Companion Planting
Intercropping: two crops in one bed, without losing either
How to fit a second crop into a bed without halving the first. Keep the main crop at full spacing, use the time, height and root gaps, and compare days to maturity before you sow.
Three Sisters in Australia: corn, beans and squash in one bed
Corn, climbing beans and squash in one patch works here, but the planting order decides it. Block spacing, the 15 cm bean rule, why the beans do not feed the corn, and sowing windows for all six climate zones.