At this time of the year, apple trees naturally shed excess fruit so don’t be alarmed if you see young apples falling to the ground. This is known as the ‘June drop’ and usually occurs at this time of the year when the tree sheds surplus fruit. It can also occur if the weather has been bad after flowering and/or there has been poor pollination of the fruit.
You can prevent this by pruning to allow plenty of light and air circulation into the rest of the tree. It can also be prevented by ensuring the tree is getting the right balance of nutrients. The plant will benefit from nitrogen, so add a well-balanced liquid fertiliser in later winter or early spring to boost before growing season. On the other hand, it’s important to not over feed the plants because too much nitrogen can lead to dropping fruit too.
A lack of water can also be a factor resulting in fruit dropping. So, ensure the tree is sufficiently watered and maintained. Watering and then mulching during the spring will help to retain moisture and decrease the likelihood of fruit falling.