Calendula seeds officinalis Seeds - Art Shades Mixed Ref: TM01401520 SowingBest sown where they are to flower in spring or late summer/early autumn for overwintering. Sow 1cm (½in) deep in rows 30cm (12in) apart in well cultivated soil which has been raked to a fine tilth.<p>For winter/early spring flowering sow in late summer/early autumn and pot plants in a cool greenhouse or conservatory.GrowingThin out the seedlings to 23cm (9in) apart. They will grow in sun or part-shade and in the poorest of soils.Aftercare FloweringcroppingPlant typeHardy Annual Price: £1.89 Quantity: