thanks to both of you! I will try the H2O2 and some sand.
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Old 02-13-2012, 11:24 AM
 
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Change your soil. Over the years, I have learned about the merits of porous, well-draining mediums. You rarely get this out of a bag.

I make mixes consisting of peat moss, small wood chips, perlite, and granite chips. This allows water to drain away rather than create a big lump of moist sludge that invites mold. The roots can breath and thus flourish.
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Old 02-13-2012, 12:44 PM
 
Location: Yellow cottage, green doors.
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Your biggest problem is likely to be air circulation. That should do a lot to correct the problem.

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