About Carrot
Carrots need fine, stone-free soil and steady moisture — classic companions include onions (carrot fly confusion) and shallow-rooted lettuce in inter-rows.
Carrot fly peaks in humid periods — allium companions and row covers help.
Good companions
Plants that pair well with Carrot — tap for their guides. Cited sources appear where research is linked in the matrix.
Carrots loosen soil around tomato roots while tomatoes shade carrot shoulders — a common interplant in raised beds.
Onion Pest confusionOnion scent may confuse carrot fly; carrots may deter onion fly — a classic paired row in UK/NZ guides.
Lettuce Spatial pairingLettuce and carrot root at different depths — efficient use of raised-bed space in succession plantings.
Pea Nitrogen fixationPeas fix nitrogen while carrots occupy the subsoil layer — a classic cool-season intercrop.
Leek Pest confusionLeeks and carrots are a classic paired row — each may deter the other's root fly when alternated.
ChiveListed as beneficial in the matrix — open the grid for full context.
Rosemary Pest confusionRosemary's aromatic oils may deter carrot fly when planted at bed edges — keep rosemary on drier, free-draining soil.
SageListed as beneficial in the matrix — open the grid for full context.
MizunaListed as beneficial in the matrix — open the grid for full context.
SalsifyListed as beneficial in the matrix — open the grid for full context.
SalviaListed as beneficial in the matrix — open the grid for full context.
ScorzoneraListed as beneficial in the matrix — open the grid for full context.
WormwoodListed as beneficial in the matrix — open the grid for full context.
+ 2 more in the matrix
Avoid planting together
Known poor neighbours — spacing apart or rotating beds reduces shared pest and disease pressure.
Growing tips
- Sow thinly; thin seedlings to avoid forked roots from crowding.
- Never use fresh manure — causes forking and hairy roots.
- Keep dill away if saving carrot seed (same Apiaceae family).
Use the compatibility matrix
Filter to Carrot to see green (beneficial), red (incompatible), and grey (neutral) for every pair among 162 plants. Desktop: hover cells. Mobile: tap for details.