May

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.

June

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.

3 Scouting for Pests & Problems of Woody Ornamentals. Bridgewater, Mass. To learn more, call 413-545-0895, e-mail eweeks@umext.umass.edu or visit www.umassgreeninfo.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 mdarborist@comcast.net.

9-10 i-Tree. Oakland Community College, Auburn Hills, Mich. To learn more, call 517-337-4999, e-mail asm@acd.net or visit www.asm-isa.org.

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 dcaraher@upenn.edu.

14-18 Western Hazard Tree Workshop. J. Herbert Stone Nursery, Central Point, Ore. To learn more, e-mail alan.kanaskie@state.or.us or visit www.fs.fed.us/foresthealth/technology/htwc/index.htm.