When to Plant Italian Oregano in Illinois
Illinois spans USDA hardiness 5a to 7a (zones 5a to 7a on this page). Plant italian oregano 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
Italian Oregano planting calendar for Illinois, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Start seeds indoors
Mar 24
Transplant outdoors
May 19
Projected first harvest
Aug 7
Italian Oregano is ready to harvest in about 80 days. Full zone 5 guide (both 5a and 5b) →
Italian Oregano planting calendar for Illinois, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Start seeds indoors
Mar 19
Transplant outdoors
May 14
Projected first harvest
Aug 2
Italian Oregano is ready to harvest in about 80 days. Full zone 5 guide (both 5a and 5b) →
Italian Oregano planting calendar for Illinois, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Mar 14
Transplant outdoors
May 9
Projected first harvest
Jul 28
Italian Oregano is ready to harvest in about 80 days. Full zone 6 guide (both 6a and 6b) →
Italian Oregano planting calendar for Illinois, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Mar 9
Transplant outdoors
May 4
Projected first harvest
Jul 23
Italian Oregano is ready to harvest in about 80 days. Full zone 6 guide (both 6a and 6b) →
Italian Oregano planting calendar for Illinois, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Mar 4
Transplant outdoors
Apr 29
Projected first harvest
Jul 18
Italian Oregano is ready to harvest in about 80 days. 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
1 variety of italian oregano in the HomeSown library. Tap any for its full grow guide.
Common problems with italian oregano
What to watch for, with identification and treatment for each
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