Lime Trees

What Is Causing My Lime Tree Leaves to Turn Black added on July 12, 2012 | Answered

Some leaves are getting blackish or molding.

Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
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:

Was this answer useful?
Looking for more?
Here are more questions about Lime Trees

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

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