We recently installed one of the largest green roofs in the area at Mistein Hall, Cornell University. This was directed by one of our preeminent design landscapers, Chris Gruber. Chris also managed the installation of 96,000 sedums and personally planted about 10,000.
Below, you can see some of our bags of specially-blended green-roof soil. Each bag represents approximately 3,000 to 3,500 lbs of soil, so you might ascertain that our crew people work quite hard. At one point, in December 2011, Chris and the crew had to deal with frozen soil, but being of an imaginative and problem-solving disposition, they eventually placed the soil on the roof.