Buy a healthy tree that is two to three years old.
Plant the tree outdoors in USDA hardiness zones 8 to 11 or grow them in pots outside and bring them indoors during colder months in colder zones.
Wash away any non-soil medium from a tree's root ball before planting it. Set an outdoor tree in a hole that adequately accommodates its roots, fill the hole halfway, water to settle the soil around the lower roots, and then backfill completely.
Fertilizer an established outdoor tree with a slow-release, nitrogen-rich fertilizer. Apply an evenly balanced fertilizer to a container tree in the spring and early summer.
Buy peat moss-based growing mix or another sandy, well-drained soil for a container tree. Use a 10- to 15-gallon container with drainage holes.
Cover the container bottom with a gravel layer. Place the tree in the container so that the added soil barely covers the root ball top.
Set the potted tree in a window that receives full sun, or install a 40-watt fluorescent light to ensure the tree receives eight to 12 hours of light each day.
Water outdoor trees about two to three times each week for a total of 5 gallons per week during the summer. Water a container tree about the same amount during the spring, and nearly every day during the summer. Ensure that soil around either an outdoor or potted tree remains slightly moist to dry, but not parched and cracked.
Pollinate a potted tree that always remains indoors by transferring flower pollen with a cotton swab or paint brush.
Pick all of the ripe Meyer lemons that have no green on the rinds. Harvest from the lower branches first.
Prune the potted tree with pruners by removing suckers from the trunk base. Also remove diseased and damaged stems and any weak stems that are as thin as or thinner than a pencil. Cut branches within the tree that are crossing over each other and prohibiting air flow and sunlight from reaching the area.
Thin young fruit clusters to one fruit in the spring when they are no larger than golf ball sized. Ensure each fruit is at least 6 inches away from the others.
Move the potted tree to a sunny but protected spot outside during warm days in the spring, summer and fall, when the low temperatures reach above 40 degrees F.
Replace nutrient-depleted potted soil after three or four years. Keep the tree in the same pot and allow it to become root-bound to control its growth.