2026 EVENTS
The 2026 Regional Grey to Green Conferences will explore the most recent green infrastructure science, economic valuation, asset management, public policy, technologies, and best practices in design, installation and maintenance. Our goal is to help inform the current policy debate by making the case for a rapid and significant increase in green infrastructure investment, a trend thatʼs now occurring worldwide.
Costa Mesa, CA: December 3, Grey to Green Conference
The Green Roof Installation and Maintenance Professional (GRIMP) Training and Accreditation is a new certification involves a combination of hands-on and presentation style training. It introduces attendees to the basic skills and knowledge required to install green roofs and maintain them. This training provides participants with a grounding in this information, covering a variety of green roof systems, to provide green roof installers and maintenance professionals with the information, techniques, and training necessary to successfully install and maintain basic extensive green roofs.
2026 GRIMP Training and Accreditation Dates:
Denver: August 20
Toronto: August 28
New York City: September 30