Cottonwood is one of the top three pollinating trees in the Grand Junction, Montrose, Delta area. It peaks in mid-to-late March and early April, between Elm and Juniper.
Elm is one of the most common aeroallergens to trigger symptoms among allergy sufferers in Western Colorado and it holds a special spot as one of our "Top 3 Tree Pollens," sharing company with Juniper and Cottonwood.