Carnation, botanical name of Dianthus caryophyllus, is a freely-blooming perennial plant usually grown as an annual.Lighting:
Bright, indirect light or direct sunlight, but shade from midday sun. Can be grown outdoors in a partially shaded area.
Cool house temperatures: maximum temperature is 85ºF. Ideal temperatures are 50ºF to 65ºF for prolonging the blooming period. During times of warmer temperatures, give extra humidity by frequent misting or by placing the pot on a tray of moist pebbles. Provide fresh air on hot days.
Water plentifully to keep the soil evenly moist, never allowing it to dry out completely. Do not allow plants to sit in water.
Keep away from high temperatures which can cause flower bud failure. Pinch off spent blossoms to encourage blooming. Feed monthly with a flowering houseplant fertilizer from March through September.