Half Hardy Annual
Description – Zinnias are easy to grow and can be sown directly outdoors. The small, pompom flowers are produced in a range of colours and are loved by bees and butterflies! An excellent border filler, or try some in patio pots.
Sowing – Sow seeds on the surface of a good, free-draining, damp, seed compost. Lightly cover, 3mm (1/8in) deep with vermiculite or compost. Place container in a propagator or seal inside a polythene bag at 20-30C (68-86F) until after germination which usually takes 7-14 days. Can also be sown direct into the soil after last frost.
Growing – Transplant seedlings when large enough to handle, taking care not to damage the fragile roots, into trays or 7.5cm (3in) pots. Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost 30cm (12in) apart.
Flowers – June to September