Starfish Cactus
Q.

starfish cactus

Zone Colorado City, Tx 79512 | sonnieb added on October 30, 2017 | Answered

My plant seems to have this white mildew looking stuff on the stems? What is it?

A.
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BushDoctor
Certified GKH Gardening Expert
Answered on October 30, 2017

Without seeing it, this sounds like powdery mildew. Neem oil will get rid of this, as will rosemary oil, or garlic extract. Mix one or more of these in water and spray the plant. You may spray the growing medium as well. Here is an article for more information on powdery mildew: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

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