Shade Tree Advocate Spring 2011

14
TREE CITY USA By: Andi Dierich Inside This Issue: Community Profile: Tree City USA 1 ? Mystery Tree ? 2 Member Profile: Emily Ball 2 The Bake-off and Christmas Networking 3 Survivors and Champions 4 Clip and Save Tree City USA 5 Tree City USA: Spotlight, Eagan, MN. 7 Volunteer Spotlight: Carol and Marty Strong 8 Urban Forest Health: Thousand Cankers Disease 10 Contacts & Calendar 13 Picture yourself standing at a table with a bunch of boxes labeled Tree City USA in a large room filled with hundreds of municipal foresters, private arborists, and enthusiastic citizen-volunteers. This was the scene at the recent 2011 Minnesota Shade Tree Short Course. Aside from the strange looks and curious stares, I was asked by more than one by-stander; “What the heck is Tree City USA all about?” If you are curious as well, read on. But first, a warning for the habitual volunteer: reading this article may induce a severe desire for action to ensure your community is Tree City USA certified. A Quick History Lesson Tree City USA is one of many programs run by the Arbor Day Foundation, the largest non-profit organization in the US dedicated to planting trees. Founded in 1972 on the centennial of Arbor Day, the Foundation strives to “inspire people to plant, nurture, and celebrate trees.” In collaboration with the USDA Forest Service and the National Associa- tion of State foresters, Tree City USA was launched in 1976. The first year Tree City USA involved 42 communities in 15 states. The first city in Minnesota to become Tree City USA certified was Fergus Falls in 1978; only two years after the program began. Since then, the Arbor Day Foundation’s programs have branched out to all 50 states plus Puerto Rico and include Tree City USA Growth Awards to recognize communities that have gone above and beyond the basic Tree City USA level, Tree Line USA for utility companies, and Tree Campus USA for colleges and universities. Advocate Spring 2011 Page 1 Continued on page 5 Community Profile Spring 2011 .. Vol. 13, No. 2 MINNESOTA TREE CITY USA COMMUNITIES 1978 THROUGH 2009 0 20 40 60 80 100 120 140 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 1 10 16 23 23 26 29 32 36 44 50 52 67 78 104 122 132 135 134 132 130 121 108 95 98 92 94 87 94 97 103 104 On the rise again, Minnesota’s Partners set a goal of 200 Tree City USA Communities by 2020.

description

This quarterly newsletter published by MnSTAC includes timely and up-to-date discussion of urban and community forestry issues, featured articles about Minnesota’s exemplary green cities, projects and volunteer efforts and a calendar of up-coming events, new publications and interesting websites.

Transcript of Shade Tree Advocate Spring 2011

Page 1: Shade Tree Advocate Spring 2011

TREE CITY USA By: Andi Dierich

Inside This Issue:

Community Profile: Tree City USA 1

? Mystery Tree ? 2

Member Profile: Emily Ball 2

The Bake-off and Christmas Networking 3

Survivors and Champions 4

Clip and Save Tree City USA 5

Tree City USA: Spotlight, Eagan, MN. 7

Volunteer Spotlight: Carol and Marty Strong 8

Urban Forest Health: Thousand Cankers

Disease 10

Contacts & Calendar 13

Picture yourself standing at a table with a bunch of boxes labeled Tree City USA in a large room filled with hundreds of municipal foresters, private arborists, and enthusiastic citizen-volunteers. This was the scene at the recent 2011 Minnesota Shade Tree Short Course. Aside from the strange looks and curious stares, I was asked by more than one by-stander; “What the heck is Tree City USA all about?” If you are curious as well, read on. But first, a warning for the habitual volunteer: reading this article may induce a severe desire for action to ensure your community is Tree City USA certified.

A Quick History Lesson Tree City USA is one of many programs run by the Arbor Day Foundation, the largest non-profit organization in the US dedicated to planting trees. Founded in 1972 on the centennial of Arbor Day, the Foundation strives to “inspire people to plant, nurture, and celebrate trees.” In collaboration with the USDA Forest Service and the National Associa-tion of State foresters, Tree City USA was launched in 1976. The first year Tree City USA involved 42 communities in 15 states. The first city in Minnesota to become Tree City USA certified was Fergus Falls in 1978; only two years after the program began. Since then, the Arbor Day Foundation’s programs have branched out to all 50 states plus Puerto Rico and include Tree City USA Growth Awards to recognize communities that have gone above and beyond the basic Tree City USA level, Tree Line USA for utility companies, and Tree Campus USA for colleges and universities.

