Companion Planting: Kohlrabi

Brassica oleracea (Gongylodes group)

Spacing: 4 per square foot. Mature height: 1-1.5 ft.

Plant these nearby

• Beet: Compatible nutrient needs; common bed-sharing pair.

Keep these apart

• Tomato: Widely repeated in gardening guides that kohlrabi and tomato stunt each other's growth when planted close together, but no extension or research source was found testing this specific claim — treat it as folklore, not measured evidence.
• Bush Beans: Widely repeated in gardening guides that kohlrabi and beans stunt each other's growth when planted close together, but no extension or research source was found testing this specific claim — treat it as folklore, not measured evidence.

Common pairings, answered directly

Can I plant kohlrabi next to beet?

Yes. Compatible nutrient needs; common bed-sharing pair.

Can I plant kohlrabi next to tomato?

Better not to. Widely repeated in gardening guides that kohlrabi and tomato stunt each other's growth when planted close together, but no extension or research source was found testing this specific claim — treat it as folklore, not measured evidence.

Can I plant kohlrabi next to bush beans?

Better not to. Widely repeated in gardening guides that kohlrabi and beans stunt each other's growth when planted close together, but no extension or research source was found testing this specific claim — treat it as folklore, not measured evidence.

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Companion planting for Kohlrabi: which plants to grow next to it, which to keep apart, and the reason behind each pairing.

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