CSU RESEARCH: 2021-22 Cool Season Trials Top Picks for Off-Season Color
This was the fourteenth year that Colorado State University (CSU) has conducted Cool Season Trials at the Annual Flower Trial Garden. The overall goal...
Top Annuals from CSU Annual Flower Trials
By James E. Klett, Ph.D.
Professor & Landscape Horticultural Specialist
Colorado State University
During the week of August 3, 2020, only about 90 professionals evaluated the Annual...
CNGA Annual Awards Honor the Best in the Business
Each year, CNGA recognizes individuals who have made significant contributions to CNGA and the industry. Awards are presented during the Industry Celebration which takes...
Developing Japanese Beetle Biological Control Programs
Over the past two decades, since the Japanese beetle first became established in parts of eastern Colorado, it has proved very well adapted to...
The True Value of a Tree
A common question from customers, both retail and landscape contractors, is “Why are trees so expensive?” On the surface, it is a difficult question...
CHREF Scholarship Winners Announced
By Mike Schleining, CCNP
CHREF Board Member
2015-16 & 2016-17 CHREF Scholarship Recipient
As you know, the Colorado Horticulture Research and Education Foundation (CHREF) relies on fundraisers...
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,...
Green Roof Weed Management: Pendulum 2G Pre-Emergent Herbicide Damages Green Roof...
Green roofs can provide many benefits to urban communities, including reduction of urban heat island effect, reduction in building cooling costs, improvement in air...
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...
Industry Picks from the 2019 Annual Trial Garden
On Tuesday, August 6, more than 175 industry professionals and advanced Colorado Master Gardeners rated more than 1,050 flowering and foliage plants at the...



















