Costus speciosus, also known as Cheilocostus speciosus or crepe ginger, is a rhizomatous perennial herb native to Southeast Asia, particularly from the Himalayas to Indonesia. Known for its beautiful spiral-arranged leaves and striking white or pale pink crepe-like flowers with red bracts, this plant has been traditionally used in Ayurvedic and Southeast Asian medicine for its anti-diabetic, anti-inflammatory, and various other medicinal properties.
Before sowing
Sowing
What to expect
Tips
Seeds should ideally germinate in 2-6 weeks but can take considerably longer. Keep soil consistently moist but not waterlogged. Sow seeds in good light onto soil-based compost. Cover seeds with fine grit or compost to approximately their own depth. Germination is erratic and patience is required. Transplant seedlings when large enough to handle to individual pots and grown on under glass. Plant requires warm, humid climate with well-drained soil. Prefers partial shade to full sun. Root hardy in USDA zones 7-12.
Sources: Plant World Seeds, Chiltern Seeds, Seeds for Garden, Gardening Know How, Pacific Bulb Society, Wikipedia (Cheilocostus speciosus), World Flora Online
