Sow in pots or rootrainers under glass in April, or in the open May-July when the soil and weather is warm. Sow 5cm deep, 5-8cm apart in 45cm rows, 15-20cm apart in beds. Start picking before pods become overgrown as they will be less tender. Extend the growing season under cloches, greenhouse or polytunnel. Average height 30-60cm.