Blog

When to Plant Echinacea in Sevier County, AR

Echinacea (purple coneflower) is a native prairie perennial valued for its immune-supporting properties and beautiful daisy-like flowers that attract pollinators.

Sevier County, Arkansas is in USDA Zone 7b. The average last spring frost is March 25 and the first fall frost is November 6, giving you a growing season of approximately 226 days.

At an elevation of 845 feet, Sevier County receives approximately 49.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Echinacea during the growing season.

Sevier County, AR (Zone 7b) Long season
226 days
Last Spring Frost March 25
226 growing days
First Fall Frost November 6

Sevier County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 23 🍅 Harvest: Jul 27 – Nov 2
Recommended (50%) ✗ May not fit
Transplant: Apr 1 🍅 Harvest: Aug 5 – Nov 11
Safe Start (90%) ✗ May not fit
Transplant: Apr 22 🍅 Harvest: Aug 26 – Dec 2

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

Plant needs
0.5″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Echinacea needs ~2,512 GDD — county provides 3,785 GDD Excellent fit

Echinacea Planting Timeline โ€” Sevier County, AR

Echinacea Planting Calendar

Activity When Date Range
Transplant Outdoors April 1 Apr 1 โ€“ Apr 15
Harvest August 5 Aug 5 โ€“ Nov 11

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May โ€”
June โ€”
July โ€”
August Harvest
September Harvest
October Harvest
November Harvest
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

120โ€“180 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

226 days

Growing Tips for Sevier 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

Frequently Asked Questions

When should I plant Echinacea in Sevier County, AR?

Sevier County is in Zone 7b with an average last frost of March 25. Plan your Echinacea planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Sevier County, AR?

Sevier County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 25 and first fall frost is November 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Sevier County gardeners in Zone 7b 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.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Sevier County, AR. Local conditions may vary. Last updated: April 2026.