When to plant Onion in Gulf County, FL
In Zone 9b (Gulf County), direct-sow Onion between February 4 and February 25 for spring, after the February 25 last-frost mark. A second sowing from October 3 to October 17 extends the harvest into fall.
When to Plant Onion in Gulf County, FL
Onions are a fundamental kitchen staple available in yellow, white, and red varieties. Choose long-day, short-day, or intermediate types based on your latitude.
Gulf County, Florida is in USDA Zone 9b. The average last spring frost is February 25 and the first fall frost is November 28, giving you a growing season of approximately 276 days.
At an elevation of 313 feet, Gulf County receives approximately 51.7 inches of rainfall annually with predominantly sand soil. Summer highs average 92°F, providing good warmth for Onion during the growing season. Sandy soil warms quickly in spring — great for early planting — but Onion will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Onion root diseases.
Gulf County Soil Profile
Soil Type
Sand
Soil pH
6.0-7.0
Drainage
Well Drained
Onion Planting Timeline — Gulf County, FL
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 28 | Jan 28 – Feb 11 |
| Transplant Outdoors | February 25 | Feb 25 – Mar 11 |
| Direct Sow | February 4 | Feb 4 – Feb 25 |
| Harvest | May 27 | May 27 – Jul 15 |
| Fall Sowing | October 3 | Oct 3 – Oct 17 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
90–120 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 9b
📆 Growing Season
276 days in Gulf County
Growing Tips for Gulf County
Start seeds indoors 8-10 weeks before transplanting. Match day-length type to your latitude. Stop watering when tops begin to fall over and cure bulbs for 2-3 weeks before storage.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Onion in Other Locations
Frequently Asked Questions
When should I plant Onion in Gulf County, FL?
Gulf County is in Zone 9b with an average last frost of February 25. Plan your Onion planting based on this frost date — see the calendar above for exact timing.
What planting zone is Gulf County, FL?
Gulf County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 25 and first fall frost is November 28.
When should I plant Onion in Gulf County, FL?
In Gulf County, FL, plant Onion after the last frost (around February 25) and before the first frost (around November 28). Best results when soil holds above 50°F.
What growing zone is Gulf County, FL for Onion?
Gulf County sits in USDA Zone 9b. Onion grows reliably in zones 3a through 10b, so it's a good fit here.
Can Onion grow in Gulf County's climate?
Yes — Onion grows well in Gulf County's temperate climate. Gulf County averages a 277-day frost-free season, with last frost around February 25 and first frost around November 28.
Your Gulf County Garden Planner — Free
A 22-page printable planner built for Gulf County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.