Why Are My Avocados Leaves Midribs Turning Black?

Question

My avocado plant is 1.5 years old. About one week ago i found that midrib of one leave was turning black. Today there are 3 leaves with black midrib,this black places become larger in size. Also there are little brown dots. Also i want to know should i clean leaves, if yes,how? Also there are spring tails in the soil and i dont know how to kill them. Please help me, i want to save my avocado plant. Thanks

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Answer 1

Springtails won't, typically, cause any harm at all. They are beneficial to the soil.

Speaking of soil... I don't see a picture of it. The damage would indicate overwatering, but this kind of damage can occur from overfertilization, as well.

These articles will help:

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm

Here is an article that will help you with the general care of the tree in container:

https://www.gardeningknowhow.com/edible/fruits/avocado/indoor-avocado-plant-care.htm

As far as spraying the leaves- I mist my indoor trees with water, or water with just a bit of aspirin in it. I do this once or twice per week, but you can do this more often if you would like.