When to Plant Arugula in Zone 4
In USDA zone 4a, plant outdoors May 1 to June 5, and expect your first harvest around June 5. Zone 4 also has a fall planting window opening around August 2. (4a shown here — see 4a and 4b dates separately below.)
Arugula planting calendar for USDA Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
spring planting
Direct sow
May 1
Projected first harvest
Jun 5
fall planting
Direct sow
Aug 2
Projected first harvest
Sep 6
spring planting
fall planting
Arugula is ready to harvest in about 35 days, needing roughly 128 frost-free days in zone 4a.
Arugula planting calendar for USDA Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
spring planting
Direct sow
Apr 26
Projected first harvest
May 31
fall planting
Direct sow
Aug 7
Projected first harvest
Sep 11
spring planting
fall planting
Arugula is ready to harvest in about 35 days, needing roughly 138 frost-free days in zone 4b.
Not sure whether you're in 4a or 4b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of arugula in the HomeSown library. Tap any for its full grow guide.
Common problems with arugula
What to watch for, with identification and treatment for each
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