Advocate • Spring 2011 Page 1

Continued on page 5

Community Profile

Spring

2011 ..

Vol. 13, No. 2

MINNESOTA TREE CITY USA COMMUNITIES 1978 THROUGH 2009

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On the rise again, Minnesota’s Partners set a goal of 200 Tree City USA Communities by 2020.

Page 2: Shade Tree Advocate Spring 2011

Emily Ball, City of Minnetonka By: Lara Newberger

Page 2

Mystery Tree By: Rebecca Koetter

When it comes to identification, the uninitiated will always consider trees to be a mystery. In this issue, you will be contemplating the identification of a deciduous tree that is native to Minnesota. Unlike most deciduous trees, this spe-cies if not described as excurrent, is described as narrow and conical. It is a form that adds appeal and character to the landscape. As a timber producer this species was highly sought after due to an interlocking grain that will not splinter. The interlocking grain explains why early car makers and ship builders demanded this species of wood over that of the hickories. Even to this day tool handles, furniture, bumpers or rub strips on ships and many other products are made from its lumber.

While leaves and samaras of this genus are similar across species, the unique corky bark on its 4-6 year old branches provides a strong clue to this tree’s identity.

Despite a disease issue, some consider this species to be underused as a shade tree in our urban landscapes.

Member Profile

Spring 2011 • Advocate

F ind the answer

on Page 12.

Mystery Tree

I remember talking with Emily, then Barbeau, at a MNSTAC meeting back in the Lorrie Stromme era. She started coming to MNSTAC meetings as a U of MN student. Now Emily is a MNSTAC leader, serving on the board of direc-tors, and on the Information Transfer and Forest Health committees.

Emily received her bachelor’s degree from the University of Minnesota in Urban and Community Forestry after spend-ing two years at Lawrence University in Appleton, Wisconsin that included a semester at the Biosphere in Arizona. After graduating she spent 5 months storming England, living in the rainy, yet beautiful countryside. During that time in England, Emily worked at Stourhead, an eighteenth century historic landscape garden. Upon returning to warm and friendly Minnesota, she dug in her heels in order to find an urban forestry position close to her family. The City of Minnetonka provided that opportunity.

Emily Ball has been the Minnetonka Forester since 2004. She has become a key part of an awesome natural resources team with Jo Colleran, Aaron Schwartz and Janet Van Sloun. Minnetonka forestry is well respected, thoughtful and a forward thinking program. Emily has brought a fresh perspective and new ideas to the department for community out-reach. Emily’s favorite part of her job as City Forester is being able to come up with new ideas for projects, planning them, then making it all happen. The City leadership is very open to new ideas, and Emily is grateful to be involved in projects from planning stage to completion.

Emily hopes that from the emerald ash borer crisis a new found appreciation for tree maintenance can be born. Ball envisions new

found opportunities to educate people and their cities about the virtues of maintaining their existing trees in optimum health- and emphasis swing from tree quantity to tree quality. A future park maintenance budget should include money for watering, mulching, and pruning as well as the initial step of proper planting. She is already advocating that the City stop planting trees unless they can be properly cared for.

Emily Ball’s dream job would be traveling the world exploring its woody species. Perhaps she could star as the “Landscapes of the World” travel guru - taking a deeper look at pollarding, Norway’s street

tree pruning, and learning the name for hand pruners in every port. Emily and a 16 inch dbh bitternut hickory.

Photo provided by Emily.

Page 3: Shade Tree Advocate Spring 2011

Christmas Gathering - MnSTAC Style By: Rebecca Koetter

Advocate • Spring 2011 Page 3

Emily hopes that from the emerald ash borer crisis a new found

rway’s street

#1 and #2 Chef in the Urban Forestry Community for 2011!

