When to Plant Rue in Champaign County, IL
Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.
Champaign County, Illinois is in USDA Zone 5b. The average last spring frost is April 14 and the first fall frost is October 19, giving you a growing season of approximately 188 days.
At an elevation of 1,215 feet, Champaign County receives approximately 38.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Rue during the growing season.
Champaign County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-6.8
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
Rue Planting Timeline — Champaign County, IL
Rue Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 21 | Apr 21 – May 5 |
| Harvest | June 30 | Jun 30 – Sep 1 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Low — drought tolerant
Days to Maturity
70–90 days
Soil pH
6 – 7.5
USDA Zone
Zone 5b
Growing Season
188 days
Growing Tips for Champaign County
Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Rue in Other Locations
Frequently Asked Questions
When should I plant Rue in Champaign County, IL?
Champaign County is in Zone 5b with an average last frost of April 14. Plan your Rue planting based on this frost date — see the calendar above for exact timing.
What planting zone is Champaign County, IL?
Champaign County, Illinois is in USDA Hardiness Zone 5b. The average last spring frost is April 14 and first fall frost is October 19.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Champaign County gardeners in Zone 5b organize planting dates, track what's growing, and never miss a planting window.
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