Step-by-Step Growing Guide
Galangal (Alpinia galanga — greater galangal) requires tropical warmth and humidity — minimum sustained temperatures of 15–20°C, high humidity, and no frost. It thrives in rich, moisture-retentive, well-draining soil with a pH of 5.5–7.0, heavily amended with compost and leaf mould. Plant rhizome sections 5–8 cm deep with at least 2–3 growing buds visible, spaced 60 cm apart in a partially shaded or full-sun position in tropical climates. Water frequently and consistently — galangal wilts rapidly under dry conditions. Feed monthly with a balanced fertiliser high in potassium. The plant reaches 1.5–2 metres in height with spectacular tropical foliage and, in optimal conditions, small white and pink orchid-like flowers. In temperate climates, grow in large containers indoors or in a heated greenhouse with a minimum of 15°C year-round. Container-grown plants in pots of minimum 40-litre capacity produce harvestable rhizomes in 2–3 years.