Shell Ginger – Desert Horizon Nursery

Shell Ginger

Alpinia zerumbet
Categories:
Tropicals  ·  
Tropicals
Light
Morning sun / afternoon shade
Water
Moderate to high water needs in Phoenix. Keep soil consistently moist but not soggy; check frequently during extreme heat. Reduce watering in winter.
Size
6-10 ft tall × 4-6 ft wide
Habit
Perennial clump
Toxicity
Non-toxic
Description
A tropical, rhizomatous perennial with arching, leafy stems and hanging clusters of shell-shaped flowers; requires a sheltered, irrigated microclimate in Phoenix.
Bloom Time
Late spring to summer
Deciduous / Evergreen
Semi-evergreen
Special Features
Drought Tolerant, Fragrant
Growth Rate
Moderate to fast
Growth Habit
Perennial clump
Mature Size
6-10 ft tall × 4-6 ft wide
Flower Color
White / pink / yellow
Foliage Color
Green; variegated (green and yellow) forms available
Landscape Use
Border / Bed, Container / Patio, Tropical Garden
Garden Style
Tropical
Soil
Amended / Rich, Moist Soil, Well-Drained
Companion Plants
Bird of paradise, Philodendron
Non-toxic
Non-toxic
Care Instructions

Light: Bright filtered shade; gentle early-morning sun is acceptable. Protect from afternoon sun and reflected heat.

Water: Moderate to high water needs in Phoenix. Keep soil consistently moist but not soggy; check frequently during extreme heat. Reduce watering in winter.

Soil: Rich, moisture-retentive, well-drained soil amended with compost. Mulch to cool roots and conserve moisture, keeping mulch away from stem bases.

Mature size: Typically 6–10 feet tall and 4–8 feet wide under favorable conditions; often smaller in Phoenix or containers.

Bloom: Usually late spring through summer on established, second-year stems. Flowering may be limited in Phoenix if frost damages stems or heat stresses the plant.

Evergreen / deciduous: Evergreen in frost-free conditions; foliage and stems may die back after freezing temperatures, with regrowth from protected rhizomes.

Growth rate: Moderate to fast with warmth, consistent moisture, and adequate nutrition; slower under desert stress.