Symphyotrichum novae-angliae

Germination

Sow indoors. Sow onto moist well-drained seed compost. Press seeds lightly into soil but do not cover. Ideal temp. 20°C. Germination takes 10 days approx. Seeds must be kept damp at all times or germination will cease. If germination does not occur cold stratify. Move to 4°C. for 2-4 weeks then return to warmth. Transplant seedlings once large enough to handle to 8cm pots and grow on in cooler conditions. Acclimatise and plant out after danger of frost has passed with 100cm spacing.

Growing

Prefers fertile, well-drained soil in an open sunny position. Water in well. Apply a mulch to keep the soil cool. Water if the weather is dry.

Cultivation

Cut back after flowering in winter as the foliage dies. Mulch each spring. Divide every 2-3 years to maintain plant vigour.