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Dragon Fruit Tree

Q.white spots that wipe off then reappear a few days later

Zone 19130 | larka13 added on June 8, 2019 | Answered

I have a dragon plant directly in line with my air conditioner/heat unit and
it keeps getting white spots that wipe off on the top of the leaves. What
is it and should I move the plant?

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on June 8, 2019

A/C units are notoriously bacteria and fungus ridden. This looks like either downy mildew in early stages, or powdery mildew.

Powdery mildew will be much easier to cure: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

Downy mildew can be a bit tougher: https://www.gardeningknowhow.com/plant-problems/disease/downy-mildew.htm

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