Dahlia Seeds variabilis Double Extreme Seeds Ref: TM01407628 SowingSow February to April at 20-25C (68-77F) on the surface of a good free draining, damp seed compost. Apply a fine sprinkling of vermiculite, 6mm (¼ inch) deep. Place in a propagator or seal container inside a polythene bag until after germination which usually takes 7-21 days. Do not exclude light at any stage, as this helps germination.GrowingTransplant seedlings, when large enough to handle, into trays or 7.5cm (3 inch) pots. Grow on in cooler conditions for 10-15 days before planting out after all risk of frost, 30cm (12 inches) apart.Aftercare Prefers a moist, well drained soil in full sun. Flowers summer.FloweringSummercroppingPlant typeHalf-hardy Annual Price: £2.89 Quantity: