Drastic Temperature Changes A second reason your Lemons are falling off the tree is a.

When Meyer lemons self-thin, it's often referred to as June drop, since it usually occurs around May, June or July.

Any of these conditions may cause the Meyer lemon to drop fruit prematurely.

Since too much fruit will cause fruits to be small and may even damage the tree. Dry climates, excessive wind or dry air if the lemon tree is indoors saps moisture away from the leaves which causes the leaves to drop.

Intense heat in a green house, next to a source of heat or due to weather conditions can increase the rate at which the soil dries and can deprive the lemon tree of moisture, causing leaf stumpcutting.barted Reading Time: 15 mins.