A perennial vegetable grown in U.S. Department of Agriculture plant hardiness zones 4 through 9, asparagus (Asparagus officinalis) does best when grown with certain other plants. These companion plants benefit asparagus by repelling asparagus pests, attracting pollinators or providing nutrients that generally improve the overall vigor and health of the asparagus.
Several companion plants can be used to naturally keep asparagus beetles away from your crop. Tomatoes (Solanum lycopersicum) and asparagus are perfect garden companions. Tomatoes contain a chemical known as solanine, which
Other asparagus beetle-repelling plants include marigolds (Tagetes spp.), petunias
The warm-season annual herb basil (Ocimum basilicum) is frequently grown with asparagus. Growing the two plants together attracts ladybugs, beneficial insects known to eat aphids, a pest known for attacking asparagus and other garden vegetables. Basil also repels the asparagus beetle as well as tomato hornworm, making asparagus, tomatoes and basil the perfect companion planting trifecta.
Several other garden plants repel while attracting bees and other pollinators that help all of your garden plants produce more blooms and vegetables. Other companion plants for asparagus include:
- Aster (Aster spp., USDA zones 3 through 8)
- Comfrey (Symphytum spp., USDA zones 4 through 9)
- Coriander (Coriandrum sativum)
- Dill (Anethum graveolens)
- Nasturtium (Tropaeolum majus)