Nepeta cataria ssp. citrina Seeds Ref: TM01408445 SowingSow spring to autumn in good free draining seed compost, just covering the seed with compost. Germination usually takes 7-21 days at 16-20C (60-70P). The seed can also be sown in spring where it is to flower in a well raked moist seed bed.GrowingWhen the seedlings are large enough to handle transplant into 7.5cm (3in) pots, grow cool and finally plant out 30cm (12in) apart into a sunny spot in free draining soil.Aftercare Overwinter autumn sown plants in a well ventilated cold- frame and plant out in spring.FloweringSummercroppingPlant typeHardy Perennial Price: £2.09 Quantity: