Pruning
The size and shape of your citrus trees will depend on the cuts you've made in the past, which will also determine the tree's future growth. To effectively prune your citrus trees, first, you'll need to locate the tree's main trunk starting from the ground and lateral branches. Remove any dry branches, twigs, leaves, suckers, or water sprouts. Try to create an open center and balanced, symmetrical canopy.
You could also "Top" the plant. This is when you cut the main trunk of the plant early on to promote lateral growth instead of vertical growth. This is advantageous for fruit production because it will often provide larger yields.
Harvesting
To harvest the fruits of your labor, use pruning shears or sharp scissors to cut the stem close to the fruit, leaving a small piece of stem attached. Avoid pulling or twisting the fruit, as this can damage the fruit or the tree. Harvest when the fruit is at its peak ripeness, indicated by color and a slight softness to the touch. Most citrus trees produce spring flower blossoms in the late spring, and fruits are ripe in the winter and can stay on the tree into the following spring. Store citrus in a cool, dry place. Some varieties require refrigeration, while others do not.