The Miami year in pollen
Pollen seasons in Miami: tree pollen December to April, grass March to October, and ragweed from mid-July, fading out by mid-December.
Unlike most of Florida, Miami rarely sees a real frost, so ragweed fades out rather than stopping cold.
Tree pollen
Grass
Ragweed
When does ragweed season end in Miami?
Ragweed around Miami winds down on its own through mid-December — most winters never bring a season-ending freeze.
The rest of the Miami pollen year
| Allergen | Typical season |
|---|---|
| Oak (live oak) | January to April |
| Pine | January to April |
| Cypress and red cedar | December to February |
| Grass | March to October |
Season-by-season detail is on the Florida page.
Nearby calendars
Frost dates for Miami come from the Miami Beach weather station's 30-year records. Season windows reviewed August 2026.