Useful Tips

                                  Incompatible Plants
Some plants should not be grown together because of their effect on each other or because they are susceptible to the same diseases.
Keep these ones apart:

Beans and Onions - onion will stunt bean's growth

Carrot and Dill - dill will stunt carrot's growth

Cucumber and Sage - sage will stunt cucumber's growth

Pea and Onion - onion will stunt pea's growth

Potato and Tomato - both are attacked by the same blight

Pumpkin and Potato - potato will inhibit pumpkin's growth

Tomato and Sweetcorn -  attracts worms that feed on tomato

Turnip and Potato - potato will inhibit turnip's growth

From ''The Gardener's Companion''