Asiatic lilies (lilium) grow well in Georgia and are available in every hue except for blue. Asiatic lilies grow from bulbs and should be planted in the autumn in Georgia. Every three years or when the lilies seem to bloom less frequently, gardeners should dig up and divide lily bulbs to promote plant health. Gardeners should choose Asiatic lily cultivars that perform well in USDA hardiness zones 7a to 8b--Georgia's hardiness range--and note that some Asiatic lilies are designed for colder climates and won't perform well in Georgia.
Dig a long trench in your garden bed to plant Asiatic lily bulbs. Plant small bulbs no more than 4 inches deep and large ones no more than 6 inches deep, leaving 8 to 12 inches between lily bulbs. Place the bulbs in the trench so the point end sticks up toward the sky, then cover bulbs over with dirt.
Water your planted lily bulbs so the soil becomes moist but not saturated.
Mulch over the area in late fall with a 3- to 4-inch layer of pine straw or mulch. This helps insulate the bulbs against winter's temperature fluctuations and can protect bulbs when Georgia experiences periodic frosts.
Remove the mulch in the spring so your bulbs can emerge.
Fertilize the Asiatic lily bed using a 5-10-10 fertilizer. Scatter the fertilizer around the base of the soil and water the bed to work it into the soil. Follow the dosage range on your package of fertilizer.
Water the developing lilies so the soil becomes moist but not saturated. Allow the soil to dry out, then water again. In Georgia, Asiatic lilies bloom from May to September.
Deadhead spent blooms on your lilies to promote more blooming. Pluck off the withered flower by pinching it with your fingers.
Trim lily plants down in the late fall, leaving only 2 to 4 inches of plant stalk.