Growing Bok Choy in Zone 9B

Bok Choy is a crisp, fast-growing Asian green that thrives in cool weather. Baby bok choy varieties can be ready in just 30 days, making it ideal for spring and fall gaps in the garden.

Zone 9B has a very long growing season with mild winters. Many crops can be grown nearly year-round with successive plantings.

Top Growing Tips

• Sow indoors 4 weeks before last frost or direct sow in early spring
• Prefers soil temperatures between 45-75°F — bolts quickly in heat
• Space standard varieties 6-9 inches apart; baby types can be closer
• Harvest whole heads when compact, or cut outer leaves for partial harvest
• Fall sowing is often more successful — cooler temps prevent bolting

Companion Planting

Good companions: beets, onions, celery, aromatic herbs

Avoid planting near: strawberries, pole beans, tomatoes

Harvest Timeline

30-45 days (baby) to 50-70 days (full size)

About Zone 9B

USDA Hardiness Zone 9B has an average last spring frost around Feb 15 and first fall frost around Dec 10. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.