When to Plant Green Beans in Washington County, IL
Green beans are a warm-season staple available as bush or pole types. Bush beans produce a concentrated harvest while pole beans provide a longer picking season.
Washington County, Illinois is in USDA Zone 6a. The average last spring frost is April 9 and the first fall frost is October 20, giving you a growing season of approximately 194 days.
At an elevation of 1,126 feet, Washington County receives approximately 33.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Green Beans during the growing season.
Washington County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-7.2
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.
Soil Compatibility in Washington County
How your county's soil matches Green Beans's growing requirements.
Soil pH
Your soil pH (5.9–7.2) overlaps with Green Beans's range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Washington County is excellent for Green Beans — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.9%). Annual compost additions will help Green Beans.
How to Plant Green Beans
Succession Planting Green Beans
Sow every 5.7 weeks. Last sowing by Aug 16 to harvest before frost.
Plant Water Budget
Green Beans Planting Timeline — Washington County, IL
Green Beans Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 16 | Apr 16 – May 7 |
| Harvest | June 11 | Jun 11 – Aug 6 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.9"/week · Only during dry spells
📅 Days to Maturity
50–65 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 6a
📆 Growing Season
194 days in Washington County
Growing Tips for Green Beans in Washington County
Direct sow Green Beans outdoors after April 09 in Washington County when soil has warmed and frost danger has passed.
Common pests for Green Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow after last frost when soil is warm. Provide sturdy supports for pole varieties. Pick beans regularly when young and tender to encourage continued production.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Avoid harvesting during damp weather. Isolate 25 ft between varieties.
Green Beans in Other Locations
Frequently Asked Questions
When should I plant Green Beans in Washington County, IL?
Washington County is in Zone 6a with an average last frost of April 9. Plan your Green Beans planting based on this frost date — see the calendar above for exact timing.
What planting zone is Washington County, IL?
Washington County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 9 and first fall frost is October 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Washington County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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