When to Plant Celery in Illinois
Illinois spans USDA hardiness 5a to 7a (zones 5a to 7a on this page). Plant celery by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a
Celery planting calendar for Illinois, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Start seeds indoors
Mar 10
Transplant outdoors
Apr 21
Projected first harvest
Aug 9
Most celery mature in about 100 to 110 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Celery planting calendar for Illinois, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Start seeds indoors
Mar 5
Transplant outdoors
Apr 16
Projected first harvest
Aug 4
Most celery mature in about 100 to 110 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Celery planting calendar for Illinois, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Feb 28
Transplant outdoors
Apr 11
Projected first harvest
Jul 30
Most celery mature in about 100 to 110 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Celery planting calendar for Illinois, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Feb 23
Transplant outdoors
Apr 6
Projected first harvest
Jul 25
Most celery mature in about 100 to 110 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Celery planting calendar for Illinois, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Feb 18
Transplant outdoors
Apr 1
Projected first harvest
Jul 20
Most celery mature in about 100 to 110 days depending on the variety. Full zone 7 guide (both 7a and 7b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
2 varieties of celery in the HomeSown library. Tap any for its full grow guide.
Common problems with celery
What to watch for, with identification and treatment for each
🌱 Grow celery with a calendar built for your exact yard
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