I started growing an avocado tree from the seed of a haas avocado a few years ago. I sort of just left it alone and watered it when it needed to be watered. It got really tall with no branches because I never pruned it. I’m thinking about throwing it out because I think it has pests on it. I don’t do much with plants so I don’t know if they are bad or harmful. Help would be appreciated! Thanks.