Virual Garden Tours

Promising New Plants.

Plant Select Garden

The Plant Select® Garden Program is a cooperative program administered by Denver Botanic Gardens and Colorado State University together with landscape and nursery professionals throughout the Rocky Mountain region and beyond. The purpose is to identify and test promising new plants for the region for possible introduction into the trade.

Because the staff maintains gardens across 65 developed acres, it is important to have an area dedicated to testing new plants. In 2003, the horticulture staff built a trial bed at the Zoo's greenhouse to trail these plants. Plants were monitored for water requirements, hardiness, and resistance to pests.

In Spring 2010 the Zoo developed a Plant Select® Demonstration Garden that is accessible to the public just south of the Grizzly Grill. The garden features a wide variety of plants that are ideally suited to our climate, with the focus being Plant Select® plants. This garden contains the following Plant Select® plants:

Sonoran Sunset® Hyssop (Agastache cana 'Sinning')
Sunset® Hyssop (Agastache rupestris)
Denver Gold® Columbine (Aquilegia chrysantha)
Colorado Desert Bluestar (Amsonia jonesii)
Filigree Daisy (Anthemis marschalliana)
Mock Bearberry Manzanita (Arctostaphylos x coloradoensis)
Panchito Manzanita (Arctostaphylos x coloradoensis)
Blonde Ambition Blue Grama Grass (Bouteloua gracilis 'Blonde Ambition’)
Korean Feather Reed Grass (‘Calamagrostis brachytricha’)
Baby Blue Rabbitbrush (‘Chrysothamnus nauseous var. nauseous’)
Spanish Gold® Broom (‘Cytisus purgans’)
Fire Spinner® Ice Plant (‘Delosperma 'Broncoensis')
Red Feathers (Echium amoenum)
Bluestem Joint Fir (Ephedra equisetina)
Kannah Creek® Buckwheat (Eriogonum umbellatum var. aureum 'Psdowns')
Seven-Son Flower (Heptacodium miconioides)
Regal Torchlily (Kniphofia caulescens)
Kintzley’s Ghost® Honeysuckle (Lonicera reticulata)
Silverheels Horehound (Marrubium rotundifolium)
Little Trudy® Catnip (Nepeta 'Psfike')
Silver Blade® Evening Primrose (Oenothera macrocarpa subsp. incana)
Avalanche White Sun Daisy (Osteospermum ‘Avalanche')
Pikes Peak Purple® Penstemon (Penstemon x Mexicali ‘Pikes Peak Purple’)
Red Rocks® Penstemon (Penstemon x mexicali ‘Red Rocks’)
Shadow Mountain® Penstemon (Penstemon x mexicali 'Psmyers')
Bridges' Penstemon (Penstemon rostriflorus)
Purple Winter Savory (Satureja montana var. illyrica)
Red Birds In A Tree (Scrophularia macrantha)
Giant Sacaton (Sporobolus wrightii)
Partridge Feather (Tanacetum densum ssp. amani)
Valley Lavender® Plains Verbena (Verbena bipinnatifida)
Alleghany Viburnum (Viburnum x rhytidophylloides 'Alleghany')