Q.Planting Together.
Runner beans, string beans and peas. Having limited space in my garden, could these vegetables be planted together?

Certified GKH Gardening Expert
You can plant the beans and peas with each other, but beans can't be planted with other beans without competing for space and nutrients. Different types of beans won't even tolerate being planted too close to each other in ground.
You will have to rotate out which you choose at one time.
This article will help you with companion gardening:
https://www.gardeningknowhow.com/edible/vegetables/vgen/companion-vegetable-garden.htm