When to Plant Choy Sum in Zone 3
In USDA zone 3, plant outdoors May 16 to June 30, and expect your first harvest around June 30. Zone 3 also has a fall planting window opening around July 16.
Choy Sum planting calendar for USDA Zone 3
spring planting
Direct sow
May 16
Projected first harvest
Jun 30
fall planting
Direct sow
Jul 16
Projected first harvest
Aug 30
spring planting
fall planting
Choy Sum is ready to harvest in about 45 days. Dates use USDA zone 3a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 3 means for choy sum
Average last spring frost
May 30
Average first fall frost
September 10
Those two dates are what set the schedule above. Zone 3 gives you roughly 103 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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