hazel pollen.
Corylus · Tree
A late-winter shrub pollen, common in Europe and in US hazelnut orchards.
Usual season in the US
January to March
Typical months; the stronger marks are the usual peak. Seasons shift with region, weather and year.
Where it grows
In the US, hazel grows mostly in the Pacific Northwest, where hazelnuts are farmed, and as native shrubs in the East.
Good to know
Hazel is a birch relative and one of the very first pollens of the year.
In Sneezecast
Google’s pollen forecast doesn’t list hazel for the United States today, and Sneezecast forecasts only the US for now. The app still has its drawing, so every plant the forecast can name has a picture.
Maple
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Alder
Cottonwood
Juniper