Can I plant komatsuna next to radish?

Yes. Radish (including the daikon form) is a documented trap crop for flea beetles, which prefer its mustard oils over other brassicas and can be sacrificed or pulled once infested: the same research cited on the radish page.

Companion Planting & Garden Value: Komatsuna

Brassica rapa var. perviridis

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

Plant these nearby

Radish: Radish (including the daikon form) is a documented trap crop for flea beetles, which prefer its mustard oils over other brassicas and can be sacrificed or pulled once infested: the same research cited on the radish page. (source)

Keep these apart

Nothing it needs to be kept away from.

Common pairings, answered directly

Can I plant komatsuna next to radish?: Yes. Radish (including the daikon form) is a documented trap crop for flea beetles, which prefer its mustard oils over other brassicas and can be sacrificed or pulled once infested: the same research cited on the radish page.

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

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