Comments on: Avocado Leaves Turning Brown

By: Jamie Jamison Adams

Jamie Jamison Adams — Mon, 05 Oct 2009 13:47:21 +0000

It looks like your leaf has Cercospora leaf spot which can be treated with a basic copper sulfate spray. Usually avocados with this problem are sprayed beginning in May followed by a June and July spray and completed with a September spray.

By: Marta R.

Marta R. — Sun, 04 Oct 2009 15:04:24 +0000

"If the leaves start to get rust colored spots, you will have to treat it for leaf spot disease."

Hello. The attached picture shows the problem with my avocado tree. It is 3 months old and the brown spots attack oldest leaves first. With what the leaves should be treated? Thank you for answer in advance.

Attached Image: problem avocado.jpg

By: Julie W.

Julie W. — Mon, 24 Aug 2009 00:48:24 +0000

No, the soil does not seem powdery. When I stick my finger way down in the soil it feels like wet potting soil. It is not clay-like or sandy. I will try watering more often and see what happens with this new batch of leaves on top. Thank you.

By: Jamie Jamison Adams

Jamie Jamison Adams — Wed, 19 Aug 2009 14:50:12 +0000

I think you may need to water a little more often. Does the soil seem powdery when you stick your finger way down in it?

By: Julie W.

Julie W. — Wed, 19 Aug 2009 02:25:10 +0000

I have the same thing happening over and over. New leaves sprout and the old ones die off one by one. The leaf gets brown on the outside, curls under, and eventually dries up and drops off.

Could it be that I have a water softener and am watering it from that? I have been using water from my Britta lately but it is happening now again, even with the filtered water. I do water it once a week. I fill the sink, soak it, then let it drain well before putting it back on my window sill. It is planted in Miracle Grow potting soil. Should I add more sand perhaps? Soil change?

Thanks for any suggestions.