Many people have asked me how to keep avocado trees healthy. Many have come to me with their avocado problems. Many of their problems are due to improper watering. Uneven watering, overwatering, underwatering, can lead to big health issues in avocado trees. Today I show you how to water avocado trees so that you avoid root rot and other problems. I also discuss how to fertilise avocado trees, including how I use old aquarium water to help my avocado trees and other indoor plants thrive.