Indoors March to April. A warm kitchen windowsill is all you need for starting these seeds. Sow 1.5cm (½") deep in trays of seed compost. Water well and place in a warm position. A temperature of 15-20°C (60-68°F) is ideal. Seedlings usually appear in 14-21 days. Transplant to other trays, 5cm (2") apart, when plants are large enough to handle. Grow on in cooler, but not cold conditions. Gradually accustom plants to outside conditions (avoid frosts), before planting out, in rows 30cm (1') apart, May-June, into rich, well-drained soil. Plant so that the upper, swollen part of the root sits on the surface of the soil. Water well and remove outer leaves as roots swell. Harvest: August to December.