Too much fruit puts a strain on the tree.
Uneven watering can cause your Lemons to fall off the tree (as well as flowers).
Trees need regular watering. They don't take well to drought and low humidity. One may also ask, why are my baby lemons turning yellow and falling off?
Baby lemons turning yellow and dropping. This is normal and is known as post bloom fruit drop. I too have a little Meyer Lemon tree, a I am just amazed at it, It's just a little thing, and I've had it going on 3 years now. It has one huge lemon that seems like it must be a year old and almost ripe, then another about golf ball size and I see a baby about pea size on there now.
It never had noticeable dropping of baby lemons. Dec 10, 1 Why Are Baby Meyer Lemons Dying? 2 Why Do the Fruits Fall Off the Citrus Trees? 3 Lemon Tree Insects & Parasites; 4 Black Pests on Citrus Leaves. Jul 08, Re: Lemon has baby lemons turning yellow and falling off. Actually if your plant was grown from seed it is still young since citrus trees from seed take around 5 years to mature before they bear fruit. Meyers are pretty prolific and will have up to three cycles in a year.
May 02, As for your lemons falling off, only a small percentage of the flowers will set fruit, and even after the initial fruit set, the tree will drop the fruit that it cannot support (often called the June drop).