Sweet corn

Zea mays

Poaceae

Garlic

Allium sativum

Amaryllidaceae

Can you plant corn and garlic together?

Yes. Corn and garlic grow well together. A shared bed gave about 33% more harvest than separate beds in one field trial. That rests on two studies, so treat it as a lead, not a rule.

Why corn and garlic work together

More harvest from the same bed. In one field trial, a bed with both crops gave about 33% more harvest than the same space split into a sweet corn bed and a garlic bed.
Competition-recovery and overyielding of maize in intercropping depend on species temporal complementarity and nitrogen supply (Zhao · 2023)

What to plant with corn and garlic

Good neighbours of both, best tested first.

PeaWith corn: 40% more harvestWith garlic: 30% more harvest
BeanWith corn: 43% more harvestWith garlic: Draws in pest-eating insects
CucumberWith corn: Fewer pestsWith garlic: Bigger combined harvest

How each one was tested, with the evidence

What to keep away from corn and garlic

CeleryWith corn: Garden charts advise against it, not tested
AsparagusWith garlic: 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

Tradition

No chart mentions this pair.

Research

Good

avoidgood

1 paper found: 1 positive, 0 negative.

yield / land use

auto-classified not reviewed by a person

Yield trial

Good

0.81

0.54

Sweet corn 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.

Sweet corn GarlicGrown together, Sweet corn and Garlic gave more food from the same ground than apart.

Researchfield trial x1

Maize‐based intercropping systems in Bangladesh: Exploring the potential of spice and tuber crops in charland areas (Dash PC · 2026 · Agronomy journal.)

Sweet corn GarlicMedian land equivalent ratio 1.33 over 1 trial: growing them together gave 1.33 times the harvest of two separate plots of the same size.

Partial LERs (medians): Sweet corn 0.81 + Garlic 0.54. Range across treatments 1.13 to 1.43. 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

Competition-recovery and overyielding of maize in intercropping depend on species temporal complementarity and nitrogen supply (Zhao · 2023)

Companion plants for both corn and garlic

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

Plant	With corn	With garlic
Pea	Better soil and nutrient uptake40% more harvest from the same spaceField trial, 11 studies. Charts: recommend.Evidence for corn and peas	30% more harvest from the same spaceField trial, 2 studies. Charts: recommend.Evidence for garlic and peas
Bean	Draws in pest-eating insects, fewer pests and better soil and nutrient uptake43% more harvest from the same spaceField trial, 22 studies. Charts: recommend.Evidence for corn and beans	Draws in pest-eating insectsField trial, 1 study. Charts: not listed.Evidence for garlic and beans
Cucumber	Fewer pestsField trial, 1 study. Charts: not listed.Evidence for corn and cucumbers	Bigger combined harvest and better soil and nutrient uptakeChemicals that hold growth backField trial, 5 studies. Charts: recommend.Evidence for garlic and cucumbers

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

ResearchGood1 entry

Goodyield / land usefield trialauto-classified

Maize‐based intercropping systems in Bangladesh: Exploring the potential of spice and tuber crops in charland areas
Maize‐based intercropping systems in Bangladesh: Exploring the potential of spice and tuber crops in charland areas (Dash PC · 2026 · Agronomy journal.)

Relevance 81% · effect confidence 94%

Yield trialGood1 entry

GoodLER 1.33field trial

China, 2009-2010; Replacement design; median LER 1.33 over 4 treatment(s) · partial LER Sweet corn 0.805, Garlic 0.535
Competition-recovery and overyielding of maize in intercropping depend on species temporal complementarity and nitrogen supply (Zhao · 2023)

Plan a bed with corn and garlic

All neighbours of sweet corn and of garlic, or every pair at once in the companion planting chart.

Have you grown corn and garlic 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.