The mix & match guide to companion planting Why sow seeds that aren t happy sharing a bed when you can plan a harmonious garden instead? With its ingenious split-page, mix and match system, Good Companions offers an immediate guide to the friends and foes of the gardening world, ensuring you have all the tools you need to grow your most successful crop yet! How does companion planting work? Well, take just one well-known example  squash, sweetcorn and beans. Together these three make a happy family: squash will shelter the beans roots, which in their turn will add beneficial nitrogen to the trio s soil, while the strong-growing sweetcorn will support the beans as they grow. And there are dozens of other groups that are equally good for one another  just flip the pages and match up the easy colour coding to plant up the happiest plot you can imagine.