What is Urban and Community Forestry?

The urban forest includes all of the natural resources in an urban area – plants, soil, water, animals – and is often referred to as the “green infrastructure” of a community. Any residential, commercial or institutional community that has public services – streets, curbs, utilities – is considered an urban area, in contrast to a rural area. Urban forestry is […]

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Tree Stem Protection

Benjamin K. Cooper, Undergraduate Research Assistant * Gary R. Johnson, Associate Professor, Urban and Community Forestry * Tree stem protection, commonly referred to as tree wraps, can serve two basic functions: stem protection from physical (mechanical) damage and modify the stem’s ambient environment. Physical or mechanical protection may protect the stem from equipment, animal, vandalism and herbicide damage. The stem-ambient […]

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How Much Does it Cost to Water This Tree?

View as a PDF: How Much Does it Cost to Water this Tree? By: Adam Flett, Department of Forest Resources Extension and Outreach, University of Minnesota Technical Advisors: Gary Johnson, Department of Forest Resources and John Lamb, Department of Soil, Water and Climate Water is a biological necessity for all trees, whether in a landscape or woodland setting and must […]

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Fitting trees and shrubs into the landscape

Extension’s Mike Zins has an online publication about choosing trees and shrubs for landscape plantings. Excerpt: It is important to have an idea of the approximate size at maturity of the trees and shrubs commonly used in landscape plantings. Mature size is greatly influenced by the length of the growing season, temperature, light, water, soil type, fertility, and many other […]

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Planting depth study

Effects of Various Planting Depths on Tree Health and Root Systems By Katie Frerker Study Background Since 1994, a number of different studies have been performed that looked at the correlation between depth of soil over roots and the health of trees and root systems. The results showed that soil depths of more than 1 inch over the first main […]

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Minnesota Tree Inspector Program

The Minnesota Certified Tree Inspector program has a new website:  http://www.mntreeinspector.com/ The MN Certified Tree Inspector program was implemented in 1974 in response to Dutch elm disease and oak wilt. Since then, hundreds of communities, municipalities, and private tree care companies have staffed more than 800 certified tree inspectors in Minnesota. It is now administered by the Department of Natural […]

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Finding tree care help: Certified arborists and MN Tree Care Advisors

The following links are useful when looking to hire an arborist or find out more information on arborists. For information on hiring a tree care professional visit:  Hiring an Arborist. This page provides information on when a professional should be hired and important considerations when choosing one. To find a certified arborist in your area visit:   ISA Certified Arborist Search. […]

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Protecting Trees From Construction Damage

A Homeowner’s Guide This publication by Gary R. Johnson discusses construction damage to trees.  It explains how trees can be damaged, symptoms of damage, how to minimize construction damage to you trees, how to minimize damage by planning ahead, and which trees are most tolerant to construction. View the publication: Protecting Trees From Construction Damage: A Homeowner’s Guide. Emily HansonEmily […]

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Sidewalk and Tree Conflicts

To Care for Trees IS to Care for Sidewalks By Becky Mellentin and Lorrie Stromme, reviewed by MPRB. Based on research from May through July, 2000, by Northeast Minneapolis residents and property owners, and with cooperation from Minneapolis Public Works, the Minneapolis Park & Recreation Board and its Forestry Division. Work on public sidewalks, curbs, and driveways by City-hired and private […]

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