Dr Gerry Mulligan, seen here with some weeds he's growing in his research greenhouse at the Experimental Farm, is the fifth or sixth generation from his family who has worked on the farm. It used to be their land, and they kept at it when it was expropriated for agricultural research in the late 1800s. He's a weed scientist. Assignment - 119378 Photo taken at 13:57 on December 22. (Wayne Cuddington/ Ottawa Citizen)