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The Extension office provides assistance and programs for the community in five main areas: Agriculture, Horticulture, Family and Consumer Science, Natural Resources and 4-H Youth Programs.

Demonstration Gardens   arrow

DemBoulder CSU Extension demo gardenonstration Gardens

There are several demonstration gardens around the Natural Resource Building on Boulder County’s Fairgrounds in Longmont, Colorado. The gardens are accessible any time therefore, come explore! Learn what plants thrive in our environment.

Plant Select Garden

The Plant Select® Garden is located on the south and west sides of the building. Spearheaded by the CSU Horticulture Department and the Denver Botanic Gardens, the Plant Select program trials plants that perform well in our region. As a result, these varieties are highly recommended for gardeners and landscapers in our climate. For more information on the Plant Select® program, visit the website: You will find a complete list of plants and locations of other Plant Select demonstration gardens around the state.

Rock and Hell Strip Gardens

The Rock and Hell Strip Demonstration Gardens were installed in 2017 around our parking lot. These types of areas are often neglected and unsightly due to difficult growing conditions. However, the correct planting pallet can create valuable additions to any landscape. Delve into the options for difficult areas!

Native Plant Garden

There is an exciting trend happening in the world of horticulture. Professional landscape designers and architects are utilizing Colorado’s native plants’ strengths in large-scale settings and in private gardens. Using indigenous plants in everyday settings is becoming the norm.

Colorado has a large number of native plants suited to home gardens and commercial sites. Native Plants are adaptable to our local soils and climate, so they need fewer resources like water and fertilizer. As a result, they are typically more resilient than traditional landscape plants. To demonstrate the beauty of our stat’s native plants, the Colorado Native Garden was installed in 2018. Check out the native plantings on the east side of the building. These plants easily thrive while encouraging native and non-native pollinator habitats. Native plant list for DEMO garden

For more info on natives in our area…