What is the White Mold Growing on my Indoor Plant Soil?

“We’ve got this gift of love, but love is like a precious plant. You can’t just accept it and leave it in the cupboard or just think it’s going to get on by itself. You’ve got to keep watering it. You’ve got to really look after it and nurture it.”

John Lennon

If you are new to being an indoor plant mom (or dad) like me, you may freak out when you see something “not normal” happening to your new plant babies. Well, recently I noticed a white, moldy looking film on the top of my large plant’s soil. I couldn’t help but panic a bit because it is a beautiful plant and it cost me $15!

So what else is there to do when you want to learn something? That’s right “Google it!” So I did. Here’s what I found out.

The white mold growing over the surface of houseplant potting soil is usually not harmful to the plant. This fungus is called saprophytic fungus.

The fungus is an indication that the soil is too moist. This could be due to over watering, poor drainage or an old contaminated potting soil.

Out of these options, I have come to the conclusion that it could be one of these two things:

1.) It may not be draining well, or

2.) The soil is old and contaminated.

I do need to repot this plant, as it is still in the same soil as when I bought it at the beginning of spring. However, since the growing season is coming to an end, it is recommended not to transplant/repot during the winter/non-growing season. This will now have to wait because I definitely do not want to kill this beauty.


How do I fix it?

According to one video (this one), the simplest thing to do is scrape the mold off with your finger. The other option could be to repot the plant in new soil. I am going to stick with simple on this one until next spring.

Bam! That was easy. See how I do it by joining us on Facebook @plantmomwannabe.

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