Tradition
No chart mentions this pair.
Broccoli
Brassica oleracea var. italica
Brassicaceae
Pepper
Capsicum annuum
SolanaceaeCan you plant broccoli and peppers together?
It depends. The sources disagree about broccoli and peppers. Results on pests were mixed in a field trial.
Why it depends
Mixed results on pests. In a field trial, results on pests were mixed.
Broccoli growth parameters and level of head infestations in simple and mixed plantings: impact of increased flora diversification. (Hooks CRR · 2001 · Annals of applied biology.)
What to plant with broccoli and peppers
Good neighbours of both, best tested first.
OnionWith broccoli: Recommended by garden charts, not testedWith peppers: 20% more harvest
TurnipWith broccoli: Recommended by garden chartsWith peppers: Fewer pests
DillWith broccoli: Recommended by garden charts, not testedWith peppers: Draws in pest-eating insects
ChivesWith broccoli: Recommended by garden charts, not testedWith peppers: Fewer pests
What to keep away from broccoli and peppers
KaleWith peppers: Garden charts advise against it, not tested
Brussels sproutsWith peppers: Garden charts advise against it, not tested
The evidence in detail
For readers who want to dig in: every chart entry, study and yield trial behind the answer above, with the numbers.
Tradition, research and yield trials
Research
Mixed
avoidgood
1 paper found: 0 positive, 0 negative, 1 mixed.
pest suppression
auto-classified not reviewed by a person
Yield trial
No intercropping yield trial.
It's complicated
What happens above and below ground
Each animation illustrates a mechanism a study reported for this pair. Pick a card to focus on it.
Everything at once.
Companion plants for both broccoli and peppers
Plants that are good neighbours of each. Biggest harvest gain first; each cell links to the evidence for that pair.
| Plant | With broccoli | With peppers |
|---|---|---|
| Onion | No trial foundNot tested. Charts: recommend.Evidence for broccoli and onions | 20% more harvest from the same spaceField trial, 6 studies. Charts: recommend.Evidence for peppers and onions |
| Turnip | No effect on pestsSame family (Brassicaceae): shares pests and diseasesField trial, 1 study. Charts: recommend.Evidence for broccoli and turnips | Fewer pestsGreenhouse or pot trial, 1 study. Charts: not listed.Evidence for peppers and turnips |
| Dill | No trial foundNot tested. Charts: recommend.Evidence for broccoli and dill | Draws in pest-eating insectsField trial, 1 study. Charts: not listed.Evidence for peppers and dill |
| Chives | No trial foundNot tested. Charts: recommend.Evidence for broccoli and chives | Fewer pestsGreenhouse or pot trial, 1 study. Charts: not listed.Evidence for peppers and chives |
Harvest from the same space compares a bed with both crops against the same area split into single-crop beds, counting the harvest of both crops (the land equivalent ratio in yield trials).
The evidence, with sources
- Mixedpest suppressionfield trialauto-classifiedBroccoli growth parameters and level of head infestations in simple and mixed plantings: impact of increased flora diversification.Broccoli growth parameters and level of head infestations in simple and mixed plantings: impact of increased flora diversification. (Hooks CRR · 2001 · Annals of applied biology.)Relevance 96% · effect confidence 65%
All neighbours of broccoli and of pepper, or every pair at once in the companion planting chart.
Have you grown broccoli and peppers together?
Tell other gardeners what happened: spacing, pests, harvest, or ask a question. Reader notes are not checked by us and do not change the verdicts on this page.