Alyssum Seeds - maritima procumbens Avalanche Ref: TM01403650 SowingSow early spring to early summer outdoors where they are to flower. Prepare the ground well and rake to a fine tilth before sowing. Sow 1.5mm (1/16in) deep in rows 30cm (12in) apart. Germination usually takes approximately 21 days.<p>For earlier flowers they can be sown under glass, germination takes 7-14 days at 18C (65F), pricked out into boxes and planted out when the weather is mild.GrowingWhen large enough to handle thin out to 15cm (6in) apart.Aftercare They prefer asunny open site but will grow in most sites and soils.FloweringSummercroppingPlant typeHardy Annual Price: £1.99 Quantity: