Lupin Seeds hartwegii ssp. cruickshankii Sunrise Seeds - Lupin Seeds Ref: TM01403025 SowingSowing Time: March to May, where it is to flower. Sow seeds sparingly, 6mm (¼in) deep in drills 30cm (12in) apart in well-cultivated soil which has been raked to a fine tilth. Seedlings should not require thinning. Optimum Germination Temperature: 65-85F (18-30C). Seedlings should emerge within 18-21 days.GrowingThey will grow well in any good garden soil but prefer a deep, water drained soil and full sun.Aftercare Water ground regularly, especially in dry periods.FloweringSummercroppingPlant typeHardy Annual Price: £2.49 Quantity: