Black Spots on Underside of Avocado Leaves?

So my three year old avocado plants have been through thick and thin, but at the minute they're developing small dark spots on the underside of their leaves, only visible from below, near the veins of the leaves. They've also been quite dry and have had a bad run at growing new leaves, most of them curling up.


I've cut off some of the worst leaves, but don't know where to go next. I imagine its some kind of fungal infection.


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March 31, 20200 found this helpful
Best Answer

avocados do well in a California temperate climate zone that does not get overly cold in winter, is not overly humid in summer but rains in the winter months. Also very sunny

Being grown inside can make it susceptible to all sorts of fungi and diseases. A liquid copper fungicide can be a great cure, such as this

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March 25, 20200 found this helpful

I live in the tropics and plants like this grow best outside. A few years back we did have a fungus that attacked our avocado trees. it took one growing season for the trees to repair themselves and heal. the leaves I see on your tree look very similar to what happened here. Lucky for us the rain washed the fungus off the leaves of the trees and allowed them to grow again. I would like you to read these instructions on how to grow these trees in your home.

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