When to plant Cosmos in Androscoggin County, ME
Androscoggin County's spring Cosmos window runs May 8 through May 29. time plantings around the expected last-frost window for best survival.
When to Plant Cosmos in Androscoggin County, ME
Cosmos (Cosmos bipinnatus) is an airy, feathery-foliaged cottage garden annual from Mexico that thrives on neglect. It produces delicate daisy-like blooms in shades of pink, white, and magenta from midsummer until frost. Cosmos is a prolific self-sower — once established in a garden it often returns year after year without replanting. Excellent habitat plant for beneficial insects.
Androscoggin County, Maine is in USDA Zone 5b. The average last spring frost is May 8 and the first fall frost is October 6, giving you a growing season of approximately 151 days.
At an elevation of 1,087 feet, Androscoggin County receives approximately 40.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Cosmos during the growing season.
Androscoggin County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Cosmos Planting Timeline — Androscoggin County, ME
Cosmos Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 10 | Apr 10 – Apr 24 |
| Transplant Outdoors | May 8 | May 8 – May 22 |
| Direct Sow | May 8 | May 8 – May 29 |
| Bloom | July 17 | Jul 17 – Oct 16 |
Plant 0.3" deep · 12" apart · Rows 18" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| 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
Low — drought tolerant
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–8 · Your soil: N/A
🗺️ USDA Zone
Zone 5b
📆 Growing Season
151 days in Androscoggin County
Growing Tips for Androscoggin County
Direct-sow after last frost; cosmos germinates readily at 65-80°F in 7-10 days. Avoid rich soil — excess fertility produces lush foliage at the expense of blooms. Cosmos tolerates poor, dry soil exceptionally well. Pinch seedlings at 8 inches to encourage branching. Self-sows freely; allow some seed heads to mature and drop for a no-fuss perennial effect in warm climates.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Cosmos in Other Locations
Frequently Asked Questions
When should I plant Cosmos in Androscoggin County, ME?
Androscoggin County is in Zone 5b with an average last frost of May 8. Plan your Cosmos planting based on this frost date — see the calendar above for exact timing.
What planting zone is Androscoggin County, ME?
Androscoggin County, Maine is in USDA Hardiness Zone 5b. The average last spring frost is May 8 and first fall frost is October 6.
When should I plant Cosmos in Androscoggin County, ME?
In Androscoggin County, ME, plant Cosmos after the last frost (around May 8) and before the first frost (around October 6). Best results when soil holds above 50°F.
What growing zone is Androscoggin County, ME for Cosmos?
Androscoggin County sits in USDA Zone 5b. Cosmos grows reliably in zones 2a through 11b, so it's a good fit here.
Can Cosmos grow in Androscoggin County's climate?
Yes — Cosmos grows well in Androscoggin County's temperate climate. Androscoggin County averages a 151-day frost-free season, with last frost around May 8 and first frost around October 6.
Your Androscoggin County Garden Planner — Free
A 22-page printable planner built for Androscoggin County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.