Thanks to everyone who participated in the 2010 MNSTAC Holiday Forum bake-off/cook-off/bring-off!! The plan was simple; anyone who brought food to share was automatically entered into the contest. Judging proved to be difficult as the dishes were many and the competition strong. Everyone who ate food became a judge and the dish with the most votes took home the bragging rites for 2011 as being the #1 or #2 chef in the Urban For-estry Community! The judging criteria for the contest simply hinged on how good the dish tasted- that's it. Seventeen individuals brought food ranging from yummy caramels to deli-cious Christmas cookies to gluten-free banana bread! No one left the forum with an empty belly as each dish was as delicious as the next.

#1- Rebecca Koetter’s winning homemade grape pie recipe.

Streusel Grape Pie

Cultivars to try: ‘Concord,’ ‘Bluebell,’ ‘Valiant’

• Wash grapes and remove skins by pinching at end opposite stem- place skins and pulp in separate bowls.

• Place pulp in a small saucepan and bring to boil; cook several minutes until it is soft. • Put through strainer while pulp is hot to remove seeds (I use a potato masher). • Mix strained pulp with skins for a rich purple color. • Stir in sugar, flour, lemon juice and salt. • Pour grape mixture over crust. • Sprinkle with oat streusel. • Place on large cookie sheet to catch spills. • Bake at 375°F for approximately 45 minutes.

Continued on page 14

Final Standings: The Winning Recipes

1. Grape pie

2. Chicken Brushetta

3. Swedish apple pie

4. Dilly beans

5. Gluten free banana bread

6. Homemade salsa

7. Cream cheese pumpkin bread

8. Peanut butter blossoms

Pie crust ½ cup salad oil ¼ cup milk ½ teaspoon salt 1 ½ cup flour

• Mix ingredients together. • Press dough in 9-inch pie

plate, shape over rim. • Bake at 350°F degrees until

golden brown.

Oat streusel ½ cup quick oats ½ cup brown sugar ¼ cup flour ¼ cup to ½ cup butter (depending on how many additional calories you want!)

• Mix together. • Set aside.

Pie filling 4 and ½ cups deseeded grapes 1 cup granulated sugar ¼ cup flour 2 teaspoon lemon juice 1/8 teaspoon salt

Photos:

Rebecca Koetter

Page 4: Shade Tree Advocate Spring 2011

Page 4

The Survivors and Champions... By: Dave Hanson

Spring 2011 • Advocate

Juglans cinerea.

Hiding in Roseville, Minnesota’s Reservoir Woods city park is a survivor, a tree that is considered to be the largest butternut in Minnesota. At 65 inches diameter at breast height (dbh) and 95 feet tall, it is difficult to get a nice form shot of this massive tree. It is inspiring to stand in the shadow of this champion. The official statistics high-light a circumference of 206 inches, a height of 95 feet and a crown spread of 96 feet. These measurements of circumference + height + 1/4 the crown spread are combined for a total score of 325 points. If two trees tie, the honor goes to the larger circumference. Unfortunately, like most butternuts in Minnesota this tree does show signs of but-ternut canker (Sirococcus clavigignenti-juglandacearum) scattered about its massive crown. In coming issues we will try to visit other communities and other “Survivors.” If you know the location of a champion tree and would like it highlighted here - send Dave Hanson a note (e-mail: [email protected]) and it is likely he will pay you and the champion a visit.

If you have a tree that you would like to nominate or you are curious about the Minnesota Department of Natural Resource’s Big Tree Registry visit:

http://www.dnr.state.mn.us/trees_shrubs/bigtree/index.html

Jason Johnson (MN DNR)

and Jason Smith (now at

the University of Florida).

Photo taken in 2004.

Dave Hanson

Page 5: Shade Tree Advocate Spring 2011

Advocate • Spring 2011

TREE CITY USA By: Andi Dierich

Page 5

2009 Minnesota Tree City USA Facts

• 53% of Minnesotan’s live in a Tree City USA community.

• Minnesota had a 92.3% recer-tification rate for Tree City USA communities.

• 4 new communities became Tree City USA certified in 2009.

• White Bear Lake was honored with the “Sterling Commu-nity” recognition. This recog-nition is given to communities that have achieved the Tree City USA Growth Award for 10 years.

How does Minnesota com-pare with the other

49 states?

