Bok Choy in Zone 4a

Brassica rapa subsp. chinensis

Start indoors	Apr 10–Apr 17
Direct sow / transplant outside	May 15–May 22
Estimated harvest	~50 days after planting

Spacing: 1 per square foot (square-foot-gardening spacing).

Good companions

Carrot — Non-competing root/leaf pairing.
Onion — Onion scent may help mask bok choy from pests.

Where to buy bok choy seeds

Botanical Interests
True Leaf Market
Burpee
High Mowing Organic Seeds

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See it growing

Search YouTube for "growing bok choy" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)

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