Houseplant Problems
Q.

what causes white dusty spots on the top of my plant leaves

simpleman added on January 13, 2011 | Answered

this is a indoor garden

A.
A.Answers to this queston: Add Answer
Heather
Certified GKH Gardening Expert
Answered on January 14, 2011

It could be water spots. If you water from above the plants, the water on the leaves can dry and leave a dusty residue which is the minerals in the water.

If the spots are more fuzzy like cotton, it could be mealybugs. This article will help you with those: https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm

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