By nature, citrus trees are subtropical to tropical and prefer warmer climates. They do not tolerate frost and will grow well in desert regions. Citrus trees include the lemon, grapefruit, orange, tangerine, tangelo, kumquat and lime. They need deep soil that provides good surface drainage and substantial internal drainage, enabling the water to percolate downward. When obtaining a container citrus tree from a local nursery, the tree can typically be planted year-round, yet the ideal planting time can vary by region.
Remove lawn or foliage growing on the site where you intend to plant the citrus tree. There should be a bare circle over the site, approximately 5 feet in diameter.
Dig a hole using a perennial spade or shovel. Make the hole wider by half than the tree's root ball. The depth should be the same as the depth of the root ball, but if planting in a lawn area, it should be 1 inch less.
Remove the citrus tree from its container and gently rinse off about an inch of the growing medium from the entire root ball.
Place the tree in the hole and backfill until half full.
Water the hole thoroughly and allow the water to settle.
Fill in the rest of the hole, gently tapping down the soil.
Form a water ring around the tree using excess soil from the hole or soil from another location in the garden. It should be about 6 inches high and 7 inches thick, and wider than the original hole.
Fill the water ring with water. Add more soil to the hole after the water drains and soil settles, if necessary.