Lablab (Lablab purpureus, which used to be called Dolichos purpureus) is an ornamental climber that produces edible pods. The fragrant, sweet pea-like bicoloured pink flowers, followed by dark purple to brown seed pods, are set off by deep green and purple/brown foliage.
Sow during spring in pots or trays of a good seed compost just covering the seed with compost at 20-25C (70-75F).
When large enough to handle, transplant the seedlings to 7.5cm (3in) pots, and grow on at 13-15C (55-60F). When well grown gradually acclimatise to outdoor conditions and plant out in late spring/early summer after all risk of frost has passed 30cm (12in) apart in moist but well-drained soil and a sheltered sunny position. Plants can also be grown in a 20-25cm (8-10in) pot in a greenhouse or conservatory.
Train plants up bamboo canes, wires or similar supports as you would sweet peas or runner beans.
Water regularly during warm, dry periods. Keep the atmosphere around plants grown indoors fairly humid.
Harvest pods regularly when small. Old, mature pods can become stringy.
