Perennial Results

The two-year Perennial Trial program at Colorado State University is designed to test newer perennial cultivars that have been introduced in the past three years or less. Entries in this trial are allowed to overwinter twice before they are switched out for new entries.














Photos of all Plants on Evaluation Day 2008


  • Introduction Overview of the perennial evaluations (PDF Document)
  • Report Size, Ratings and Comments. (PDF Document)