In St. Paul and across Minnesota, hundreds of three-sided purple cylinders are being hung in ash trees, each hooked to an upper branch and tied to the trunk. But this is no appeal to aesthetics: It’s ...

New Hampshire agriculture officials are telling people who love to walk in the woods that they'll be seeing a lot of purple this summer.Purple prism traps resembling box kites will be seen in ash ...

Guess who's coming to dinner? New York state Department of Environmental Conservation is busy answering that question by placing nearly 11,000 sticky, purple insect traps throughout the state. I first ...

The genus Iris of flowering plants -- named after the Greek rainbow goddess because of the variation in flower color -- comprises over 300 species across the northern hemisphere, some of which are ...