Peas climbing bamboo;Peas fix nitrogen in the soil. Plant next to corn. Companions for peas are bush beans, bole beans, carrots, celery, chicory, corn, cucumber, eggplant, parsley, early potato, radish, spinach, strawberry, sweet pepper, tomatoes and turnips. Do not plant peas with chives, gladiolus, grapes, late potatoes or onions.