The Little Rock year in pollen
Pollen seasons in Little Rock: tree pollen January to May, grass April to September, and ragweed from early August until the first frost, around November 10.
First frost lands around November 10 in Little Rock — about 4 days later than Arkansas overall — which shifts when ragweed season ends here.
When does ragweed season end in Little Rock?
Ragweed season in Little Rock typically ends with the first frost, around November 10. Some years it comes as early as November 4, some as late as November 17.
A light frost around November 10 knocks the season down; the hard freeze that finishes it usually follows by November 21. Based on 30 years of NOAA frost records (1991–2020).
The rest of the Little Rock pollen year
| Allergen | Typical season |
|---|---|
| Oak | February to May |
| Pine | February to April |
| Eastern red cedar | January to March |
| Pecan | April to May |
| Grass | April to September |
Season-by-season detail is on the Arkansas page.
Nearby calendars
Frost dates for Little Rock come from the Little Rock Airport Adams Field weather station's 30-year records. Season windows reviewed August 2026.