Lemon trees are big, beautiful trees that produce a large amount of fruit throughout the summer season. Many trees are pruned to a smaller size than their natural growth for convenient harvesting, but the tree produces high-quantity and quality fruit if allowed to fulfill its natural size.

...
Lemon trees can grow 20 feet tall.

Height

True lemon trees reach 10 to 20 feet in height and usually have twiggy-thorny branches. Different varieties of lemon trees grow to considerably different heights. The Ponderosa lemon is a considerably smaller than a true lemon tree and has larger, seedy fruit. Meyer lemon trees are suitable trees for containers and usually grow to 6 feet tall.

Growth

Lemon trees are known to produce well in poor soil. California lemon trees are usually planted in clay-loam soils that hold water. Lemon trees produce fruit in two to three years. The tree will continue to produce lemons for up to 30 years. Pruning is not recommended unless absolutely necessary. Prune to discard broken, weak or sucker branches, allowing the tree to take its natural shape.

Pests

Asian citrus leaf-miner is usually not discussed as a pest to citrus trees because it is relatively new. The leaf-miner attacks the new growth, leaving new foliage and fruit distorted and unusable. There are few pests that can actually stunt or kill the tree. If the tree has an insect infestation, try to bring in a natural predator of that bug. If spraying is the only option, find an organic insecticide that is safe to use on fruit trees. Follow directions according to the package.