Colorado State University Campus Arboretum

ArbNet Level II Arboretum

Heritage Garden SignageThe Colorado State University (CSU) Campus Arboretum and Botanical Garden embodies CSU’s land-grant heritage and mission by offering an engaging learning laboratory environment for students, employees, and community visitors. We manage trees diverse in terms of age, class, and species, distributed over three campuses (Main, South, and Foothills), comprising 2,400 acres of land. The majority of CSU’s managed urban forest is located on the Main Campus within 220 acres of irrigated landscape. The Campus Arboretum leverages the investments of our historical and diverse urban forest, the Heritage Arboretum and Garden, CSU Horticulture Research Center, Annual Flower Trial Gardens, and the Perennial Garden at the University Center for the Arts. The CSU Campus Arboretum is an exceptional asset for the community, advancing individual programs and efforts around research and teaching through the overarching structure and prominence of the arboretum, while solidifying a legacy that preserves our urban forest for future generations.

ArbNet’s Arboretum Accreditation Program advances the planting, study, and conservation of trees, recognizing arboreta at various levels of development, capacity, and professionalism and fosters professionalism of arboreta worldwide. No other international program of accreditation exists specific to arboreta. Accreditation is based on self-assessment and documentation of an arboretum’s level of achievement of accreditation standards, including planning, governance, number of species, staff or volunteer support, education and public programming, and tree science research and conservation. Learn more about CSU's ArbNet Accreditation Level II status and the Morton Register.

View our CSU Tree Genus Species List.

View our Collections Policy.

View our Tree Care Plan.

Tree Campus USA

To be a Tree Campus USA site, CSU ensures the protection and maintenance of our campus urban forest, reduce hazardous tree risks to public safety, and maintain a sustainable campus forest through tree species diversity and best management practices. The university joins more than 150 American colleges and universities recognized by the program. Specifically, Facilities Management and the Colorado State Forest Service team up to meet the five Tree Campus USA Standards: Campus Advisory Committee, Campus Tree Care Plan, Campus Tree Program with Dedicated Annual Expenditures, Arbor Day Observance, and Service Learning Project. Throughout each year, the Tree Advisory committee meets to ensure that the Tree Care Plan stays current and addresses new challenges as they arise. Each spring, they host an Arbor Day celebration, which provides students with a hands-on opportunity to learn more about trees and their important role in our environment.

Join us each year for our Annual Tree Campus USA Planting Event that occurs during CSU’s Earth Week Celebrations! Please note: Our community-wide Earth Week and Arbor Day celebrations for April are postponed due to safety precautions for COVID-19. Check back here for more information regarding future rescheduled events.

Facilities Management and Colorado State Forest Service planting a tree by Canvas Stadium for the 2019 Arbor Day Event   Volunteers finished planting a tree by Canvas Stadium for the 2019 Arbor Day Event    Tree planted in 2017 Arbor Day Event, located between the Lory Student Center and the Rec Center   Tree Campus USA Arbor Day Event 2017

Tree Campus USA Arbor Day planting in 2017 Volunteers finished planting a tree on the Oval for the first Arbor Day event on campus  CSU's Tree Campus USA Arbor Day event in 2012  Facilities Management and volunteers planting a tree for the 2017 Arbor Day Event

Arboretum News & Media


Special Tree & Plant Collections

Perennial Garden Perennial Garden

In the fall of 2016 the Perennial Teaching, Research, and Demonstration Garden was relocated from the old Plant Environmental Research Center (PERC) to its new home next to the CSU University Center for the Arts on Remington and Pitkin. The Perennial Garden was originally started at the PERC site in 1980 by Dr. Jim Klett and has grown over the decades to approximately 1000 taxa. Three of each taxa were moved to the new location for a total of approximately 3,000 plants. In addition to the 3,000 herbaceous perennials moved, 19 trees were saved and relocated.

Read more about Superior Herbaceous Perennials:

Heritage Arboretum & Garden Pathway at the Heritage Arboretum

The Heritage Arboretum at CSU has the largest collections of woody plants in the region with over 1,100 different taxa represented. The Heritage Gardens showcase the agricultural heritage from six major regions in Colorado. Presently, a computerized method for collection, storage, and retrieval of information on plant performance has been implemented for all the woody plants. New plants are continually being added to and evaluated in the collection.

Read the Heritage Arboretum reports or learn more about woody plant research:

Annual Flower Trial Garden Annual Flower Trial Garden

The outdoor display and test areas at the Annual Flower Trial Garden were established to allow students, researchers, industry representatives, homeowners and extension personnel to learn, teach and evaluate through horticultural research and demonstration projects conducted in the unique environmental conditions of the Rocky Mountain/High Plains region.

Read more about the Flower Trial Gardens:

The Oval

The Oval elm collection dating from 1881, is preserved for the long-term benefit of university and has continuing research value in finding efficacious treatments for evolving exotic pests of elm. The Heritage Garden & Arboretum Collection is 5.5 acres and was established over thirty years ago. It has the largest collections of woody plants in the region with over 1,100 different taxa represented.

Read about the Oval's history: The Oval - Fun Facts & History

The Oval in winter    The Oval in the summer   The Oval in the fall   The Oval in the fog - 1990

CSU is a proud member of the American Public Gardens Association, ArbNet, and Tree Campus USA.

For more information about the Campus Arboretum or Tree Campus USA, please contact Fred Haberecht at 970-491-0162.

To locate the CSU main campus or get directions, view the CSU interactive map.

American Public Gardens Association Proud Member Logo      ArbNet Accredited Arboretum Level II    Tree Campus USA Logo