The Greenville year in pollen
Pollen seasons in Greenville: tree pollen January to May, grass April to September, and ragweed from early August until the first frost, around November 20.
Tree pollen
Grass
Ragweed
When does ragweed season end in Greenville?
Ragweed season in Greenville typically ends with the first frost, around November 20. Some years it comes as early as November 13, some as late as November 28.
A light frost around November 20 knocks the season down; the hard freeze that finishes it usually follows by December 3. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Greenville pollen year
| Allergen | Typical season |
|---|---|
| Oak | March to May |
| Pine | March to May |
| Eastern red cedar | January to March |
| Maple | February to April |
| Birch | March to April |
| Hickory | April to May |
| Grass | April to September |
Season-by-season detail is on the South Carolina page.
Nearby calendars
Frost dates for Greenville come from the Greenville Dwtn Airport weather station's 30-year records. Season windows reviewed August 2026.