Botanical Name: Pilea cadierei
Showy, silver-splashed leaves make Aluminum Plant a stunning and popular house plant. It's easy to grow, too, as long as you can meet its need for humidity.
Pilea cadierei is a fast-growing perennial plant. It spreads rapidly in its tropical native habitat, where it grows as a groundcover. Tiny, light-colored flowers sometimes appear in summer. Don't be afraid to pinch them off. They're insignificant compared to the foliage.
Its ovate green leaves are about 3 in (8 cm) long. Silvery streaks mark each leaf, adding a dramatic metallic design to its quilted texture. These unusual patterns give this plant another common name, watermelon plant.
Pinch off growing tips to keep the plant from getting leggy. Pinch the fleshy stems early and often to encourage them to branch out and to stay compact. Don't toss out those cuttings, either. They'll root easily.
Aluminum plant prefers humidity to wet soil. In fact, it won't tolerate soggy soil which causes root rot. Aim to keep the soil lightly moist during the growing season.
Older stems will drop its lower leaves. This is normal. Cut back older stems in spring when they become leggy. If your plant drops quite a few leaves, it's likely caused by overwatering. Move the plant to a warmer spot and stop watering until the soil dries out a bit. If you believe you've hopelessly overwatered, repot at once in fresh soil.
Repot in spring when it outgrows its pot. Use a pot with a hole to provide good drainage.
You'll find this tropical native for sale at nurseries and online in spring and summer. Look for the botanical name Pilea cadierei to be sure you're getting this plant.
Pinch off the growing tips to keep this beautiful plant compact. It makes an ideal dish garden or terrarium plant.
Height: Up to 12 in (30 cm)
Light: Bright light. The foliage will lose its variegation if the light level is too low. It's a good idea to place it in bright, filtered sunlight year-round.
Water: Keep soil lightly moist spring through fall, slightly drier in winter.
Humidity: Moderate to high humidity. To raise humidity, place the plant on a tray of wet pebbles. This plant also loves to be misted with room-temperature water. It makes an ideal terrarium plant.
Temperature: Average room temperatures 60-75°F/16-24°C
Soil: Any good potting mix
Fertilizer: Feed every 2 weeks in spring and summer with a balanced liquid fertilizer diluted by half.
Propagation: Take 3 in (7.5 cm) stem tip cuttings in spring or summer. Cut the stem just below a node -- the place where a leaf is attached. Place the cut end in moist potting mix and cover the plant with a plastic bag to retain humidity. Cuttings root easily in a month.
Overwatering will cause leaves to wilt or fall off.
Use a pot with drainage holes and allow soil to dry out a little between waterings. Keep slightly drier in winter.
Pilea is a member of the Urticaceae family, which includes such unlikely relatives as Stinging Nettle and tiny-leaved Baby's Tears.