Celery

Apium graveolens

Apiaceae

Parsley

Petroselinum crispum

Apiaceae

Can you plant celery and parsley together?

Yes, with care. Celery and parsley are close relatives: both are in the Apiaceae family, so they share pests and diseases. Nothing we found says they help or harm each other beyond that.

What to watch for

Same family, shared pests. Celery 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)
No clear effect on growth. In a field trial, growing them together made no clear difference to growth.
Dataset of 16S rRNA and ITS gene amplicon sequencing of celery and parsley rhizosphere soils. (Babalola OO · 2025 · BMC genomic data)

What to plant with celery and parsley

Good neighbours of both, best tested first.

CabbageWith celery: 27% more harvestWith parsley: 181% more harvest
TomatoRecommended by garden charts for both, not tested yet

How each one was tested, with the evidence

What to keep away from celery and parsley

LettuceWith celery: Garden charts advise against it, not testedWith parsley: Garden charts advise against it, not tested
Sweet cornWith celery: 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 effect

avoidgood

1 paper found: 0 positive, 0 negative, 1 no effect.

other

auto-classified not reviewed by a person

Yield trial

No intercropping yield trial.

Same family, careful

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 celery and parsley

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

Plant	With celery	With parsley
Cabbage	27% more harvest from the same spaceField trial, 1 study. Charts: recommend.Evidence for celery and cabbage	181% more harvest from the same spaceField trial, 1 study. Charts: not listed.Evidence for parsley and cabbage

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 for both, not tested yet

Tomato

The evidence, with sources

ResearchNo effect1 entry

No effectotherfield trialauto-classified

Dataset of 16S rRNA and ITS gene amplicon sequencing of celery and parsley rhizosphere soils.
Dataset of 16S rRNA and ITS gene amplicon sequencing of celery and parsley rhizosphere soils. (Babalola OO · 2025 · BMC genomic data)

Relevance 95% · effect confidence 65%

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 celery and parsley

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

Have you grown celery 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.