When to Plant Choy Sum in Zone 10
In USDA zone 10a, plant outdoors January 16 to March 2, and expect your first harvest around March 2. Zone 10 also has a fall planting window opening around November 4. (10a shown here — see 10a and 10b dates separately below.)
Choy Sum planting calendar for USDA Zone 10a
Average last spring frost
January 30
Average first fall frost
December 30
spring planting
Direct sow
Jan 16
Projected first harvest
Mar 2
fall planting
Direct sow
Nov 4
Projected first harvest
Dec 19
spring planting
fall planting
Choy Sum is ready to harvest in about 45 days, needing roughly 334 frost-free days in zone 10a.
Choy Sum planting calendar for USDA Zone 10b
Average last spring frost
January 30
Average first fall frost
December 30
spring planting
Direct sow
Jan 16
Projected first harvest
Mar 2
fall planting
Direct sow
Nov 4
Projected first harvest
Dec 19
spring planting
fall planting
Choy Sum is ready to harvest in about 45 days, needing roughly 334 frost-free days in zone 10b.
Not sure whether you're in 10a or 10b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of choy sum in the HomeSown library. Tap any for its full grow guide.
Common problems with choy sum
What to watch for, with identification and treatment for each
🌱 Grow choy sum with a calendar built for your exact yard
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →