Want to see your event in the Tree Services calendar? E-mail the details to treepr@MooseRiverMedia.com.

April 

15 Tree Protection During Construction Activities. Griffin, Ga. To learn more, call 770-229-3251.

16 15th Arborists’ Certification Preparation Course: Diagnosis & Plant Disorders. Brea Conference Center, Brea, Calif. For more information, call 949-454-2409.

16 Pruning Trees and Shrubs. Holiday Inn, Brockton, Mass. For more information, call 413-545-0895 or visit www.umassgreeninfo.org.

16 Tree Workers’ Certification Preparation Course: Tree Planting. For details, call 949-454-2409.

18 ISA Certified Arborist Exam. San Antonio, Texas. For more information, visit www.isa-arbor.com/certification/tests.aspx.

19 Georgia Arborist Association Tree Climbers Workshop. Decatur, Ga. To learn more, call 770-554-3735.

19 Workshop: Pruning/Safety, Tree Assessment & Risk Management, Trees & Construcion, Climbing & Working in Trees. Orem, Utah. For details, call 801-852-6920, e-mail sbunker@provo.utah.gov or visit www.utahurbanforest.org.

19 Connecticut Tree Climbing Competition. Edgerton Park, New Haven, Conn. For more information, call 203-484-2512 or visit www.ctpa.org.

19-20 Arbor Day Celebration & Trade Show. Hales Corners, Wis. To learn more, visit www.waa-isa.org/calendar_of_events.asp.

19-20 Charlotte Arborist Association Tree Climbing Championship. Freedom Park, Charlotte, N.C. For more information, call 704-363-1578.

22 Profiting From Intensive Plantation Silviculture. North Carolina State University, Raleigh, N.C. For details, call 919-515-5574 or e-mail james_jeuck@ncsu.edu.

22 ISA Arborist Certification Course: Tree Biology. Casper, Wyo. For more information, call 307-235-8309 or visit www.casperwy.gov.

23 15th Arborists’ Certification Prepara-tion Course: Plant Health Care. Brea Conference Center, Brea, Calif. Call 949-454-2409 to learn more.

23 Tree Workers’ Certification Preparation Course: Tree Pruning. For details, call 949-454-2409.

23 Public Tree Establishment Seminar. Warren Public Library, Warren, Pa. To learn more, call 814-333-7440.

25 118th Official State of Texas Arbor Day Celebration. El Paso, Texas. For more information, visit www.isatexas.com.

29 Scouting for Pests and Problems of Turf and Woody Ornamentals Walkabout: Weeds and Tree & Shrub Diseases. Elm Bank, Wellesley, Mass. Call 413-545-0895 or visit www.umassgreeninfo.org for more information.

29-30 Tree Risk Assessment in Urban Areas and the Urban/Rural Interface. Spokane, Wash. For details, visit www.pnwisa.org/calendar.html.

29-May 28 Arboriculture I & II Tree Climbing Training & Educational Course. Forest Resource Education Center, Jackson, N.J. To learn more, call 732-833-0500.

30 15th Arborists’ Certification Preparation Course: Tree Assessment and Risk Management; Trees and Construction. Brea Conference Center, Brea, Calif. For more information, call 949-454-2409.

30 Tree Workers’ Certification Preparation Course: Tree Safety Procedures. Brea Conference Center, Brea, Calif. To learn more, call 949-454-2409.

30 Electrical Hazards Awareness Program workshop. Mid-State Technical College, Wisconsin Rapids, Wis. For details, call 800-733-2622 or visit www.tcia.org/Public/product_ehap_seminars.htm.

May 

1-4 Western Chapter ISA Annual Conference & Trade Show. Fairmont Hotel, San Jose, Calif. For more information, call 866-785-8960 or visit www.wcisa.net.

6 ISA Arborist Certification Course: Tree Selection. Casper, Wyo. For details, call 307-235-8309 or visit www.casperwy.gov.

9-10 Tree Climbing Championship. Pioneer Park, Provo, Utah. To learn more, call 801-446-8229 or e-mail lisa_ucfc@yahoo.com.

9-14 ISA Inaugural Asia Pacific Conference & Tree Climbing Championships. Brisbane, Australia. For more information, e-mail sharyn.kumnick@isaac.org or visit www.isaac.org.au.

12 Electrical Hazards Awareness Program workshop. Knoxville, Tenn.; Milpitas, Calif. For details, call 800-733-2622 or visit www.tcia.org/Public/product_ehap_seminars.htm.

