The Department of Horticulture and Landscape Architecture at Colorado State has indentified five particular species of plant that work well in semi-arid climates for green roofs.
Energy Daily reports that "Previous research on species that can survive and thrive on extensive green roofs has shown that succulents outperform most non-succulents."
Blue grama and hardy ice plant weathered the test best, outperforming other succulents.
The study is being conducted on the roof of the Colorado headquarters for the Environmental Protection Agency, a LEED-certified office building.
From the EPA's website:
"While installing green roofs has been gaining in popularity in temperate areas marked by relatively ample rainfall such as Europe (green roofs are particularly popular in Germany) and the Northeastern U.S., developers, architects, and building managers have much less experience installing them in places with low rainfall and the solar extremes presented by high altitudes. EPA's green roof is the first of its kind in the state of Colorado."
FULL STORY: Five Standout Species for Extensive Green Roofs
Best Smart Growth Projects in America
This year, the Environmental Protection Agency looked at "articulate" city plans that aimed for a more sustainable future. There were five plans across that nation that were awarded for "achievement in smart growth."
EPA Terminates $116 Million in Grants for Reducing Emissions from Construction Materials
C-MORE grants were earmarked for industry trade groups and universities.
California Lawmakers Move to Protect Waterways
Anticipating that the Trump EPA will reinstate a 2017 policy that excluded seasonal wetlands and waterways from environmental protections.
Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss
The plan would reduce visitor accommodation by 25,% resulting in 1,900 jobs lost.
Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage
Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”
Why Should We Subsidize Public Transportation?
Many public transit agencies face financial stress due to rising costs, declining fare revenue, and declining subsidies. Transit advocates must provide a strong business case for increasing public transit funding.
Paris Bike Boom Leads to Steep Drop in Air Pollution
The French city’s air quality has improved dramatically in the past 20 years, coinciding with a growth in cycling.
Why Housing Costs More to Build in California Than in Texas
Hard costs like labor and materials combined with ‘soft’ costs such as permitting make building in the San Francisco Bay Area almost three times as costly as in Texas cities.
San Diego County Sees a Rise in Urban Coyotes
San Diego County experiences a rise in urban coyotes, as sightings become prevalent throughout its urban neighbourhoods and surrounding areas.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Smith Gee Studio
Alamo Area Metropolitan Planning Organization
City of Santa Clarita
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service