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ONLINE REGISTRATION NOW CLOSED Super Tuesday: Trees-Understanding Needs & Problems
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ONLINE REGISTRATION NOW CLOSED Super Tuesday: Trees-Understanding Needs & Problems

In this workshop you will gain a better understanding of how to choose and care for trees in Minnesota's climate. Presenters will also provide the latest information on tree pest issues, including Emerald Ash Borer and Oak Wilt.

When: 1/12/2016
8:00 AM
Where: Minneapolis Convention Center
1301 2nd Avenue S.
Minneapolis, Minnesota  55403
United States
Contact: MNLA

Online registration is closed.
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Trees: Understanding Needs and Problems to Maximize Value 

Date: January 12, 2016

Check in:  7:30 a.m. (Lobby D)

Program:  8:00 a.m. - 3:00 p.m.

Location: Minneapolis Convention Center, 1301 2nd Avenue S, Minneapolis, MN 55403

Trees have a public value that goes well beyond the shading and cooling effects that are produced by healthy tree canopies. In fact, some estimates put the value of a mature tree between $1,000 and $10,000 dollars because the benefits of trees are so great. Additional benefits that trees provide include increasing property values, carbon sequestration and oxygen emission, and reduced runoff or erosion. Maximizing the value of trees means choosing/caring for them correctly. In this workshop you will gain a better understanding of how to choose and care for trees in Minnesota's climate.


Time  Topic and Speaker
8:00 AM

A Reasonable Approach to Landscape Diversity: Gary Johnson, University of Minnesota

The Upper Midwest is experiencing yet another genetic house cleaning courtesy of another uninvited guest: emerald ash borer. Along with this comes the renewed cry for genetic diversity as a modus operandi for sustainable landscapes. Unfortunately, the 30:20:10 rule that is so highly promoted may in reality be somewhere between inadequate and unattainable, depending on the situation. This session will dwell on what would be considered a reasonably-diverse landscape, based on the site criteria and a crystal-ball prediction of future assaults on the trees and shrubs of Minnesota.

9:00 AM

Young Tree Care - From Propagation to Permanent Canopy: Chad Giblin, University of Minnesota

Young tree care really begins at the moment of propagation; from seedling, rooted cutting or grafted or budded tree. Many professionals are working with trees of varied ages and must address the unique needs of each generation carefully and at the right time for the best outcome. Young trees have very different maintenance requirements than their mature counterparts. This presentation will cover some of the basic needs for young trees from the moment they germinate to the time that they have established permanent, structural canopy in the landscape. Topics will include establishment, tree protection, staking and training and developmental pruning.

10:00 AM

Emerging Diseases in the Minnesota Landscape:  Brett Arenz, University of Minnesota

Arenz will give a brief background on the Plant Disease Clinic, the role we play in the National Plant Diagnostic Network (NPDN) and best practices regarding sample submission. I will also discuss tree disease issues we see commonly at the PDC and emerging pathogens that we are on the lookout for in Minnesota.

11:00 AM

Ten ideas about Emerald Ash Borer that May or May Not Be True: Brian Aukema, University of Minnesota

The emerald ash borer was first discovered in North America near Detroit, MI in 2002 when thousands of ash trees began dying in southeastern Michigan. It had likely been introduced to the area at least 10 years prior. Since that time, the insect has continued to spread, threatening to extirpate the North American genus of Fraxinus. Similar to other emerging critical invasive species, the propulsion of such a critically emerging issue to the forefront of policy and social consciousness frequently bestows almost mythical capabilities on the new pest. Conflicting messages and management goals pose nuanced challenges for policymakers. Moreover, so-called “experts” emerging from the woodwork may voice disparate, even conflicting, opinions – especially when economic interests are at stake. In this presentation, I draw upon science and management experience to address ten of the most prevalent myths about EAB.

12:00 PM Lunch
1:00 PM

Oak Wilt Management: Can It Get Any Better?: Jennifer Juzwik, University of Minnesota

Current oak wilt control tools or tactics and known effectiveness of each will be presented in this session. In addition, there will be discussion of how to sample from suspected oak wilt trees and what diagnostic tools are available to plant disease clinics to confirm the oak wilt fungus. Finally, mention will be made of current research and development being conducted on improving diagnostics and control methods.

2:00 PM Panel Discussion: All speakers who remain available.

Speaker Biographies:


Chad Giblin is a Research Fellow in the Department of Forest Resources at the University of Minnesota. His research and outreach is focused on exploring new species and alternative nursery production and planting practices to enhance establishment and long-term success of young trees in urban and community forests. Chad also leads the Forest Resources team on the UMN Elm Selection Program, which is focused on selecting, cloning, and screening Minnesota-native American, red, and rock elms as well as elms from worldwide sources for Dutch elm disease tolerance and suitability for the landscapes of the future.

Jennifer Juzwik has been a Research Plant Pathologist with the U.S. Forest Service in St. Paul, MN, since 1989. Prior to that, she worked as the provincial Forest Pathologist for the Ontario Ministry of Natural Resources in Canada for five years. Oak wilt was the topic of her PhD research at the University of Minnesota and it continues as one of her research focus areas today. Her recent research has been on chemical management of the disease and development of improved diagnostic tools for operational plant disease clinics.


Brian Aukema likes trees, and spends most of his time trying to figure out how to outsmart the insects that eat them. Brian directs the Forest Insect Ecology laboratory in the Department of Entomology at the University of Minnesota. Brian and his students work on a variety of native and invasive pest issues, such as the emerald ash borer, gypsy moth, walnut twig beetle, eastern larch beetle, and mountain pine beetle. He grew up on a farm 100 miles from the epicenter of the discovery of emerald ash borer in Michigan, and has been waiting for emerald ash borer to kill the last tree there for the last 13 years.

Teaching Assistant Professor (Plant Pathology, UMN) and Director of Plant Disease Clinic

Professor/Extension Professor
Urban and Community Forestry
University of Minnesota

This program qualifies for the following ISA CEUs:

A Reasonable Approach to Landscape Diversity; Speaker: Gary Johnson -- Certified Arborist: 1; BCMA - Practice: 1; Municipal Specialist:1.  Young Tree Care; Speaker: Chad Giblin -- Certified Arborist: 1; BCMA - Practice: 1; TW Aerial Lift Specialist:1; Municipal Specialist: 1.  Emerald Ash Borer Update; Speaker: Brian Aukema -- Certified Arborist: 1; BCMA - Science: 1;  Municipal Specialist: 1. Oak Wilt; Speaker: Jennifer Juzwik -- Certified Arborist: 1; BCMA - Science: 1; Municipal Specialist: 1

Morning coffee and lunch are included with your registration.

Sponsored by:  

Note: Super Tuesday registration is separate from Northern Green Expo registration. To register for the Northern Green Expo, visit:

 MNLA/MTGF Registration Refund Policy: For all MNLA/MTGF education events, MNLA/MTGF will gladly make a full refund of your registration fee if cancellation notice is received more than two business days in advance of the event. In the two business days prior to the event, a 50 percent refund will be given. No refunds will be given for no-shows or cancellations made the day of the event. Cancellations may be made in writing, by fax, or by telephone call received at the MNLA office during normal business hours.

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