Eastern Colorado Wildflowers
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Search capabilities have been added to aid with wildflower identification.

Eastern Colorado Wildflowers contains photographs and information for over 525 plant species growing east of the Continental Divide in Colorado. Species listed in Weber and Wittmann's Colorado Flora: Eastern Slope, 3rd Edition are included.

Colorado wildflower species are listed alphabetically by Scientific names, Common names, or Families. Names are those used by Weber and/or USDA Plants Database.

Vegetation zones follow those described by the Colorado Native Plant Society:

Plains: 3500 to 6500 feet
Foothills: 6500 to 8000 feet
Montane: 8000 to 10,000 feet
Subalpine: 10,000 to 11,500 feet
Alpine: above 11,500 feet (tree line)

Elevations listed for individual Colorado wildflower species are from herbarium specimens.

Times of flowering are estimates based on references and my own observations. They can vary depending on elevation and climate.

Great effort has been made to correctly identify wildflower species. If you believe a species has been misidentified, please send an email and I will make corrections. This feedback will strengthen the site as a resource.

Photographs may be used for educational purposes. Please credit to "easterncoloradowildflowers.com".
High resolution photo files of Colorado wildflowers are available. Please contact me for details.

Ackerfield, Jennifer, The Flora of Colorado (draft). 2012.
Dorn, Robert D., Vascular Plants of Wyoming, 3rd edition. 2001.
Flora ID Northwest database plant identification tool developed by Bruce Barnes.
Gadd, Alix., Northern Colorado Plants: A Field Guide to the Flora of the Northern Front Range Urban Corridor. 2007. Travertine Press.
Guennel, G.K., Guide to Colorado Wildflowers, Volume 1 (Plains and Foothills) and Volume 2 (Mountains). 1995.
Southwest Colorado Wildflowers web page by Al and Betty Schneider
USDA Plants Database
Weber, William A. and Ronald C. Wittmann, Colorado Flora: Eastern Slope, 3rd edition. 2001.

Thank you to Sara, Kate and Charlie for their patience during family hikes and for allowing me to dominate our computer for several months. Thank you also to my friends and colleagues who have assisted with plant identification. And to my parents, whose copy of Eliot Porter's Birds of North America was an inspiration.

Web author: Ernie Marx