Posted: 08/05/2013 at 12:55
There is a combination of planting used by Natve Americans called the Three Sisters. The sisters are sweetcorn, climbing beans and cucurbits (squash, courgette, cucumber, melon etc.) The beans climb up the sweetcorn, and the squash or whatever acts as a living mulch.
Never tried it myself, but this year I'm going to try courgettes in a raised bed, backed by climbing beans. Not sure about the sweetcorn yet.
If you google Three Sisters, you will find more detailed information