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Tree care important for safety - The Register-Guard, Eugene, Oregon, USA Page 4 of 5 <br /> • Albany: Feb. 4, Linn Benton Community College. <br /> (1110, • Roseburg: Feb. 11, Umpqua Community College <br /> • Coos Bay: Feb. 12, Southwestern Oregon Community <br /> College <br /> • Cost: $20 <br /> • Registration: www.pnwisa.org/ news.html <br /> • Information: (503) 874-8263 <br /> - Oregon Department of Forestry <br /> AVOIDING HAZARD TREES <br /> Common mistakes that create hazard trees: <br /> • Overwatering: Heavy summer watering can cause root rot <br /> in native trees. Avoid watering more than once a week, and <br /> aim sprinklers away from root systems. <br /> • Cutting roots: Avoid severing roots for ditches, landscaping <br /> and construction. <br /> • Covering roots: Do not spread soil or mulch on top of root <br /> systems, and don't pile any up against the trunk, where fungus <br /> may grow. Do not pave over root systems; it will deprive the <br /> tree of water and oxygen. <br /> • Mechanical injuries: Scraping the bark can damage and <br /> even kill a tree. Be careful with lawnmowers, trimmers and <br /> weeders. <br /> • Cavities: Don't clean out cavities or pockets, and do not fill <br /> them with cement. This is the tree's way of sealing off a <br /> wound. Leave them alone. <br /> • Topping: Don't attempt to halt growth by topping a tree. It <br /> will grow abnormally. <br /> • Information: To learn more about proper tree care, visit <br /> the International Society of Arboriculture's Web site at <br /> www.isa-arbor.corn. <br /> - Oregon Department of Forestry, Pacific Northwest Chapter of <br /> the International Society of Arboriculture, City of Eugene urban <br /> forester <br /> http://www.registerguard.com/news/2003/01/04/1b.cr.hazardtree s.0 1 04.html 1/8/03 <br />