Tradition
Bad
avoidgood
1 chart entry: 0 recommend, 1 advise against.
0 cited, 1 uncited.
Carrot
Daucus carota subsp. sativus
Apiaceae
Parsnip
Pastinaca sativa
ApiaceaeCan you plant carrots and parsnips together?
Charts say no. Nobody has tested carrots with parsnips, as far as we could find. Both are in the Apiaceae family, so they share pests and diseases.
Why we can't give a firm answer
Garden charts advise against it. 1 garden chart entry says to keep them apart. It cites no source. Charts pass on gardening tradition; they are not tests.
List of companion plants (uncited entry) (Wikipedia)Same family, shared pests. Carrots and parsnips 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 parsnips
No plant in our data is a good neighbour of both carrots and parsnips yet.
What to keep away from carrots and parsnips
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
Research
No papers found on this pair.
Yield trial
No intercropping yield trial.
Untested folklore
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 carrots and parsnips
Plants that are good neighbours of each. Biggest harvest gain first; each cell links to the evidence for that pair.
No plant is a good neighbour of both carrots and parsnips in our data yet.
The evidence, with sources
- Badadvises againstCarrots: avoid parsnipList of companion plants (uncited entry) (Wikipedia)
- Both in Apiaceae: often susceptible to the same diseases and insectsCrop Rotation in the Vegetable Garden (Steil · 2025 · Iowa State University Extension and Outreach, Yard and Garden)
All neighbours of carrot and of parsnip, or every pair at once in the companion planting chart.
Have you grown carrots and parsnips 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.