Radish
Companion plants for radishes
The best companion plants for radishes are peppers, corn, beans, fava beans and watermelon. Carrots are best kept away. Of the 19 plants we have data on, 8 are good neighbours, 1 is a bad one and 3 are contested. 10 of these verdicts rest on field trials or research papers; the rest come from traditional companion-planting charts.
- 8 good
- 1 to avoid
- 3 contested
- 10 tested in trials or papers
Neighbours of radishes 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 radishes
Biggest harvest gain first, then the plants tested without a yield count. Each row links to the full evidence for the pair.
| Plant | What trials found with radishes | Tested by | Garden charts |
|---|---|---|---|
 Pepper |
69% more harvest from the same space | Field trial2 studies | Not listed |
 Sweet corn |
40% more harvest from the same space | Field trial2 studies | Not listed |
 Bean |
21% more harvest from the same space | Field trial1 study | Recommend |
 Fava bean |
Better soil and nutrient uptake | Field trial1 study | Not listed |
 Watermelon |
Bigger combined harvest | Field trial1 study | Not listed |
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).
Recommended by garden charts, not tested yet
We found no trial or paper on these pairs with radishes. They may still work; nobody has measured it.
What not to plant with radishes
| Plant | What trials found with radishes | Tested by | Garden charts |
|---|---|---|---|
 Carrot |
No trial found | Not tested | Advise against |
Relatives that share pests and diseases
| Plant | What trials found with radishes | Tested by | Garden charts |
|---|---|---|---|
 Cauliflower |
No effect on harvestSame family (Brassicaceae): shares pests and diseases | Field trial1 study | Not listed |
 Broccoli |
No trial foundSame family (Brassicaceae): shares pests and diseases | Not tested | Not listed |
 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 |
 Turnip |
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.
| Plant | What trials found with radishes | Tested by | Garden charts |
|---|---|---|---|
 Lettuce |
78% more harvest from the same spaceCompetes for light and water | Field trial4 studies | Recommend |
 Cabbage |
42% more harvest from the same spaceMixed results on growthSame family (Brassicaceae): shares pests and diseases | Field trial7 studies | Not listed |
 Pea |
Better soil and nutrient uptake30% more harvest from the same space | Field trial3 studies | Recommend |
No measurable effect
| Plant | What trials found with radishes | Tested by | Garden charts |
|---|---|---|---|
 Okra |
No effect on harvest | Field trial1 study | Not listed |
Sources
21 sources behind the verdicts on this page. 12 chart entries cite no source and are marked as tradition only.
Show all 21 sources
Same family (Brassicaceae): Cabbage, Broccoli, Cauliflower, Kale, Brussels sprouts, Kohlrabi, Turnip.
What grows well with your radishes?
Share what worked next to your radishes 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.