21-22 Tree Climbing Competition 2010. Bob Woodruff Park, Plano, Texas. For more information, visit www.isatexas.com.
22 Western Tree Climbing Championship. Pittsburgh, Pa. For details, visit www.penndelisa.org.
2-5 Native Plants in the Landscape Con-ference. Millersville University, Millersville, Pa. For more information, call 717-871-2189 or visit www.millersvillenativeplants.org.
4 Ohio Chapter ISA Northern Ohio Regional Meeting. Toledo Zoo, Toledo, Ohio. For more information, visit www.ohiochapterisa.org.
5 Ohio Tree Climbing Championship. Walbridge Park, Toledo, Ohio. To learn more, visit www.ohiochapterisa.org.
5 New England Chapter ISA Tree Climbing Competition. University of Massachusetts, Amherst, Mass. For details, visit www.newenglandisa.org.
9 Maryland Arborist Association Pest Walk. Howard Community College, Columbia, Md. For more information, call 410-321-8082 or e-mail email@example.com.
10-11 Illinois Arborist Association Summer Conference. Lake of the Woods Forest Preserve, Mahomet, Ill. For details, visit www.illinoisarborist.org.
12-13 Western Chapter ISA Tree Climbing Championship. Peart Park, Casa Grande, Ariz. To learn more, visit www.wcisa.net.
13-15 Trees Florida 2010. Key West, Fla. For more information, visit www.floridaisa.org.
14 Restoring Our Native Ecosystems. Philadelphia, Pa. For details, call 215-247-5777, ext. 125, or e-mail firstname.lastname@example.org.
14-18 Western Hazard Tree Workshop. J. Herbert Stone Nursery, Central Point, Ore. To learn more, e-mail email@example.com or visit www.fs.fed.us/foresthealth/technology/htwc/index.htm.