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When to Plant Echinacea in Piscataquis County, ME

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

Piscataquis County, Maine is in USDA Zone 3b. The average last spring frost is May 19 and the first fall frost is September 28, giving you a growing season of approximately 132 days.

At an elevation of 727 feet, Piscataquis County receives approximately 49.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78ยฐF, so choose short-season varieties of Echinacea to ensure they mature before fall.

Piscataquis County, ME (Zone 3b) Short season
132 days
Last Spring Frost May 19
132 growing days
First Fall Frost September 28

Piscataquis County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 22 🍅 Harvest: Sep 25 – Sep 25
Recommended (50%) ✗ May not fit
Transplant: May 26 🍅 Harvest: Sep 29 – Sep 29
Safe Start (90%) ✓ Fits season (5 days to spare)
Transplant: Jun 8 🍅 Harvest: Oct 12 – Oct 12

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
1.6″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Echinacea needs ~1,275 GDD — county provides 1,122 GDD May not mature

Echinacea Planting Timeline โ€” Piscataquis County, ME

Echinacea Planting Calendar

Activity When Date Range
Transplant Outdoors May 26 May 26 โ€“ Jun 9
Harvest September 29 Sep 29

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June Transplant Outdoors
July โ€”
August โ€”
September Harvest
October โ€”
November โ€”
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 3b

Growing Season

132 days

Growing Tips for Piscataquis 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 Piscataquis County, ME?

Piscataquis County is in Zone 3b with an average last frost of May 19. Plan your Echinacea planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Piscataquis County, ME?

Piscataquis County, Maine is in USDA Hardiness Zone 3b. The average last spring frost is May 19 and first fall frost is September 28.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Piscataquis County gardeners in Zone 3b 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 Piscataquis County, ME. Local conditions may vary. Last updated: April 2026.