Dianthus barbatus nigrescens Sooty Seeds Ref: TM01402017 SowingSow in May-June outdoors in a moist, well forked and raked seed bed. Sow thinly, 1cm (½in) deep in drills spaced 15cm (6in) apart. Keep seed bed well watered in dry weather.<p>They can also be sown indoors in late April-May in a good seed sowing compost just covering the seed with compost. Germination takes 7-14 days at 18-20C (65-70P).GrowingTransplant to a reserve border, when large enough to handle 15cm (6in) apart in rows 30cm (12in) apart. Plant 30cm (12in) apart in the flower border in September.<p>For April sowings, when large enough to handle transplant the seedlings to boxes, grow cool and well lit. When well grown, gradually acclimatise to outdoor conditions and plant out in a reserve border as described above.Aftercare FloweringEarly SummercroppingPlant typeHardy Biennial Price: £1.99 Quantity: