The Extension Office Demonstration Garden project surrounds the CSU Douglas County Extension Office which is located adjacent to the Douglas County Fairgrounds in south Castle Rock.

At approximately 6,200 feet elevation, the terrain is open, windy & exposed with both sandy and clay soils which have been amended periodically over the years since the garden’s origin and design in 1996 by Douglas County Master Gardener, Kate Kator.

There are both shade and sun exposures; a rock garden featuring ice plants Delosperma, Plant Select Petities and other rock garden specialties; a dry creek bed, Herb gardens and Terrace gardens.  A new Xeric garden addition in 2014. These gardens are varied in content and design and contain a variety of perennials, bulbs, native and ornamental grasses, shrubs, trees, and yearly additions of Plant Select plants which are observed and evaluated yearly for the CSU Plant Select program.  Irrigation is provided by sprinklers, micro mist and a drip combination.

All the garden areas are planted and maintained by volunteer Master Gardeners who meet approximately 14 times over the growing season to provide this accessible, educational and attractive setting for the Extension Office.


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