Companion Planting Guide
Select a crop to see which plants grow well as neighbors. Covers all 190 crops in the Garden ROI database with 370 recorded pairings.
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How companion planting data works
Relationships are drawn from extension service recommendations and horticultural research. They are bidirectional: if Tomato lists Basil as a companion, selecting Basil will also show Tomato. Use this as a planning starting point - companion planting effects vary by soil, climate, and variety.
For growing details, yield data, and ROI estimates on any crop, browse the full crop directory or visit individual crop pages linked from the results.