April

23 & 30 Abiotic Advanced Training. Lincoln Land Community College, Springfield, Ill. For more information, call 877-617-887 or visit www.illinoisarborist.org.

25-26 Tree Risk Assessment Course & Exam. Redmond Inn, Redmond, Wash. For more information, visit www.pnwisa.org.

26-27 Soils & Urban Trees Conference. Toronto Botanical Garden, Toronto, Ont. To learn more, visit www.ufis.ca/soil.php.

28 Roots Plus Growers Workshop. Gainesville, Fla. For details, visit www.floridaisa.org.

28 Sidewalks & Trees: How to Repair & Maintain the Structural Integrity of Both. WSU Extension Building, Spokane, Wash. For more information, visit www.pnwisa.org.

30 Certified Tree Worker Class: Aerial Rescue. Reed Keppler Park, West Chicago, Ill. To learn more, call 888-617-8887 or visit www.illinoisarborist.org.

30 2011 Ohio Tree Climbing Championship. Jeffrey Park, Bexley, Ohio. For more information, visit www.ohiochapterisa.org.

May

7 Illinois Arborist Tree Climbing Competition. Salt Creek Forest Preserve, Wood Dale, Ill. For details, visit www.illinoisarborist.org.

7 ISA Pennsylvania-Delaware Chapter Western Climbing Championship. Allegheny Cemetery, Pittsburgh, Pa. To learn more, visit http://penndelisa.org.

7 NEC-ISA Tree Climbing Championship. Bowdoin College, Brunswick, Maine. For more information, call 978-844-0441 or visit www.newenglandisa.org.

11-13 2011 Western Chapter ISA Conference & Trade Show. San Diego, Calif. To learn more, visit www.wcisa.net.

12 Scouting for Pests & Problems of Woody Ornamentals Walkabout: Diseases, Insects & Weeds. Berkshire Botanical Garden, Stockbridge, Mass. For details, call 413-545-0895 or e-mail eweeks@umext.umass.edu.

12-13 Tree Risk Assessment Course & Exam. Oregon City, Ore. For more information, visit www.pnwisa.org.

13 Biodiversity & the Influence of Native & Exotic Plants in Our Landscapes. Morris Arboretum, Philadelphia, Pa. To learn more, call 215-247-5777, ext. 144, or visit www.morrisarboretum.org.

19-21 California Urban Wood Products Conference. San Francisco, Calif. For more information, visit www.wcisa.net.

19-21 2011 Texas Tree Climbing Championship & Workshop. Trinity Park, Fort Worth, Texas. To learn more, visit www.isatexas.com.

20 Seeing the Forest & the Trees: Using the Plant Stewardship Index. Morris Arboretum, Philadelphia, Pa. For more information, call 215-247-5777, ext. 144, or visit www.morrisarboretum.org.

20 20th Annual Desert Horticulture Conference. Tucson Convention Center, Tucson, Ariz. For details, call 520-626-5161, e-mail khahne@ag.arizona.edu or visit http://ag.arizona.edu/deserthort.

20-21 Tree Climbing Championship. Robinson Park, American Fork, Utah. For more information, visit www.utahurbanforest.org.

21 Certified Tree Worker Prep Class. Reed Keppler Park, West Chicago, Ill. To learn more, call 888-617-8887 or visit www.illinoisarborist.org.

21 ISA Pennsylvania-Delaware Chapter Eastern Climbing Championship. Friends Hospital, Philadelphia, Pa. For details, visit http://penndelisa.org.

26 Identifying Freshwater Wetlands in the Landscape: Inland Wetland Plant Identification. French Hall, University of Massachusetts, Amherst, Mass. For more information, visit www.umassgreeninfo.org.

June

2 Scouting for Pests & Problems of Woody Ornamentals Walkabout: Insects, Weeds & Cultural Problems. Cape Cod, Mass. For details, call 413-545-0895 or e-mail eweeks@umext.umass.edu.

2 Oregon Urban & Community Forestry Conference: Community Trees for Healthy Streams. Miller Hall, World Forestry Center, Portland, Ore. For more information, visit www.pnwisa.org.

2 Identifying Freshwater Wetlands in the Landscape: Identifying Inland Wetland Soils. French Hall, University of Massachusetts, Amherst, Mass. To learn more, visit www.umassgreeninfo.org.

2 Vermeer Pacific Rigging Seminar. Fontana, Calif. For details, visit www.wcisa.net.

9 Insect Laboratory: Hands-On Identification & Management Strategies. Agricultural Engineering Building, Univ-ersity of Massachusetts, Amherst, Mass. For more information, call 413-545-0895 or e-mail eweeks@umext.umass.edu.

10 Aerial Rescue Workshop. St. George, Utah. To learn more, visit www.utahurbanforest.org.

12-14 Trees Florida Annual Conference. Jacksonville, Fla. For details, visit www.floridaisa.org.

16-17 Tree Risk Assessment Course & Exam. Redmond Inn, Redmond, Wash. To learn more, visit www.pnwisa.org.

23 Tree Climbing, Work Positioning & Fall Protection. Bend, Ore. For details, visit www.pnwisa.org.