These zinnias are real eye-catchers! Zinnia elegans ‘Forecast’ is a long-lasting and easy-to-grow variety which produces vivid purple, pink, orange, salmon, yellow and cream blooms, the brightly-coloured petals surrounding striking yellow central stamens.”Sow seeds on the surface of a good, free-draining, damp seed compost. Then lightly cover, 3mm (1/8in) deep, with vermiculite or compost. Place container in a propagator or seal inside a polythene bag at a temperature of 20-30?C (68-86?F) until after germination which usually takes7-21 days.”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 30cm (12in) apart after all risk of frost has passed.