Carrot

Daucus carota subsp. sativus

Apiaceae

Parsley

Petroselinum crispum

Apiaceae

Can you plant carrots and parsley together?

Yes. Carrots and parsley grow well together. A shared bed gave about 137% more harvest than separate beds in one field trial. That rests on a single study, so treat it as a lead, not a rule.

Why carrots and parsley work together

More harvest from the same bed. In one field trial, a bed with both crops gave about 137% more harvest than the same space split into a carrot bed and a parsley bed.
The effect of intercropping on yielding of root vegetables of Apiaceae family (Blazewicz-Wozniak · 2011)
Same family, shared pests. Carrots and parsley are both in the Apiaceae family, so the same pests and diseases can move from one to the other.
Crop Rotation in the Vegetable Garden (Steil · 2025 · Iowa State University Extension and Outreach, Yard and Garden)

What to plant with carrots and parsley

Good neighbours of both, best tested first.

CabbageWith carrots: 19% more harvestWith parsley: 181% more harvest
Sweet cornWith carrots: 50% more harvestWith parsley: Recommended by garden charts, not tested

How each one was tested, with the evidence

What to keep away from carrots and parsley

PeaWith carrots: Smaller combined harvest
ParsnipWith carrots: Garden charts advise against it, not tested
DillWith carrots: Garden charts advise against it, not tested
PotatoWith carrots: Garden charts advise against it, not tested
RadishWith carrots: Garden charts advise against it, not tested
LettuceWith parsley: 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

Same family, shared pests and diseases. Both in Apiaceae: often susceptible to the same diseases and insects. Source: Iowa State University Extension and Outreach, Yard and Garden

Tradition

No chart mentions this pair.

Research

No papers found on this pair.

Yield trial

Good

1.22

0.93

Carrot gains more. Partial LER is each crop's share of the yield it would give alone.

1 field trial. Published LERs lean high.

Good neighbours

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.

What is going on (2)

Pick a card to spotlight its animation in the scene.

Carrot ParsleyCarrot and Parsley are close relatives, so the same insects and diseases can hop from one to the other.

Same familyextension guidance x1

Crop Rotation in the Vegetable Garden (Steil · 2025 · Iowa State University Extension and Outreach, Yard and Garden)

Carrot ParsleyMedian land equivalent ratio 2.37 over 1 trial: growing them together gave 2.37 times the harvest of two separate plots of the same size.

Partial LERs (medians): Carrot 1.22 + Parsley 0.93. Range across treatments 1.49 to 2.38. Medians are taken separately, so the parts need not add up to the median LER. LER above 1 is biased upward by publication bias.

Yield trialfield trial x1

The effect of intercropping on yielding of root vegetables of Apiaceae family (Blazewicz-Wozniak · 2011)

Companion plants for both carrots and parsley

Plants that are good neighbours of each. Biggest harvest gain first; each cell links to the evidence for that pair.

Plant	With carrots	With parsley
Cabbage	19% more harvest from the same spaceField trial, 1 study. Charts: not listed.Evidence for carrots and cabbage	181% more harvest from the same spaceField trial, 1 study. Charts: not listed.Evidence for parsley and cabbage
Sweet corn	50% more harvest from the same spaceField trial, 2 studies. Charts: not listed.Evidence for carrots and corn	No trial foundNot tested. Charts: recommend.Evidence for parsley and corn

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

Yield trialGood1 entry

GoodLER 2.37field trial

Poland, 2004-2006; Replacement design; median LER 2.37 over 3 treatment(s) · partial LER Carrot 1.22, Parsley 0.93
The effect of intercropping on yielding of root vegetables of Apiaceae family (Blazewicz-Wozniak · 2011)

Same familyShares pests1 entry

Both in Apiaceae: often susceptible to the same diseases and insects
Crop Rotation in the Vegetable Garden (Steil · 2025 · Iowa State University Extension and Outreach, Yard and Garden)

Plan a bed with carrots and parsley

All neighbours of carrot and of parsley, or every pair at once in the companion planting chart.

Have you grown carrots and parsley 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.