When to Plant Parsley in Randolph County, IL
Parsley is a biennial herb available in flat-leaf (Italian) and curly varieties. It is a nutritional powerhouse rich in vitamins C and K and adds fresh flavor to countless dishes.
Randolph County, Illinois is in USDA Zone 6a. The average last spring frost is April 11 and the first fall frost is October 20, giving you a growing season of approximately 192 days.
At an elevation of 501 feet, Randolph County receives approximately 32.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Parsley during the growing season.
Randolph County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-6.8
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Parsley Planting Timeline — Randolph County, IL
Parsley Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 7 | Mar 7 – Mar 21 |
| Transplant Outdoors | April 4 | Apr 4 – Apr 18 |
| Direct Sow | March 28 | Mar 28 – Apr 18 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
| Harvest | June 6 | Jun 6 – Aug 8 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
60–80 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
192 days
Growing Tips for Randolph County
Start seeds indoors 6-8 weeks before last frost. Soak seeds overnight as germination is slow. Harvest outer stems first to keep plants productive. Parsley attracts swallowtail butterflies.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Parsley in Other Locations
Frequently Asked Questions
When should I plant Parsley in Randolph County, IL?
Randolph County is in Zone 6a with an average last frost of April 11. Plan your Parsley planting based on this frost date — see the calendar above for exact timing.
What planting zone is Randolph County, IL?
Randolph County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 11 and first fall frost is October 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Randolph County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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