Q.My Avacado Tree I Have Grown From Seed Is Now Dying It Seems. The Root Has Black Dashes Going Up The Stem, The Leaves Are Getting
brown and black, and now some leaves appear to be eaten on. This will be its third summer and it has been lovely to grow on my back porch. What can I do to save it?

Certified GKH Gardening Expert
These articles should help:
https://www.gardeningknowhow.com/edible/fruits/avocado/avocado-pests-and-diseases.htm
https://www.gardeningknowhow.com/edible/fruits/avocado/what-causes-avocado-leaf-burn.htm
https://www.gardeningknowhow.com/edible/fruits/avocado/treating-avocados-with-root-rot.htm
https://www.gardeningknowhow.com/edible/fruits/avocado/indoor-avocado-plant-care.htm
https://www.gardeningknowhow.com/edible/fruits/avocado/repotting-an-avocado.htm