Alocasia, commonly known as elephant's ear, is a striking tropical plant that needs warm, humid conditions, and is usually grown as a houseplant. It is prized for its large heart-shaped or arrow-shaped leaves and the foliage of some varieties has prominent veins or variegation. In the summer, alocasia grows quickly, producing a new leaf every week.
Most Alocasias thrive in bright and indirect light or partial shade outdoors, which prevents their leaves from scorching. The light intensity and length depend on the species or cultivar. Some large varieties tolerate full direct sunlight, and their leaf color tends to be more defined.
Generally, a location in or near a window with an eastern or western exposure offers the filtered light many species require. Some alocasia will tolerate a shadier spot in your home, but the leaf growth might be slower and less impressive.
Plant alocasia in a loose, well-drained potting mix. The soil should be slightly acidic, with a pH between 5.5 and 6.5. Use a standard all-purpose peat-based potting mix or special potting mix for aroids. If necessary, improve the soil drainage by amending the mix with orchid bark or perlite.
Alocasias are water-loving plants but allow the top few inches of soil to become nearly dry before watering. This will help keep the soil evenly moist. Soggy soil makes the plant susceptible to fungal infections and root rot.
They require less water during the winter months when the plant is dormant. Alocasia does not tolerate temperatures below 60°F and requires very humid environments. To raise the humidity around your plant, place it on a pebble tray and add water until it rises to just below the pebble surface. Keep the plant away from cold drafts from windows, doors, and air conditioning.
Especially larger specimens are heavy feeders. During the growing season, use a balanced houseplant fertilizer, such as 20-20-20, either in liquid form diluted to half-strength, once or twice a month, or in granular slow-release form every six weeks to two months. Stop feeding your alocasia during its dormant phase in the winter.
