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When to Plant Echinacea in Monroe County, MS

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

Monroe County, Mississippi is in USDA Zone 7b. The average last spring frost is March 23 and the first fall frost is November 6, giving you a growing season of approximately 228 days.

At an elevation of 448 feet, Monroe County receives approximately 54.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88ยฐF, providing good warmth for Echinacea during the growing season. Clay soil retains moisture well for Echinacea, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Echinacea root diseases.

Monroe County, MS (Zone 7b) Long season
228 days
Last Spring Frost March 23
228 growing days
First Fall Frost November 6

Monroe County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 21 🍅 Harvest: Jul 25 – Oct 31
Recommended (50%) ✗ May not fit
Transplant: Mar 30 🍅 Harvest: Aug 3 – Nov 9
Safe Start (90%) ✗ May not fit
Transplant: Apr 20 🍅 Harvest: Aug 24 – Nov 30

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 Monroe County

How your county's soil matches Echinacea's growing requirements.

Soil pH

Your soil pH (5.4โ€“6.7) overlaps with Echinacea's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The clay loam soil in Monroe County is excellent for Echinacea โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Echinacea prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Echinacea.

How to Plant Echinacea

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Plant Water Budget

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

Monthly Watering Guide for Echinacea

Echinacea needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Echinacea Needs Rainfall You Supplement Action
Jan โ€” 4.4" 0" โ„๏ธ Dormant
Feb โ€” 3.8" 0" โ„๏ธ Dormant
Mar 2.2" 6" 0" โœ… Rainfall sufficient
Apr 2.2" 4.7" 0" โœ… Rainfall sufficient
May 2.2" 4.4" 0" โœ… Rainfall sufficient
Jun 2.2" 4.2" 0" โœ… Rainfall sufficient
Jul 2.2" 5.2" 0" โœ… Rainfall sufficient
Aug 2.2" 4.6" 0" โœ… Rainfall sufficient
Sep 2.2" 4.7" 0" โœ… Rainfall sufficient
Oct 2.2" 3.5" 0" โœ… Rainfall sufficient
Nov 2.2" 3.9" 0" โœ… Rainfall sufficient
Dec โ€” 4.8" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Monroe County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Echinacea Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Echinacea needs ~2,400 GDD — county provides 3,648 GDD Excellent fit

Echinacea Planting Timeline โ€” Monroe County, MS

Echinacea Planting Calendar

Activity When Date Range
Transplant Outdoors March 30 Mar 30 โ€“ Apr 13
Harvest August 3 Aug 3 โ€“ Nov 9

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

120โ€“180 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

228 days in Monroe County

Growing Tips for Echinacea in Monroe County

Direct sow Echinacea outdoors after March 23 in Monroe County when soil has warmed and frost danger has passed.

With Monroe County's clay soil (26% clay), work in 3-4 inches of compost before planting Echinacea. Avoid tilling when soil is wet to prevent compaction.

Common pests for Echinacea in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Echinacea in Monroe County, MS?

Monroe County is in Zone 7b with an average last frost of March 23. Plan your Echinacea planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Monroe County, MS?

Monroe County, Mississippi is in USDA Hardiness Zone 7b. The average last spring frost is March 23 and first fall frost is November 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Monroe County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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