Avocado tree problems
i recently bought a house, and it has a large mature avocado tree in the back yard. the leaves are all browning from the tip up. i've tried to look it up, but all i ever see is that it's either root rot or salt burn. i haven't really found how to fix either (or if they're fixable), and how to figure out which it is. there also spots on the underside of the leaves. i'll link to a couple of pictures showing what i mean. any help would be greatly appreciated. thanks.