When to sow: Feb-Apr
Rudbeckia tips: Sow indoors in pots or trays with seed compost. Just cover with a fine layer of vermiculite and keep at temperatures of around 20°C. Keep soil moist but not wet. Germination takes 10-15 days. Cold stratification can improve the germination rate, as can some warmth. Prick out seedlings if appropriate. Harden off and plant out after danger of frost has passed with 40cm spacing. Regular deadheading encourages extended flowering and further blooms.