a photo of a gumweed
Gumweed (Grindelia subalpina) is an easy composite to identify in spite of its yellow disk and ray flowers. The white "goo" on the unopened buds and the curly involucral bracts (the tiny leaf like structures surrounding the unopened buds and on the backs of opened flowers) are easy identifying characteristics.

Photo courtesy of Rocky Mountain National Park.

Last updated: March 31, 2012

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Mailing Address:

1000 US Hwy 36
Estes Park, CO 80517


(970) 586-1206
Through winter, the Information Office is open 8:00 am–4:30 pm Mon–Fri. Recorded Trail Ridge Road status: (970) 586-1222.

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