When to plant in Casselberry, FL
USDA Zone 10aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Casselberry, Florida — all computed from Casselberry's nearest NOAA weather station.
With only about -4 frost-free days, Casselberry has a short season — start heat-lovers indoors early, favor quick-maturing varieties, and use row cover to stretch both ends. In zone 10a, frost is a minor factor for Casselberry — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
ORLANDO EXECUTIVE AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Casselberry’s own odds, recorded at ORLANDO EXECUTIVE AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 22 | Jan 25 | Dec 31 | Dec 12 | Jan 6 | Feb 4 |
| 32°F | Feb 9 | Jan 17 | Dec 26 | Dec 23 | Jan 13 | Feb 6 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Casselberry, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 18 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Casselberry planting FAQ
When is the last spring frost in Casselberry, FL?
Casselberry's average last spring frost falls near January 17 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Casselberry, FL?
Expect Casselberry's first fall frost near January 13 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Casselberry in?
Casselberry is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Casselberry?
Casselberry has about -4 frost-free days — a short growing season — between the average last spring frost (January 17) and first fall frost (January 13).
When should I plant tomatoes in Casselberry?
For Casselberry, sow tomatoes indoors about November 22–December 6 and move the seedlings out around January 24, after the last spring frost.
Never miss a window in Casselberry
An email when it’s time to start seeds, transplant, and sow — timed to Casselberry’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Longwood · 5 km
- Winter Springs · 6 km
- Maitland · 6 km
- Goldenrod · 6 km
- Altamonte Springs · 7 km
- Winter Park · 8 km
- Fairview Shores · 10 km
- Wekiwa Springs · 11 km
Frost dates recorded at ORLANDO EXECUTIVE AP, 13 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Casselberry, FL — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012841. Retrieved from https://blissgarden.com/florida/casselberry.