Berkheya purpurea (South African Thistle) seeds
Hardy Perennial (to -5C)
Flowers: June to August
Position: Full sun in well-drained soil or containers
Packet of 15 seeds
Sowing Instructions: Sow at any time of year. Sow on the surface of a moist, free-draining peat based seed compost and cover the seed with a fine layer of sieved compost or vermiculite. Seal in a polythene bag or place in a propagator or other warm place and maintain at 15-20C. Germination should take place in 2-3 weeks.
Growing Instructions: When the seedlings are large enough to handle, pot up individually into small pots (7-9cm) and grow on in well-ventilated conditions at about 13 to 15C. Overwinter the seedlings if necessary in a frost free place. When established, gradually acclimatise to outdoor conditions before planting out in a sunny position.
It is a good idea to provide protection from severe or prolonged frosts in cold regions. Cover with a cloche or a thick layer of mulch once the plants have died back in late autumn, then remove in spring after the last frosts.