Companion Plants for Kohlrabi
Kohlrabi thrives alongside Beet, Onion, Cucumber, and more. Here's the complete guide to what to plant nearby — and what to keep at a distance.
✅ Best Companions for Kohlrabi
These plants improve each other's growth, deter pests, or attract pollinators when planted nearby.
Uses underground space while Kohlrabi occupies the canopy above — minimal resource competition, maximum bed productivity.
View Beet's companions →Compatible neighbors that share space and resources efficiently without competing for the same nutrients.
View Onion's companions →Compatible neighbors that share space and resources efficiently without competing for the same nutrients.
View Cucumber's companions →Compatible neighbors that share space and resources efficiently without competing for the same nutrients.
⚠️ What Not to Plant Near Kohlrabi
These combinations can stunt growth, attract pests, or compete heavily for the same nutrients.
Can inhibit growth or share pests and diseases — keep a full bed-width apart.
View Tomato's companions →Can inhibit growth or share pests and diseases — keep a full bed-width apart.
Can inhibit growth or share pests and diseases — keep a full bed-width apart.
View Strawberry's companions →🤝 Plants That Benefit from Kohlrabi
These plants list Kohlrabi as a beneficial neighbor — so the relationship goes both ways.
📐 How to Plant Kohlrabi with Companions
Start with spacing
Plant Kohlrabi at its recommended spacing (6" apart) first. Don't crowd it — healthy air circulation reduces disease.
Add herbs at the edges
Aromatic companions like Beet work well tucked 6–12" around the perimeter of the Kohlrabi planting.
Watch for height conflicts
Place taller companions (sunflowers, corn) on the north side of the bed so they don't shade Kohlrabi. Low-growing herbs and flowers can go anywhere in the bed.
Keep incompatible plants a bed away
Tomato and Pepper should be planted in a separate bed — ideally 3+ feet away — to prevent root exudate and pest crossover.
Plan a companion bed for Kohlrabi
Use the interactive planner to drag Kohlrabi and its companions onto a canvas, see spacing footprints, and catch conflicts before you plant.
Frequently Asked Questions
What are the best companion plants for Kohlrabi?
The best companion plants for Kohlrabi are Beet, Onion, Cucumber, Herb. These plants either deter pests, attract beneficial insects, or improve growing conditions when planted nearby.
What should you not plant near Kohlrabi?
Avoid planting Kohlrabi near Tomato, Pepper, Strawberry. These plants can compete for nutrients, inhibit growth, or attract shared pests.
Can you plant Kohlrabi in a raised bed with companions?
Yes — raised beds are ideal for companion planting because you control exact spacing and layout. Use the square-foot method to place Kohlrabi alongside its best companions within the same bed.
What plants benefit from being near Kohlrabi?
Beet all benefit from proximity to Kohlrabi.
How far apart should I plant Kohlrabi and its companions?
Give Kohlrabi its full 6" spacing. Plant compact companions like herbs 6–12" away at the bed edge, and taller companions (sunflowers, corn) where they won't shade the main crop. In raised beds, use the square-foot grid method for precise spacing.
Does companion planting actually work for Kohlrabi?
Research supports several companion planting mechanisms: aromatic herbs like basil can reduce aphid populations near tomatoes; marigolds release thiophene compounds that deter nematodes; and flowers attract parasitic wasps that control caterpillars. Results vary by garden, but most gardeners see measurable pest reduction within one season.
Want the full Kohlrabi growing guide?
Spacing, planting dates by ZIP code, seed saving tips, and more.