Sharing my experience with growing avocados in containers. I have trees going on their third year as well as some that are on their second and first. I follow Gary Matsuoka's protocol from Laguna Hills Nursery that you can see here    • Growing Avocado Trees  .

I have found avocados easy to grow if they are in proper soil. I do not know how long they will do well in pots, and I will be allowing several of them to fruit this year as well.