42+ Brown Spots On Avocado Tree. It developed well, up until about a month ago, but then the second picture was taken today, three days later, showing the progression of the spots. They don't mind alkaline soil too much and they like the climate.
Don't throw away a avocado with a few brown spots.
The last leaf image is of a new leaf, which doesn't seem to have that problem. The leaves are large the most common disorder of avocados in texas is tip burn and marginal necrosis (browning on the spots can enlarge to ½ inch or more. They should be watered only during prolonged dry periods. They are just small brown spots but they have spread throughout the entire leaf, and there are two more which are nearly completely brown, and the sides are curling.