elm pollen.
Ulmus · Tree
A late-winter tree pollen, with some Southern elms flowering again in the fall.
Usual season in the US
February to April, and September to October for Southern elms
Typical months; the stronger marks are the usual peak. Seasons shift with region, weather and year.
Where it grows
American elms flower from February into April across the East and Midwest. Cedar elm and Chinese elm, common in the South, flower in September and October instead.
Good to know
An elm in fall is easy to miss: it coincides with ragweed, so the two can look like one season until a diary separates them.
In Sneezecast
Elm is in the five-day forecast for your area whenever it’s in season. Star it if you know it gets you, and the morning verdict follows it:
Elm high — your top trigger. Take your usual allergy medicine before you head out.
Not sure it’s yours? Log how each evening felt in two taps. After ten logged days, Sneezecast compares your diary with the pollen and ranks what moves your symptoms. How it learns
Oak
Birch
Maple
Ragweed
Ash
Alder
Cottonwood
Juniper
Pine