Alpinia purpurata

Grow under glass with a minimum temperature of 16°C in winter, in loam-based compost with added leaf mould and composted bark. Position in bright, filtered light, ideally in a border where growth will not be constricted. Water freely in the growing season and moderately in winter

Cut out flowered stems in spring

Propagate by seed sown at 20°C as soon as ripe, or by division in spring

Generally pest-free

Generally disease-free