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Water your trees the equivalent of about one inch of rain every week. Some trees will need more, others less. Water slowly to allow for adequate soaking.



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Tree Risk Assessment Course and Exam: Redmond WA, May 10-11         Tree Risk Assessment Course and Exam: Redmond WA, June 11-12         Tree Risk Assessment Course and Exam: Coquitlam BC, Apr 26-27         ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Arborist, Utility Specialist, Municipal Specialist Exam and ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Arborist, Utility Specialist, Municipal Specialist Exam and ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Arborist, Utility Specialist, and Municipal Specialist Exam         ISA Certified Arborist, Utility Specialist, and Municipal Specialist Exam         ISA Certified Tree Worker Climber Specialist Exam         ISA Certified Arborist, Utility Specialist, Municipal Specialist Exam and ISA Certified Tree Worker Climber Specialist Exam         Tree Risk Assessment Course and Exam: Spokane WA, May 10-11         Tree Risk Assessment Course and Exam: Oregon City OR, Mar 29-30         Tree Risk Assessment Course and Exam: Coquitlam BC, Feb 27 - 28         ISA Certified Arborist, Utility Specialist, and Municipal Specialist Exam         ISA Certified Arborist, Utility Specialist, and Municipal Specialist Exam         ISA Certified Arborist, Utility Specialist, and Municipal Specialist Exam         Tree Climbing World Championships 2012         ISA 2012 Portland Oregon         ISA 2012 International Conference Call for Papers Online Submission         Tree Risk Assessment Course and Exam: Redmond WA, March 19-20         ATC2011 Conference Registration Ends Tomorrow         ATC2011 Conference Registration Ends in 1 Weeks         ATC2011 Conference Registration Ends in 2 Weeks         September Tree Link News         ATC2011 Conference Registration Ends in 3 Weeks         20th annual Tour des Trees to raise money for tree research and education         Priscilla C. Esplin Women in Arboriculture Scholarship         August Tree Link News         July Tree Link News         TREE Fund Research Update: Lingering Ash Survivors of the Emerald Ash Borer Invasion         Urban Tree Growth An International Meeting and Research Symposium         Bronze Level for Donations Honor for PNW-ISA         PNW-ISA 32nd Annual Training Conference 2011         June Tree Link News         March Tree Link: Urban and Community Forestry News from the Washington State Dept. of Natural Resources         Landscape Horticulture and Arboretum News         Time for the next conference - ATC 2011 Here we come!         September 2010 Tree Link         Inland Northwest Green Industry Series 2010         New Bylaws for the PNW-ISA         Mark Chisholm wins International Tree Climbing Championship         PNW-ISA 31st Annual Training Conference : Life in the Trees         PNW-ISA 31th Annual Training Conference - Life in the Trees         Tree Protection Handbook         June 2010 Tree Link News Bulletin         Certified Arborist Directory         PNW Trees Newsletter         Certified Arborists Promotional Directory         Arborist Study Program coming in 2010         Persuasion and the Benefits of Urban Trees         2009 Partners in Forestry National Conference         Partners in Community Forestry Conference 2009         PNW-ISA Tree Care Guide         7 Reasons to Hire an Arborist         Let Us Help Select Your PNW-ISA Certified Arborist         Guidelines for Correct Pruning         Tree Tips         Did You Know?         Did You Know?         Hazard Tree Prevention Website