Lime Trees
Q.

what is causing my lime tree leaves to turn black

connieharmon2009@yahoo.com added on July 12, 2012 | Answered

Some leaves are getting blackish or molding.

A.
A.Answers to this queston: Add Answer
Nikki
Certified GKH Gardening Expert
Answered on July 13, 2012

It's called sooty mold and is common on citrus trees. While unsightly, it's usually harmless. The mold grows on the sweet honeydew from sap-sucking insects like aphids, scale bugs, etc. You'll first need to treat the offending insect pest (hosing off plant and using garlic spray, insecticidal soap, or horticultural oil). We prefer neem oil, which is safe and effective. As a bonus, neem oil also make a great fungicide, so it will usually take care of both issues.

Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

00
Was this answer useful?

Log in or sign up to help answer this question.
Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Lime Trees
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More