When to plant Cosmos in Monroe County County,
Plant Cosmos in Monroe County County from February 21 to March 14 in spring. Monroe County County sits in USDA Zone 8b, with last frost around March 14 and first frost on November 14.
When to Plant Cosmos in Monroe County, AL
June in Monroe County, Alabama — your action list
Here's what deserves your attention in Monroe County, Alabama this month. Everything below is tailored to Zone 8b and timed around your local frost dates.
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Harvest cosmos as they ripen
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
Get ahead of July
- First harvests: cosmos
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.
Monroe County, Alabama is in USDA Zone 8b. The average last spring frost is March 14 and the first fall frost is November 14, giving you a growing season of approximately 245 days.
At an elevation of 177 feet, Monroe County receives approximately 51.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°F, so Cosmos may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Cosmos, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cosmos root diseases.
Monroe County Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.3
Drainage
Well Drained
Cosmos 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 Monroe County
How your county's soil matches Cosmos's growing requirements.
Soil pH
Your soil pH (5.6–6.3) is more acidic than Cosmos prefers (6.0–8.0). Add garden lime to raise pH.
Soil Texture
The clay loam soil in Monroe County is excellent for Cosmos — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.8%). Annual compost additions will help Cosmos.
How to Plant Cosmos
Succession Planting Cosmos
Sow every 6.9 weeks. Last sowing by Aug 16 to harvest before frost.
Cosmos Water Budget
Monthly Watering Guide for Cosmos
Cosmos 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 | Cosmos Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.7" | 0" | ❄️ Dormant |
| Feb | — | 3.6" | 0" | ❄️ Dormant |
| Mar | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 3.7" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 4" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 4.7" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 5.3" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.3" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Monroe County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cosmos 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.
Cosmos Planting Timeline — Monroe County, AL
Cosmos Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 14 | Feb 14 – Feb 28 |
| Transplant Outdoors | February 21 | Feb 21 – Mar 7 |
| Direct Sow | February 21 | Feb 21 – Mar 14 |
| Bloom | May 2 | May 2 – Oct 3 |
Plant 0.3" deep · 12" apart · Rows 18" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Bloom |
| June | Bloom |
| 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
60–90 days
🧪 Soil pH
Needs 6–8 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8b
📆 Growing Season
245 days in Monroe County
Growing Tips for Cosmos in Monroe County
Direct sow Cosmos outdoors after March 14 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 Cosmos. Avoid tilling when soil is wet to prevent compaction.
With summer highs reaching 96°F in Monroe County, provide afternoon shade for Cosmos and water deeply in the morning.
Common pests for Cosmos in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
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 Monroe County, AL?
Monroe County is in Zone 8b with an average last frost of March 14. Plan your Cosmos planting based on this frost date — see the calendar above for exact timing.
What planting zone is Monroe County, AL?
Monroe County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 14 and first fall frost is November 14.
When should I plant Cosmos in Monroe County, ?
In Monroe County, , plant Cosmos after the last frost (around March 14) and before the first frost (around November 14). Best results when soil holds above 50°F.
What growing zone is Monroe County, for Cosmos?
Monroe County sits in USDA Zone 8b. Cosmos grows reliably in zones 2a through 11b, so it's a good fit here.
Can Cosmos grow in Monroe County's climate?
Yes — Cosmos grows well in Monroe County's temperate climate. Monroe County averages a 245-day frost-free season, with last frost around March 14 and first frost around November 14.
Your Monroe County Garden Planner — Free
A 22-page printable planner built for Monroe County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.