The Memphis year in pollen
Pollen seasons in Memphis: tree pollen January to May, grass April to September, and ragweed from early August until the first frost, around November 16.
First frost lands around November 16 in Memphis — about 13 days later than Tennessee overall — which shifts when ragweed season ends here.
When does ragweed season end in Memphis?
Ragweed season in Memphis typically ends with the first frost, around November 16. Some years it comes as early as November 9, some as late as November 23.
A light frost around November 16 knocks the season down; the hard freeze that finishes it usually follows by November 28. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Memphis 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 Tennessee page.
Nearby calendars
Frost dates for Memphis come from the Memphis International Airport weather station's 30-year records. Season windows reviewed August 2026.