• Minnesota was ranked 11th out of 52 (D.C. and Puerto Rico included) in number of Tree City USA communities in 2009.

• Ohio was at the top of the list with 249 communities, sur-passing the 2nd ranked state, Illinois, by 61 communities.

• The average expenditure was $11.04 per capita in Minne-sota Tree City USA communi-ties. This is $4.00 more than the national average for Tree City USA communities.

What is Tree City USA?

Tree City USA is a nationally acclaimed recognition program for commu-nities that have demonstrated a sustainable commitment to urban for-estry. This means that a community has achieved financial, legal and residential support for their urban forestry program. This award is granted to honor these communities and provide a visible reminder of what employees and residents value, trees. Each year the Minnesota Department of Natural Resources, Division of Forestry partners with the Arbor Day Foundation to review and ap-prove potential Tree City USA program applications. Through the dedi-cated DNR staff, MnSTAC and Tree Care Advisors, this program has been an institution in Minnesota since 1978.

Why should your community be Tree City USA certified?

Tree City USA communities have historically been recognized and sought by funders and programs on a variety of projects. These communities have demonstrated their capacity to support urban forestry programs. Their leadership is verified by the effort they have put forth in applying for the Tree City USA program. As federal and state budgets continue to decline, available funds will go to communities who have demonstrated a commitment to protect and enhance their “green infrastructure”.

How do I get my community started? In order to become a Tree City USA, there are 4 standards a community must achieve. At the end of each calen-dar year, a community must meet these 4 stan-dards to be approved or renewed as a Tree City USA community. Page 8 has a suggested timeline to follow for tracking the information your commu-nity will need.

Fill out the Tree City USA application! In the autumn, as the season winds down gather the information that you need to complete the online application. All Applications are due to the State Coordinator, Ken Holman by December 31.

Anyone from a community can

fill out and submit the

Tree City USA application.

Continued on next page

Page 6: Shade Tree Advocate Spring 2011

Page 6

TREE CITY USA

Spring 2011 • Advocate

Be one of the first in M

innesota to achieve the Triple C

rown!

• Get your com

munity certified as Tree City U

SA

• Encourage your utility company to certify as a Tree Line U

SA

• Help a local college or university certify as a Tree Cam

pus USA

http://ww

w.arborday.org/program

s/index.cfm

Does your com

munity have a Tree Board in place?

If not, Tree Board U provides training on setting up a successful tree board.

http://ww

w.treeboardu.org/

Materials for A

rbor Day can be found at::

http://ww

w.dnr.state.m

n.us/arbormonth/index.htm

l

Arbor D

ay Foundation: Tree City USA - O

nline Information and A

pplication

http://ww

w.arborday.org/program

s/treecityusa/?breadcrumb=hom

epage

Page 7: Shade Tree Advocate Spring 2011

Tree City USA: Spotlight By: Andi Deirich

Advocate • Spring 2011 Page 7

Tree City USA: Spotlight- Eagan, MN Each year Eagan city forester, Gregg Hove, other city staff and members of the Eagan Advi-sory Parks and Recreation Commission pour over hundreds of different posters looking for the perfect one to represent Arbor Day. These posters are created by about 1,000 third graders from 10 elementary schools showcas-ing the complex use and values of trees. Started in 1989 with the help of one com-pany, Thomson Reuters, the poster contest has given Eagan’s Arbor Day a whole new look. Every year, children and their parents gather to find out which poster has been chosen to rep-resent the event. This artistic and creative approach to Arbor Day has rubbed off. Gregg occasionally re-ceives posters from around the world as stu-dents from this Eagan program continue the tradition in new locations.

Help Eagan Celebrate is its 25th Arbor Day! June 8th, 2011 at the Eagan Community Center Festival Grounds.

Arbor Day events will be held in conjunction with the Eagan Market Fest and the 10 th anniversary of the relocation of the Grandfather Tree.

Stats for Eagan in 2010 65,933 – Population of Eagan $8.98 – Expenditure per capita 231 – number of trees planted in 2010 $10,000 – Value of volunteer time 24 – number of years as a Tree City USA

What is a Tree City USA: Spotlight? In an effort to raise awareness of the different urban forestry programs around the state, each Advocate issue will include one Tree City USA community that has developed a unique tool to enhance the visibility or sustainability of their program. If you would like to nominate a community for the spotlight, please send the name of the community and the contact information for a representative to Ken Holman at [email protected].

