Mary Robson is a cooperative extension agent with Washington State University in Renton, Washington. She writes The Practical Gardener column in The Seattle Times . Her weekly WSU Cooperative Extension garden column is featured in other local newspapers including the Tacoma News Tribune and the Everett Herald . Robson provides gardening information on the "Voice of the South Sound" KHHO, 850 AM in Tacoma, Wednesday 4:40 PM - 5:00 PM, and Thursday from 7:40 AM - 7:55 AM.