When to plant Onion in Eustis, FL
Eustis's climate puts the Onion spring window between January 22 and February 12. aim for a steady week of warm soil before planting. A second sowing from October 16 to October 30 extends the harvest into fall.
When to Plant Onion in Eustis, 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.
Eustis, Florida is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 11, giving you a growing season of approximately 302 days.
At an elevation of 130 feet, Lake County receives approximately 56.1 inches of rainfall annually with predominantly sand soil. Summer highs average 97°F, so Onion may need afternoon shade and extra watering during peak heat. 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.
Eustis Soil Profile
Soil Type
Sand
Soil pH
5.1-5.7
Drainage
Well Drained
Monthly Watering Guide for Onion
Onion needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Onion Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.7" | 0" | ❄️ Dormant |
| Feb | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Mar | 4.3" | 3.3" | 1" | 💧 Light watering |
| Apr | 4.3" | 2.6" | 1.7" | 💧 Light watering |
| May | 4.3" | 3.1" | 1.2" | 💧 Light watering |
| Jun | 4.3" | 6.8" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 8.4" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 9" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 8.2" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 2.2" | 2.1" | 💧 Light watering |
| Dec | 4.3" | 2.5" | 1.8" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Lake County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Onion Planting Timeline — Eustis, FL
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 15 | Jan 15 – Jan 29 |
| Transplant Outdoors | February 12 | Feb 12 – Feb 26 |
| Direct Sow | January 22 | Jan 22 – Feb 12 |
| Harvest | May 14 | May 14 – Jul 2 |
| Fall Sowing | October 16 | Oct 16 – Oct 30 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| 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
302 days in Lake County
Growing Tips for Eustis
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
When should I plant Onion in Eustis, FL?
In Eustis, FL, plant Onion after the last frost (around February 12) and before the first frost (around December 11). Best results when soil holds above 50°F.
What growing zone is Eustis, FL for Onion?
Eustis sits in USDA Zone 9b. Onion grows reliably in zones 3a through 10b, so it's a good fit here.
Can Onion grow in Eustis's climate?
Yes — Onion grows well in Eustis's temperate climate. Eustis averages a 303-day frost-free season, with last frost around February 12 and first frost around December 11.
Your Lake County Garden Planner — Free
A 22-page printable planner built for Lake 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.