When to plant Echinacea (Purple Coneflower) in Webster County County,
In Webster County County, plant Echinacea (Purple Coneflower) in spring between April 18 and May 9, once soil temps hold above 50°F. Webster County County's last frost averages April 11, so time plantings around the expected last-frost window for best survival. For a fall crop, sow between and — roughly 90 days before the first frost on October 22.
When to Plant Echinacea (Purple Coneflower) in Webster County, MO
June to-do list for Webster County, Missouri
June is a pivotal month for Webster County, Missouri gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Get echinacea (purple coneflower) seeds going inside
Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.
July prep starts now
- First harvests: echinacea (purple coneflower)
Echinacea purpurea (Purple Coneflower) is a long-lived native prairie perennial and one of the most valuable pollinator plants in North American gardens. Its distinctive daisy-like blooms — swept-back lavender-pink petals surrounding a spiny orange-brown cone — attract bees, butterflies, and goldfinches from summer into fall. Drought-tolerant once established, adaptable to average soils, and impressively long-lived; mature clumps bloom reliably for decades.
Webster County, Missouri is in USDA Zone 6b. The average last spring frost is April 11 and the first fall frost is October 22, giving you a growing season of approximately 194 days.
At an elevation of 1,274 feet, Webster County receives approximately 38.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Echinacea (Purple Coneflower) during the growing season.
Webster County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-6.6
Drainage
Well Drained
Echinacea (Purple Coneflower) 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 Webster County
How your county's soil matches Echinacea (Purple Coneflower)'s growing requirements.
Soil pH
Your soil pH (5.6–6.6) overlaps with Echinacea (Purple Coneflower)'s range (6.0–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Webster County is excellent for Echinacea (Purple Coneflower) — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Echinacea (Purple Coneflower) prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.
Organic Matter
Organic matter is moderate (2.6%). Annual compost additions will help Echinacea (Purple Coneflower).
How to Plant Echinacea (Purple Coneflower)
Succession Planting Echinacea (Purple Coneflower)
Sow every 8 weeks. Last sowing by Jul 24 to harvest before frost.
Echinacea (Purple Coneflower) Water Budget
Monthly Watering Guide for Echinacea (Purple Coneflower)
Echinacea (Purple Coneflower) 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 (Purple Coneflower) Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.6" | 0" | ❄️ Dormant |
| Feb | — | 1.5" | 0" | ❄️ Dormant |
| Mar | — | 2.8" | 0" | ❄️ Dormant |
| Apr | 2.2" | 4.2" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 5" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 4.2" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 3" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3" | 0" | ✅ Rainfall sufficient |
| Nov | — | 2.4" | 0" | ❄️ Dormant |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Webster County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Echinacea (Purple Coneflower) 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" — every day above 50°F 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 (Purple Coneflower) Planting Timeline — Webster County, MO
Echinacea (Purple Coneflower) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 7 | Feb 7 – Feb 21 |
| Transplant Outdoors | April 18 | Apr 18 – May 2 |
| Direct Sow | April 18 | Apr 18 – May 9 |
| Bloom | July 4 | Jul 4 – Oct 24 |
Plant 0.3" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | — |
| April | Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
194 days in Webster County
Growing Tips for Echinacea (Purple Coneflower) in Webster County
Direct sow Echinacea (Purple Coneflower) outdoors after April 11 in Webster County when soil has warmed and frost danger has passed.
Common pests for Echinacea (Purple Coneflower) 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 natural cold stratification. Seeds require 4–8 weeks of cold moist stratification (or fall sowing) for best germination. Transplant when night temps stay above 50°F. Full sun is essential for heavy bloom. Avoid over-fertilizing — lean soil produces more compact, floriferous plants. Deadhead for continuous bloom but leave some cones standing in fall for goldfinch seed harvest. Year 2+ plants bloom most heavily; first-year transplants may produce limited flowers. Divide congested clumps every 3–4 years in early spring.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Echinacea (Purple Coneflower) in Other Locations
Frequently Asked Questions
When should I plant Echinacea (Purple Coneflower) in Webster County, MO?
Webster County is in Zone 6b with an average last frost of April 11. Plan your Echinacea (Purple Coneflower) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Webster County, MO?
Webster County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 11 and first fall frost is October 22.
When should I plant Echinacea (Purple Coneflower) in Webster County County, ?
In Webster County County, , plant Echinacea (Purple Coneflower) after the last frost (around April 11) and before the first frost (around October 22). Best results when soil holds above 50°F.
What growing zone is Webster County County, for Echinacea (Purple Coneflower)?
Webster County County sits in USDA Zone 6b. Echinacea (Purple Coneflower) grows reliably in zones 3a through 9b, so it's a good fit here.
Can Echinacea (Purple Coneflower) grow in Webster County County's climate?
Yes — Echinacea (Purple Coneflower) grows well in Webster County County's temperate climate. Webster County County averages a 194-day frost-free season, with last frost around April 11 and first frost around October 22.
Your Webster County Garden Planner — Free
A 22-page printable planner built for Webster County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.