Tradition
No chart mentions this pair.
Sweet potato
Ipomoea batatas
Convolvulaceae
Tomato
Solanum lycopersicum
SolanaceaeCan you plant sweet potatoes and tomatoes together?
Yes. Sweet potatoes and tomatoes grow well together. Sweet potatoes lured pests away from tomatoes in a field trial. That rests on a single study, so treat it as a lead, not a rule.
Why sweet potatoes and tomatoes work together
Lures pests away. In a field trial, sweet potatoes lured pests away from tomatoes.
Effect of intercropping on tomato yellow leaf curt virus incidenceon tomato (Yin Xiangui · 2002 · Xi nan nong ye xue bao = Southwest China journal of agricultural sciences)
What to plant with sweet potatoes and tomatoes
Good neighbours of both, best tested first.
OkraWith sweet potatoes: Recommended by garden charts, not testedWith tomatoes: About the same harvest
What to keep away from sweet potatoes and tomatoes
RosemaryWith tomatoes: 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
Research
Good
avoidgood
1 paper found: 1 positive, 0 negative.
trap crop
auto-classified not reviewed by a person
Yield trial
No intercropping yield trial.
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.
Companion plants for both sweet potatoes and tomatoes
Plants that are good neighbours of each. Biggest harvest gain first; each cell links to the evidence for that pair.
| Plant | With sweet potatoes | With tomatoes |
|---|---|---|
| Okra | No trial foundNot tested. Charts: recommend.Evidence for sweet potatoes and okra | About the same harvest as separate bedsField trial, 2 studies. Charts: recommend.Evidence for tomatoes and okra |
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
- Goodtrap cropfield trialauto-classifiedSweet potato helps TomatoEffect of intercropping on tomato yellow leaf curt virus incidenceon tomatoEffect of intercropping on tomato yellow leaf curt virus incidenceon tomato (Yin Xiangui · 2002 · Xi nan nong ye xue bao = Southwest China journal of agricultural sciences)Relevance 92% · effect confidence 81%
All neighbours of sweet potato and of tomato, or every pair at once in the companion planting chart.
Have you grown sweet potatoes and tomatoes 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.