 Only from the radio station, your local family of radio stations. Hi, this is Heidi Rader, professor of extension with the University of Alaska Fairbanks. As a lifelong Fairbanksian, I've seen many changes in what we can grow. Choke cherries used to be one of the few ornamentals that thrived here. Now they're doing too well and spreading. They're poisonous to moose and bad for salmon.