13-14 Hazard Trees/Trees, People & the Law. Minneapolis, Minn. For more information, call 402-473-2102, e-mail kwatts@arborday.org or visit www.arborday.org.

13-15 Forest Insect & Disease Management Workshop. Grangeville, Idaho. To learn more, call 208-666-8625 or e-mail teckberg @idl.idaho.gov.

15 Certified Tree Expert Prep Course II. Monmouth County Parks, Middletown, N.J. For more information, call 888-873-3034.

17 ISA Certified Tree Worker Exam. New Jersey Forestry Research & Education Center, Jackson, N.J. To learn more, call 609-625-6021 or visit www.isa-arbor.com.

19 Electrical Hazards Awareness Program workshop. Tucson Electric Power, Tucson, Ariz. For details, call 800-733-2622 or visit www.tcia.org/Public/product_ehap_seminars.htm.

19 Electrical Hazards Awareness Program workshop (Spanish). New Harvest Park, Knoxville, Tenn. For more information, visit www.tcia.org.

20 ISA Certified Arborist, Utility & Municipal Specialist Exams. PSE&G Training Center, South Plainfield, N.J. To learn more, call 609-625-6021 or visit www.isa-arbor.com.

20 Electrical Hazard & Aerial Rescue. Forest Resource Education Center, Jackson, N.J. For details, call 732-833-0500.

20 ISA Arborist Certification Course: Tree & Soil Relations. Casper, Wyo. To learn more, call 307-235-8309 or visit www.casperwy.gov.

20-22 Green West Expo & Conference 2008. Los Angeles Convention Center, Los Angeles, Calif. For more information, e-mail info@GreenWestExpo.com or visit www.GreenWestExpo.com.

28 Scouting for Pests and Problems of Turf and Woody Ornamentals Walkabout: Insects and Weeds. East Bridgewater, Mass. To learn more, call 413-545-0895 or visit www.umassgreeninfo.org.

28-30 National Conference on Urban Ecosystems. Orlando, Fla. For details, call 202-737-1944, ext. 238, or e-mail kcantrell@amfor.org.

June

 5 ISA Certified Arborist Exam. Fort Worth, Texas. For more information, visit www.isa-arbor.com/certification/tests.aspx.

5-7 Native Plants in the Landscape Conference. Millersville University, Millersville, Pa. To learn more, call 717-872-3030, e-mail npilc@yahoo.com or visit www.millersvillenativeplants.org.

7-10 Trees Florida Conference & Trade Show. Bonaventure Resort, Fort Lauderdale, Fla. For more information, visit www.treesflorida.com.

26 TCIA Electrical Hazards Awareness Program workshop. Ohio State University, Columbus, Ohio. For details, call 800-733-2622 or visit www.tcia.org/Public/product_ehap_seminars.htm.

July

 26-30 ISA’s 84th Annual Conference & Trade Show. America’s Center Convention Complex, St. Louis, Mo. For details, visit www.isa-arbor.com.

30 Weed Identification Workshop: Broadleaf Weeds. Arnold Arboretum, Jamaica Plain, Mass. For more information, call 413-545-0895 or visit www.umassgreeninfo.org.

August

6 Weed Identification Workshop: Broadleaf Weeds. University of Massachusetts, Amherst, Mass. For more information, call 413-545-0895 or visit www.umassgreeninfo.org.

14 ISA Certified Arborist Exam. Round Rock, Texas. To learn more, visit www.isa-arbor.com/certification/tests.aspx.

27 Weed Identification Workshop: Grassy Weeds. University of Massachusetts, Amherst, Mass. For details, call 413-545-0895 or visit www.umassgreeninfo.org.

September

 24-26 ISA-Texas 29th Annual Tree Conference. College Station, Texas. For more information, visit www.isatexas.com.

26 ISA Certified Arborist Exam. College Station, Texas. For details, visit www.isa-arbor.com/certification/tests.aspx.

October

1 Scouting for Pests and Problems of Turf and Woody Ornamentals Walkabout: Weeds and Tree & Shrub Diseases. Arnold Arboretum, Jamaica Plain, Mass. For more information, call 413-545-0895 or visit www.umassgreeninfo.org.

21-23 Green East Expo & Conference 2008. Jacob K. Javits Convention Center, New York, N.Y. For details, e-mail info@GreenEastExpo.com or visit www.GreenEastExpo.com.