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Managing Change in Our Community Forests: a Toolkit for Action

Managing Change in Our Community Forests: a Toolkit for Action Oregon Community Trees Thursday, June 4, 2015 from 8:00 AM to 4:00 PM (PDT) Portland, OR Invasive pests, changing climate regimes and increased urban density will cause changes in our urban forests in the coming years. What tools and strategies can managers use today to help our community forests adapt? This one-day conference will provide participants with a toolkit full of possibilities, based on the most recent research in our…

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How many leaves on a tree?

Many think about leaves in the fall, but what about spring when trees come out of dormancy and have to bud out all those leaves. As for the number, I have seen estimates as high as 7 million and as low as 20K for a mature tree. My guess it is probably around 200K on a large mature tree.  Do you know a good source to measure the number of leaves.  My favorite was from Georgia Gardner Walter Reeves for the simplicity. Below are some sources. Do you have a better source? The photograph is from…

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Removal of burlap from B & B trees WHY??????

When planting B &B trees I have come across the instructions in reputable aboriculture books, etc. which recommend removing at least the top half of burlap from the ball.  I can not find the reason WHY.  Yes, I assume that it helps the roots get started into the surrounding soil more quickly than if the burlap was left on---BUT--I can find no research (including the ISA of which I am a member) that tells WHY or IF this is important.   Does anyone have experience that would inform me?  Thank…

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15 Replies · Reply by Jim Binns Apr 1

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Thursday, June 4, 2015 from 8:00 AM to 4:00 PM (PDT)

Portland, OR
Invasive pests, changing climate regimes and increased urban density will cause changes in our urban forests in the coming years. What tools and strategies can…
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