This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
Unless there is a demand for these, they are not worthy of a place on a sheltered border. If wanted very early for a particular purpose, they may be sown singly in 4-inch pots, and started in a gentle heat. The young plants should be kept sturdy, and hardened off early; they may then be planted out, on the first favourable occasion, 5 inches asunder, in lines 2 feet apart. Protect slightly in the first instance, and stake up the heavy exhibition varieties, such as the Seville Longpod and Carter's Leviathan.