How to Grow Sand Ginger
Kaempferia galanga
Sand ginger (kencur) is a compact tropical rhizome herb from Southeast Asia, growing in a flat rosette rarely taller than 25 cm. Unlike other gingers it thrives in part to full shade. Plant rhizomes 3-5 cm deep in rich, moist, well-drained compost once temperatures are above 20°C. Keep warm and humid; water regularly but avoid waterlogging. White and purple flowers emerge directly from the rhizome at ground level in summer. In temperate climates grow in containers and bring inside before frost; lift and store rhizomes dry at 10-15°C over winter. Harvest young rhizomes after 8-12 months for culinary use in rice dishes, spice pastes, and herbal medicine.
Yearly Lifecycle
Care Essentials
Feed monthly with a balanced liquid fertiliser during active growth (spring through summer). Reduce in autumn as foliage dies back. No feeding during dormancy.
Watch For
- Root rot from waterlogged soil
- Spider mites in dry indoor conditions
- Scale insects on leaf undersides
Companions
Turmeric, Lemongrass, Galangal
Care Requirements
Light
Part shade to full shade; avoid direct sun
Thrives in part to full shade, making it one of the most shade-tolerant edible gingers. Direct midday sun scorches the broad oval leaves. Dappled light under trees or a north-facing wall in temperate greenhouses works well.
Watering
Consistently moist; never waterlogged
Keep soil evenly moist throughout the growing season. Water every 2-3 days in warm conditions, more often in heat. Reduce watering as foliage dies back in autumn. Never allow the compost to dry out completely during active growth.
Fertilizing
Monthly balanced feed during active growth
Apply a balanced liquid fertiliser monthly from spring through summer. Avoid high-nitrogen feeds which push leafy growth at the expense of rhizome development. Stop feeding entirely once foliage begins to die back in autumn.
Pruning
No pruning; remove dead leaves as needed
No cutting back required during the growing season. Remove yellowing or dead leaves at the base. Cut all foliage to ground level in autumn when the plant enters dormancy.
Spacing
30 cm apart; 25-30 cm containers
Space rhizomes 30 cm apart for ground cover plantings in tropical climates. In containers, use pots at least 25-30 cm in diameter. One rhizome piece per small pot works well for compact growing.
Support
No support needed
Sand ginger is a low-growing rosette plant reaching only 20-25 cm. No staking or support structures are required.
Growing Tips
Embrace the shade
Unlike most gingers, sand ginger actually prefers part to full shade. Direct sun scorches its broad leaves. Under tall plants or beneath a tree canopy is ideal.
Keep it warm and humid
Minimum 20°C to grow actively. Below 15°C growth stops. Mist the leaves daily in heated indoor conditions to maintain the humidity it needs.
Harvest young for best flavour
Rhizomes harvested at 8-12 months are more tender and aromatic than older ones. The fresh rhizome has a distinctive earthy, camphorous flavour used in kencur rice (nasi kencur) and Southeast Asian spice pastes.
Spacing & Planting
| Plant spacing | 30 cm |
| Row spacing | 40 cm |
| Mature height | 25 cm |
| Mature spread | 40 cm |
Low-growing rosette; space 30 cm apart for ground cover. Good in 25–30 cm containers.
