Clivia is a genus of plants belonging to the lily family that are famous and desired for their luxurious blooms and deep green glossy foliage. They are winter blooming, thrive in filtered light or shade conditions and moist rich soil. The flowers range in hue from creamy white to pale yellow to deep coral and orange and grow atop a slim smooth stem. They are hardy only in USDA zones 9 and 10 and can be grown indoors in cooler climes.
Place your clivia in a growing location where it will receive bright indirect sunlight or filtered direct sunlight. Low light conditions will inhibit bloom. Provide regular ambient temperatures in the indoor household range of between 65 and 78 degrees Fahrenheit.
Plant your clivia in nutrient rich soil that has been amended with several pounds of compost and or well aged manure. Established plantings can be top dressed with these ingredients once a year.
Water your clivia consistently throughout the year to maintain lightly moist but not wet planting soil. Allow the surface soil to become dry to the touch between waterings.
Feed your clivia once a month, except during the rest period in winter, with a water-soluble balanced plant fertilizer. Dilute the fertilizer formula with water and apply at 50 percent of the recommended strength around the base of the plant. Do not pour fertilizer over the foliage as this can lead to spotting and damage.
Mulch around the base of your clivia with cocoa bean hulls, shredded bark or compost to feed the soil and prevent moisture loss.
Prepare the plant for bloom by allowing a four to six week cool set interval in November and December. Expose the plants to cooler overnight temperatures between 36 and 50 degrees Fahrenheit. After the cool set period, scale back on watering to just keep the foliage from wilt and stop feeding until a flower stalk begins to form. Immediately resume watering and feeding.
Deadhead clivia blooms when the flowers fade by cutting the stalk off at the crown of the plant. Alternatively, leave the spent flower stalks in place to produce decorative red seed berries. When the berries ripen and disburse their seed, you can cut the stalk off at the crown.