When to plant Thyme in Saline County, IL
Plant Thyme in Saline County, between April 15 and April 29 — the only viable window. Zone 7a's short season (199 frost-free days) rules out a fall crop.
When to Plant Thyme in Saline County, IL
Thyme is a low-growing perennial herb with tiny, aromatic leaves and a warm, earthy flavor. It is one of the most versatile culinary and medicinal herbs.
Saline County, Illinois is in USDA Zone 7a. The average last spring frost is April 8 and the first fall frost is October 24, giving you a growing season of approximately 199 days.
At an elevation of 748 feet, Saline County receives approximately 41.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Thyme during the growing season.
Saline County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Thyme Planting Timeline — Saline County, IL
Thyme Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 15 | Apr 15 – Apr 29 |
| Harvest | June 24 | Jun 24 – Aug 26 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–8 · Your soil: N/A
🗺️ USDA Zone
Zone 7a
📆 Growing Season
199 days in Saline County
Growing Tips for Saline County
Start from seed, cuttings, or divisions. Plant in well-drained, lean soil. Prune lightly after flowering. Replace plants every 3-4 years when they become woody.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Thyme in Other Locations
Frequently Asked Questions
When should I plant Thyme in Saline County, IL?
Saline County is in Zone 7a with an average last frost of April 8. Plan your Thyme planting based on this frost date — see the calendar above for exact timing.
What planting zone is Saline County, IL?
Saline County, Illinois is in USDA Hardiness Zone 7a. The average last spring frost is April 8 and first fall frost is October 24.
When should I plant Thyme in Saline County, IL?
In Saline County, IL, plant Thyme after the last frost (around April 8) and before the first frost (around October 24). Best results when soil holds above 50°F.
What growing zone is Saline County, IL for Thyme?
Saline County sits in USDA Zone 7a. Thyme grows reliably in zones 4a through 9b, so it's a good fit here.
Can Thyme grow in Saline County's climate?
Yes — Thyme grows well in Saline County's temperate climate. Saline County averages a 199-day frost-free season, with last frost around April 8 and first frost around October 24.
Your Saline County Garden Planner — Free
A 22-page printable planner built for Saline County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.