Ask the Expert: What is wrong with my avocado tree? The little thing is a year old. It did not get much sun at all this winter but now it has full southern exposure and plenty of light. I keep it inside and ensure it's nice and warm. When new leaves sprout from the top the older larger leaves turn brown and fall off the bottom. I have tried giving it plenty of water and I've tried to dry it out. I've tried a little water each day but still can't stop what's happening to it. Dianne Plant Expert Reply: It looks like you have a water stress issue. Instead of a little water each day, water it thoroughly and when the soil starts to dry out water it thoroughly again. At some point you will need to water it with a very diluted solution of water soluble fertilizer. I would remove the brown leaf. Do watch for leaf spot. If the leaves start to get rust colored spots, you will have to treat it for leaf spot disease. Try to give it as much light as [...]