Students for Stewardship The Cork Board
← Back to the library

Aluminum plant

Pilea cadierei (py-LEE-uh kad-ee-AIR-ey)

Family: Urticaceae Non-native Herbaceous (1-3 ft)

A tropical plant that can be grown indoors in a warm, humid environment in bright indirect light, avoiding full sun, using a peaty soil-based potting mix. This plant does best in high humidity and will appreciate humidified rooms or placement on a bed of wet pebbles. Water moderately in the growing season, and reduce watering in fall to late winter. Pinch stem tips to keep plant compact. The best foliage is on new plants, therefore, some replace plants each year by taking cuttings in early spring to start new plants. The common name, aluminum plant, comes from the foliage looking like it has been splashed with aluminum paint. This upright, herbaceous perennial is noted for its textured green and silver foliage. It typically grows in a shrubby clump to 12” tall. Elliptic to obovate, toothed, dark green leaves, with each leaf having four rows of upraised silver patches. Leaf appearance gives rise to an additional common name of watermelon pilea. Use this plant as a house plant or in a greenhouse. Quick ID Hints: upright, clumping, evergreen herbaceous perennial, grows from 6 to 12 inches tall elliptic to obovate, 2 to 4 inches long, serrate margins, shiny, dark green leaves with four rows of silver patches tiny green cymes but rarely flowers as a houseplant Insects, Diseases, and Other Plant Problems: Monitor for mealybugs, scale, aphids, and spider mites. Overwatering or poor drainage will commonly cause root rot. In high humidity or poor circulation, powdery mildew can occur.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 46 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Often confused with Peperomia argyraea

Full plant profile

Growing Conditions
Plant type
Herbaceous Perennial; Houseplant; Perennial
Life cycle
Perennial
USDA zones
11a, 11b, 12a, 12b
Light
Dappled Sunlight (Shade through upper canopy all day) | Deep shade (Less than 2 hours to no direct sunlight)
Soil texture
Loam (Silt)
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
Less than 12 inches
Mature size
Height: 0 ft. 9 in. - 1 ft. 0 in. | Width: 0 ft. 6 in. - 0 ft. 9 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Dense; Erect; Spreading
Leaf color
Gray/Silver; Green; Variegated
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Elliptical; Obovate
Leaf margin
Serrate
Leaf feel
Glossy
Leaf value
Showy
Leaf size
1-3 inches long
Hairs present
No
Leaf detail
Elliptic to obovate, toothed, dark green leaves, each having four rows of upraised silver patches.
Flower color
Gray/Silver; Green; Insignificant; Pink; White
Flower form
Cyme
Flower size
< 1 inch
Flower detail
Non-showy/Insignificant
Bloom time
Summer
Stem color
Green
Stem detail
The stem is green and of medium thickness.
Wildlife & Ecology
Native status
Non-native
Origin
China and Vietnam
Distribution
Introduced: Bangladesh, Brazil, Costa Rica, Cuba, Dominican Republic, El Salvador, Fiji, Guatemala, Haiti, Hawaii, Honduras, Mexico, Trinidad-Tobago, and Venezuelan Antilles
Landscape Use
Landscape location
Container; Hanging Baskets; Houseplants; Patio
Garden tags
#houseplant #poisonous #colorful #potted #evergreen #showy leaves #non-toxic for cats #non-toxic for horses #non-toxic for dogs #tropical feel #variegated #terrarium
Problems & Resistance
Insect problems
Mealybugs Found on Flowers and Foliage
Propagation
Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.