Broccoli

Broccoli

Brassica oleracea var. italica
Brassicaceae

Companion plants for broccoli

The best companion plants for broccoli are cabbage, cauliflower, turnips, potatoes and fava beans. None of the plants we track is a clear bad neighbour. Of the 18 plants we have data on, 10 are good neighbours, 0 are bad ones and 3 are contested. 9 of these verdicts rest on field trials or research papers; the rest come from traditional companion-planting charts.

Neighbours of broccoli at a glance

Inner rings are backed by trials or papers, outer rings by charts only. Pick a plant to see its sources.

The interactive map needs JavaScript. Every plant on it is listed below with its evidence.

Good companion plants for broccoli

Biggest harvest gain first, then the plants tested without a yield count. Each row links to the full evidence for the pair.

PlantWhat trials found with broccoliTested byGarden charts
Cabbage Lures pests awaySame family (Brassicaceae): shares pests and diseases Field trial3 studies Not listed
Cauliflower Lures pests awaySame family (Brassicaceae): shares pests and diseases Field trial2 studies Not listed
Turnip No effect on pestsSame family (Brassicaceae): shares pests and diseases Field trial1 study Recommend
Potato Bigger combined harvest Field trial2 studies Not listed
Fava bean Lures pests away Field trial1 study Not listed

Recommended by garden charts, not tested yet

We found no trial or paper on these pairs with broccoli. They may still work; nobody has measured it.

TomatoDillOnionChivesBeet

What not to plant with broccoli

No plant in our data is a clear bad neighbour for broccoli.

Relatives that share pests and diseases

PlantWhat trials found with broccoliTested byGarden charts
Kale No trial foundSame family (Brassicaceae): shares pests and diseases Not tested Not listed
Brussels sprouts No trial foundSame family (Brassicaceae): shares pests and diseases Not tested Not listed
Kohlrabi No trial foundSame family (Brassicaceae): shares pests and diseases Not tested Not listed
Radish No trial foundSame family (Brassicaceae): shares pests and diseases Not tested Not listed

Contested pairings

The sources disagree, or the charts say one thing and the trials another. Open a pair before you plant it.

PlantWhat trials found with broccoliTested byGarden charts
Lettuce Mixed results on competition for light and water Field trial3 studies Recommend
Pepper Mixed results on pests Field trial1 study Not listed
Bean Mixed results on harvest Field trial1 study Not listed

No measurable effect

PlantWhat trials found with broccoliTested byGarden charts
Pea No effect on harvest Field trial1 study Not listed

Sources

11 sources behind the verdicts on this page. 6 chart entries cite no source and are marked as tradition only.

Show all 11 sources
Crop Rotation in the Vegetable Garden (Steil · 2025 · Iowa State University Extension and Outreach, Yard and Garden)
Trait-based cropping of brassicaceous plants: Effects on ecosystem services and crop yield (Ruhanen HM · 2023 · Biological control : theory and applications in pest management)
Crop interactions in broccoli intercropping (Santos RHS · 2002 · Biological agriculture & horticulture)
Lepidopteran pest populations and crop yields in row intercropped broccoli (Hooks · 2002 · Agricultural and Forest Entomology)
Companion Plants (Alabama Cooperative Extension System)
Plan a bed with broccoli

Same family (Brassicaceae): Cabbage, Cauliflower, Kale, Brussels sprouts, Kohlrabi, Turnip, Radish.

What grows well with your broccoli?

Share what worked next to your broccoli and what did not, or ask other growers a question. Reader notes are not checked by us and do not change the verdicts on this page.