How to Grow Joi Choi
Brassica rapa var. chinensis
Your complete guide to growing Joi Choi.
When to Plant Joi Choi
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | June – July | July – September |
| Zone 2 | — | May – July | July – September |
| Zone 3 | — | May – June | June – October |
| Zone 4 | — | April – June | June – October |
| Zone 5 | — | April – May | June – November |
| Zone 6 | — | April – May | May – November |
| Zone 7 | — | March – May | May – November |
| Zone 8 | — | March – April | April – December |
| Zone 9 | — | February – March | March – December |
| Zone 10 | — | January – March | March – December |
| Zone 11 | — | January – February | February – December |
| Zone 12 | — | January – February | February – December |
| Zone 13 | — | January – February | February – December |
Companion Plants for Joi Choi
✓ Good companions
Deep roots don't compete with shallow lettuce roots, helps break up soil
Repels aphids and other pests that commonly attack lettuce
Attracts beneficial insects like ladybugs and parasitic wasps
Natural pest deterrent against aphids, slugs, and cabbage worms
Deters aphids, whiteflies, and nematodes while attracting beneficial insects
Acts as trap crop for aphids and cucumber beetles
Attracts beneficial insects and doesn't compete for root space
Quick harvest allows space for lettuce expansion, breaks up compacted soil
Similar growing requirements and harvest times, efficient space usage
✗ Keep away from
Heavy feeder that competes for nitrogen and space
Tall growth creates excessive shade and competes for nutrients
Nutrition Facts
Per 100g serving (USDA FoodData Central)
