Answer: Your new avocado tree is reacting normally. The lower leaves die once they become old and are no longer useful; the new leaves take over their jobs. You can keep your avocado bushy and full by pinching out the very tip of the top of the plant. This will cause it to bush out and develop stems with lots of new leaves. If you intend to keep the plant in a container (they make great houseplants), you can pinch out the growing tip. If you intend to plant your avocado tree outdoors and want a tree rather than a bush, don't prune out the growing tip. Expect the stem to remain bare like the trunk of a tree, with growth only at the top or canopy of the tree. Good luck with your avocado tree.
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