Polemonium yezoense hidakanum, 'Purple Rain'

Germination

Sow indoors or under glass in autumn or spring. Surface sow onto moist, well-drained seed compost. Just cover seed with a sprinkling of vermiculite. Ideal temp. 15-18°C. Allow temperature to fall slightly at night. Germination takes 20-25 days approx. If temps. rise too high germination may fail. Transplant seedlings when large enough to handle to 8cm pots and grow on in light shade. Overwinter under glass for the first year. Acclimatise and plant out the following year after danger of frost has passed.

Growing

Prefers any fertile, moist but well-drained soil in full or partial sun.

Cultivation

Will self-seed freely. Deadhead if you do not want volunteer seedlings next season. Cut back to the base of the plant in autumn. Propagate by division in spring.