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...

Multi-Site Woody Plant Evaluation Update

By James E. Klett, Ph.D. Professor & Landscape Horticultural Specialist Colorado State University The multi-site woody plant evaluation project continues to gather data on woody plant performance...

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...

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...

Plant Select® 2021 Introductions

Plant Select® is the country’s leading source of plants designed to thrive in the high plains and intermountain region. It is a nonprofit collaboration...

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...

Consumer Favorites from 2019 Annual Trial Gardens

On Saturday, August 10, we invited the public from Colorado to visit and judge over one thousand different annuals from 25 different companies from...

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...

Plant Select 2020 Introductions

Plant Select® is the country’s leading source of plants designed to thrive in the high plains and intermountain region. It is a nonprofit collaboration...

Plant Select® Introductions & Top Performers from the Past

Three Featured 2019 Plants Plant Select® is the country’s leading source of plants designed to thrive in the high plains and intermountain region. It is...
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