Soil in potted avocado all white and 'rotted', mold?
I have a potted avocado tree, about 7 years old. Here in San Diego, it usually dies off a bit during the winter, drops some leaves, and then comes back in the spring.
I noticed that this year it was still looking pretty bad. I dug around in the soil and was shocked to see all kinds of white material in there. It had been normal potting mixture before, now it looks like a mixture of chalk and thinly shredded cardboard. Looks really bad, no wonder the avocado isn't doing too well.
Obviously I need to repot it in better soil, but does anyone have any idea what is going on here? Last place we live there was a lot of verticillium or some kind of wilt in the soil, got all the in-ground tomatoes eventually. But it didn't do that to the soil!
Thanks for any insights.