Asparagus Beans Companion Plants. Nightshades, like tomatoes and eggplant. Asparagus plant companions are plants that have a symbiotic relationship, one that is mutually beneficial to each.
Tomatoes can help these plants. Companion plants for beans or other crops should be plants that have a natural symbiotic relationship. We often pair them on a vegetable platter, but these plants should avoid each other in the garden.
Some of the greatest companion plants in my garden are those which have nothing to do with my vegetable patch, but are the awesome locally native trees and shrubs i have planted about the place.
Tomatoes are also compatible with chives and onion. In the springtime, wait until the soil has warmed to a warm 65 degrees before you plant the asparagus beans. Tomato plants are rich in solanine, which is known to repel the asparagus beetles that feast on the tender shoots and fronds of asparagus plants. Tomatoes are also compatible with chives and onion.