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Shanna from Plymouth writes

Why does the top of my soil mold when using Bonide Systemic Houseplant Insect Control Granules?

When I use Bonide Systemic Granules Insect Control for the tiny flies around my plants my plant soil molds. Has anyone else had this happen or know why this might be happening.


We have not heard of this issue when using Bonide Systemic Granules Insect Control.  Mold is a moisture issue, and in the soil it would be more like some type of algae typically. The granules also could be on a clay type material carrier, so sometimes that will not break down fully and can leave a white "moldy" look on the surface. We recommend you reach out to the manufacturer to see if they have some more insight.
Bonide- (315) 736-8231

Answer last updated on: 06/25/2021

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