Chiltern Seeds Corkscrew Rush – Juncus effusus spiralis, ‘Twister’
Indoors, sow seed and place somewhere warm, 18-22°C for 2-4 weeks. If germination has not occured, cold stratify. Move to -4-+4°C for 4-6 weeks then return to warmth, 5-12°C for germination. Transplant seedlings when large enough to handle, grow on. Acclimatise and plant out after danger of frost has passed.
In a cold frame, sow into moist, well-drained seed compost. Allow autumn warmth followed by natural winter cold to offer ideal conditions for germination to occur in spring as the weather warms.