When to Plant Choy Sum in Zone 9
In USDA zone 9, plant outdoors February 15 to April 1, and expect your first harvest around April 1. Zone 9 also has a fall planting window opening around October 6.
Choy Sum planting calendar for USDA Zone 9
spring planting
Direct sow
Feb 15
Projected first harvest
Apr 1
fall planting
Direct sow
Oct 6
Projected first harvest
Nov 20
spring planting
fall planting
Choy Sum is ready to harvest in about 45 days. Dates use USDA zone 9a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 9 means for choy sum
Average last spring frost
March 1
Average first fall frost
December 1
Those two dates are what set the schedule above. Zone 9 gives you roughly 275 frost-free days, and choy sum need about 45 days to mature.
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
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