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Posted 1M ago by @pricklypups

Powdery mildew help!

Hi friends,
Unfortunately for the last few weeks I’ve had a few plants who have gotten powdery mildew. I’ve been treating my burro’s tail with neem oil, but she looks pretty bad and seems to be getting worse. It’s one of my favorite plants and was thriving prior to this (minus needing a bigger pot)

How can I save her? Should I chop and replant? Keep treating with neem?
#SucculentLove #SucculentSquad
3” pot with drainage
Last watered 3 weeks ago
Best Answer
Yeah, neem oil won't do anything for powdery mildew. You need an antifungal copper spray, or sulfur powder to treat it. Powdery mildew also spreads to other plants very easily, so I'd definitely isolate it.
@stephonicle thank you! I’m going to buy some ASAP. Do you think I should treat with the copper spray and then cut and repot? I’m so nervous it’s not going to pull through
@pricklypups if it were me, after treating with copper spray I'd go ahead and cut off the healthy parts and repot them. Then you can leave the more damaged parts of the plant and see if they manage to pull through. If not, at least you didn't lose the entire plant. PM wiped out about half of my succulent collection a few years ago. I ended up moving most of the survivors outside, where I treated with sulphur powder and wished them the best lol. Although most were left with some gnarly scars from the PM and then declined even further due to the sulphur powder, they eventually bounced back AND I didn't lose more plants.

By the way, one way to help prevent PM in the future is ensuring there's excellent airflow around your plants. You can get a bunch of little cheap stroller fans and position them on opposite sides of the plants facing each other to create good cross ventilation. But if you ever notice PM pop up again, shut off all the fans. They'll blow spores around and cause PM to spread to other plants even faster.