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Page 6 of 8 <br /> To learn more about using native trees and shrubs, consult a good book such as <br /> • Landscaping for Wildlife by Carrol Henderson, available by calling 800-657-3757. Many <br /> garden centers offer advice on selection. Ask if the species spreads easily; aggressive <br /> plants can end up being a problem. For free fact sheets on growing native plants, contact <br /> the DNR Information Center. <br /> John J. Moriarty is a wildlife biologist with Hennepin Parks. He has been battling <br /> buckthorn at work and at his home in the Twin Cities for several years. He wrote about <br /> moles and shrews in the January-February 1998 issue. <br /> How Big Is Your Back Yard? <br /> The big impact of a little buckthorn <br /> Control of invasive species such as buckthorn costs Minnesota state parks, scientific and <br /> natural areas, and other natural lands tens of thousands of dollars every year. For example, <br /> in two years Myre-Big Island State Park spent more than $30,000 to control buckthorn, <br /> honeysuckle, and Siberian elm. <br /> Does it make a difference at Afton State Park, say, if an invasive exotic such as European <br /> buckthorn is planted in your back yard? Yes. No park is an island (well, so to speak <br /> anyway). Along with the wind, birds are the primary transporters of berries and seed. <br /> Because of buckthorn's cathartic effect, a bird picking up a berry in LeRoy would not make <br /> it a hundred miles away to Afton before expelling that berry, but it could certainly deposit it <br /> a mile away in Lake Louise State Park. <br /> European buckthorn infests most state parks and natural areas in or near cities. It was, and <br /> still is, planted as hedgerows and ornamental trees. Selecting plant materials native to your <br /> landscape region helps ensure that what gets picked up and carried away by a bird, an <br /> animal, or the wind will not result in the loss of a natural community down the road or <br /> across the state. <br /> To volunteer to help with control efforts, or to get a copy of fact sheets on exotic species, <br /> call the DNR Information Center or visit the DNR web site. <br /> --Kathryn E. Bolin <br /> DNR Resource Management Specialist <br /> ----- Original Message ----- <br /> From: tom.moore(cD-ci.arden-hills.mn.us <br /> To: theashtons(a)usfamily.net <br /> Sent: Monday, January 31, 2005 9:16 AM <br /> 3/14/2005 <br />