John Hassall has plenty of experience designing, planting and maintaining green roofs and walls, but can answer all of your garden design questions. John’s background in waste management sparked his interest in green roofs and walls because they typify modern society’s ability to overlook or waste valuable spaces. He has experience in both building and landscape management and the combination provides him with knowledge that is crucial for designing and managing green roofs and walls whose beauty lasts. John enjoys discussing all things environmental sustainability, particularly biodiversity, waste reduction, and urban agriculture. He enjoys sharing his own gardening experiences, both on the ground and on the roof.