Colorado State University Extension: The Colorado State University Extension has several resources available for home gardeners including Colorado Master Gardeners and fact sheets.
Colorado Water - Live Like You Love It : Learn where Colorado water comes from, how it is used and how to conserve it.
Northern Colorado Water Conservancy District: Conservation garden containing more than 700 plants and 60 turf grasses. The gardens are free and open to the public every day of the year during daylight hours.
Plant Select: Plant Select® is a cooperative program administered by Denver Botanic Gardens and Colorado State University in concert with horticulturists and nurseries throughout the Rocky Mountain region and beyond. The purpose of Plant Select® is to seek out, identify and distribute the very best plants for landscapes and gardens from the intermountain region to the high plains.
Plant Talk Colorado: Provides reliable, timely information on more than 500 horticultural topics including xeriscape selecting trees, fertilizing lawns, and natural pesticides.
WaterSense: WaterSense is a U.S. Environmental Protection Agency (EPA) program designed to encourage water efficiency in the United States
Colorado Water Conservation Board