Sophisticated climber, masses of 1½in indigo to violet blue, pink or pure white flowers. Quick to bloom from an early sowing. Ideal for the cold greenhouse or conservatory. One of the longest flowering annuals, in bloom untill Christmas if there is no hard frost or in the greenhouse during winter.
Climbs to 120-240cm (4-8ft).
Sow from early February to mid April in a good seed compost just covering the seed with a thin layer of compost or vermiculite. Germination takes 14-21 days at 20-24C (70-75F). Seal in a polythene bag after sowing and don't exclude light.
Water well and feed once a week through the summer. To overwinter, bring indoors to a cool, frost free place in autumn and keep just moist. For a windowsill pot plant, grow on in a 13cm (5in) pot.