When to Plant Fennel in Zone 4
In USDA zone 4, plant outdoors May 1 to July 30, and expect your first harvest around July 30.
Fennel planting calendar for USDA Zone 4
Direct sow
May 1
Projected first harvest
Jul 30
Fennel is ready to harvest in about 90 days. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for fennel
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and fennel need about 90 days to mature.
Varieties to grow
1 variety of fennel in the HomeSown library. Tap any for its full grow guide.
Common problems with fennel
What to watch for, with identification and treatment for each
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