When to plant Cosmos in Steinhatchee, FL
The best window to plant Cosmos in Steinhatchee, is February 6–February 27, when soil warms to 50°F. Last frost typically hits March 6; first frost November 23.
When to Plant Cosmos in Steinhatchee, FL
What to do in July
July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Taylor County, Florida.
-
It's harvest week for cosmos
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
Get ahead of August
- 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.
Steinhatchee, Florida is in USDA Zone 9a. The average last spring frost is March 6 and the first fall frost is November 23, giving you a growing season of approximately 262 days.
At an elevation of 344 feet, Taylor County receives approximately 59.1 inches of rainfall annually with predominantly sand soil. Summer highs average 94°F, providing good warmth for Cosmos during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cosmos will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cosmos root diseases.
Steinhatchee Soil Profile
Soil Type
Sand
Soil pH
5.1-6.1
Drainage
Well Drained
Monthly Watering Guide for Cosmos
Cosmos needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Cosmos Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.9" | 0" | ❄️ Dormant |
| Feb | — | 3.1" | 0" | ❄️ Dormant |
| Mar | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Apr | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| May | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 9.9" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 7.5" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 5.6" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 2.3" | 2" | 💧 Light watering |
| Dec | — | 2.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Taylor County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cosmos Planting Timeline — Steinhatchee, FL
Cosmos Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 6 | Feb 6 – Feb 20 |
| Transplant Outdoors | February 6 | Feb 6 – Feb 20 |
| Direct Sow | February 6 | Feb 6 – Feb 27 |
| Bloom | April 17 | Apr 17 – Oct 2 |
Plant 0.3" deep · 12" apart · Rows 18" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | — |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| 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 9a
📆 Growing Season
262 days in Taylor County
Growing Tips for Steinhatchee
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
When should I plant Cosmos in Steinhatchee, FL?
In Steinhatchee, FL, plant Cosmos after the last frost (around March 6) and before the first frost (around November 23). Best results when soil holds above 50°F.
What growing zone is Steinhatchee, FL for Cosmos?
Steinhatchee sits in USDA Zone 9a. Cosmos grows reliably in zones 2a through 11b, so it's a good fit here.
Can Cosmos grow in Steinhatchee's climate?
Yes — Cosmos grows well in Steinhatchee's temperate climate. Steinhatchee averages a 262-day frost-free season, with last frost around March 6 and first frost around November 23.
Your Taylor County Garden Planner — Free
A 22-page printable planner built for Taylor County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.