Greenwood Interlock & Landscape Ltd. is headed by Ian & Lisa Andrews, graduates of Humber College's Applied Arts & Technology Program. Trained in the field of horticulture they lead a progressive and innovative design/build company servicing Durham, Northumberland, Kawartha Lakes and the GTA.

Ian & Lisa believe that success is due to their passion for creating and developing new landscape concepts, effective communication with clients, and ability to implement a client's vision.