When to Plant Echinacea in Greene County, IN
Echinacea (purple coneflower) is a native prairie perennial valued for its immune-supporting properties and beautiful daisy-like flowers that attract pollinators.
Greene County, Indiana is in USDA Zone 6a. The average last spring frost is April 15 and the first fall frost is October 21, giving you a growing season of approximately 189 days.
At an elevation of 1,023 feet, Greene County receives approximately 39 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Echinacea during the growing season.
Greene County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-7.1
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
Echinacea Planting Timeline — Greene County, IN
Echinacea Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 22 | Apr 22 – May 6 |
| Harvest | August 26 | Aug 26 – Nov 4 |
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 | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Low — drought tolerant
Days to Maturity
120–180 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
189 days
Growing Tips for Greene County
Start seeds indoors 8-10 weeks before last frost or direct sow in fall for spring germination. Seeds need cold stratification. Deadhead to prolong blooming or leave seed heads for birds.
Companion Planting
Good Companions
Level Up Your Garden
Echinacea in Other Locations
Frequently Asked Questions
When should I plant Echinacea in Greene County, IN?
Greene County is in Zone 6a with an average last frost of April 15. Plan your Echinacea planting based on this frost date — see the calendar above for exact timing.
What planting zone is Greene County, IN?
Greene County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 15 and first fall frost is October 21.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Greene County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.