Lemongrass Plants
Q.

What is going on with my lemongrass?

Zone 34771 | noviceinnarnia added on July 31, 2018 | Answered

I went out to look at my lemongrass and water plants to find a ton of it with these white rain drop shaped spots surrounded by black. see photo for details. what is it and how do I fix it?

A.
A.Answers to this queston: Add Answer
BushDoctor
Certified GKH Gardening Expert
Answered on August 1, 2018

This is a type of rust that, typically, effects Bluegrass. This will be best controlled with dolomitic lime, and wettable sulfur, or instead you can use copper fungicides. I tend to lean towards the first option due to less toxicity, but the second option is stronger.

Although this is not the same rust species, it is very similar in how it spreads, and how it is controlled, so this article will help: https://www.gardeningknowhow.com/edible/herbs/lemongrass/brown-leaves-on-lemongrass.htm

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