Hellebores for Colorado
A robust, relatively new perennial to many Colorado gardens is the genus Helleborus (common name: hellebores). The leathery leaves, which are mainly evergreen, are...
Top Picks for Off-Season Color
In the 2018–19 Cool Season Trials, we evaluated 122 varieties. They were planted in late October 2018, and grown in our trials till early...
Deciduous Trees for Winter Interest
Often when people think of trees in winter naturally the first image that comes to mind is that of evergreen conifers such as spruce,...
BEST MANAGEMENT PRACTICES FOR PESTS: Rampant Fire Blight in 2018
For the last 30 years every spring and summer, customers have been bringing their fire blight samples to Phelan Gardens and Earth Expressions Landscape...
Good Things Come to Those Who Don’t Wait
Financial Affairs
By Bob Conner, Rocky Mountain Region Hard Goods Sales representative, Griffin Greenhouse Supplies, Inc.
With spring barely behind us, now is a perfect time...
CSU Research: “Top Performer” Perennials from the 2022 CSU Flower Trial
In 2022, Colorado State University continued its three-year herbaceous perennial trial and chose eight perennials as the ‘Top Performers’ from 113 that were planted...
2023 Legislative Report
The First Regular Session of the 74th General Assembly adjourned on May 8th. A full detailed report by Hicks & Associates on the activities...
Woody Plant Trials on Colorado’s Western Slope
By James E. Klett, Ph.D.
Professor & Landscape Horticultural Specialist
Colorado State University
As part of our multi-site woody plant trials throughout Colorado, one site is at...
Creating Desirable Outdoor Living to Maximize Property Values
It’s no secret Coloradans love the outdoors. Outdoor living spaces are important for Colorado homes. While there is no one-size-fits-all answer to creating the...
Green Industry Legislative Priorities 2026
Colorado General Assembly – 2026 SessionThis document outlines GreenCO’s legislative priorities and policy positions for the 2026 Colorado legislative session. GreenCO will remain proactive,...



















