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Companion Plants for Asparagus

By Michelle Miley ; Updated September 21, 2017

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.

Beetle Beaters

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 repels the asparagus beetle_._ In return, the asparagus contains a chemical that kills nematodes that feed on tomatoes. Growing the plants together helps to naturally protect both.

Other asparagus beetle-repelling plants include marigolds (Tagetes spp.), petunias (Petunia hybrida) and parsley (Petroselinum crispum, biennial in USDA zones 5 to 9, but generally grown as an annual).

Basil Benefits

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.

General Gems

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)


 

About the Author

 

Writing professionally since 2008, Michelle Miley specializes in home and garden topics but frequently pens career, style and marketing pieces. Her essays have been used on college entrance exams and she has more than 4,000 publishing credits. She holds an Associate of Applied Science in accounting, having graduated summa cum laude.