Poster by: Sky Waters, Thomas Lake Elementary School

Page 8: Shade Tree Advocate Spring 2011

Carol and Marty - A Tree Care Advisor Team

Page 8 Spring 2011 • Advocate

For those readers who may not know what Minnesota Tree Care Advisors are, they are part of an “intimate” urban and community forestry volunteer program that began in Min-nesota in 1992. The program was designed to train volunteers that could assist their neighborhoods, local communities, non-profit groups, state agencies such as the Depart-ment of Natural Resources (DNR), and the University of Minnesota Extension. The cur-riculum and program was designed by a “committee” of 42 professionals…yes, 42. It might have been 44, but I’ll remain conservative.

Now, after more than 18 years, over 400 trained volunteers, and way, way more than 50,000 documented volunteer hours later, the program is still healthy and growing…and still “intimate.” Class sizes are restricted to 20 volunteers and we are all more than volun-teer acquaintances; we are friends held together by common bonds.

The Shade Tree Advocate’s featured urban forestry “volunteer” for this issue is actually a team of Tree Care Advisors, who happen to be married and who have been some of the most involved volunteers in a very broad community, spanning more than one town and county in Minnesota. This is their story.

Carol grew up near Alexandria, Marty in Minneapolis. They started as volunteers at church in Minneapolis in the early 60's and are still involved as lectors, tax preparers for low income earners, drivers for Meals on Wheels, and hosts of foreign students/teachers among other opportunities. Their lives progressed and they started organic gar-dening on the weekends in Belle River Township near Alex fifteen years ago on 40 acres of rich lake bottom land.

They enjoyed vegetable gardening but sought out horticultural classes at the Minnesota Landscape Arboretum and the Master Gardener Program before completing the Tree Care Advisor Program.

As homeowners with a street of canopied elms, they were compelled to learn and act to preserve and replace them. And like most Tree Care Advisors, they are struck by the beauty and magnificence of trees each season of the year, the gifts of oaks, apples, plums and pine forests.

As Tree Care Advisors (TCA) they pay back, in a way, for these gifts. As Tree Care Advi-sors, interaction with people is vital. The common ground of interest… everyone they meet has a tree issue. And the people are willing, waiting, and wanting to talk about them! They find fixing people’s tree issues rewarding.

Having said all of that, their most lasting contributions to Minnesota’s urban forests, both in the metro area and the Alexandria community, are as teachers and mentors. Carol and Marty present classes on tree care and organic gardening practices, assist with the University of Minnesota Extension Helpline in Douglas County, lead commu-nity classes in emerald ash borer and Dutch elm disease detection, and are members of the Tree Care Advisor group that helps keep the program relevant and responsive to the volunteers. All of these activities add up to a yearly contribution of 75-100 hours to urban forestry programs and projects in Minnesota.

Volunteer Spotlight

Written by:

Carol and Marty Strong

Photos Provided by:

Carol and Marty Strong

Below: Carol at Douglas

County’s “2010 Let's Get

Growing Day” in Alexandria,

MN. Presenting on EAB.

Page 9: Shade Tree Advocate Spring 2011

A Tree Care Advisor Team... continued

Advocate • Spring 2011 Page 9

Can you put a price tag on volunteerism? If a price tag was sought for their contri-butions, there is a conservative measure. In Minnesota, the value of a volunteer hour has been calculated at $21.17. That accounts for replacement salary if someone was hired to accomplish the tasks, overhead, travel expenses and personal expenses associated with the projects. Now, 75-100 hours per year can be looked at a little differently: $1,500 to $2,100 per year as “in-kind” contributions to urban forestry projects, all to the benefit of Minnesota. Pro-rate that and multiply it by the many years this volunteer team has been active, and the business managers and cash-strapped communities around the state have to smile.

But, that’s not why Carol and Marty volunteer. They are inspired by the many other gen-erous volunteers who make a difference in their lives every day. As experienced volun-teers, they have learned some lessons that other volunteers and volunteer groups may use to help ensure their projects will be successful, or at least not failures.

1. How to chalk up those 25 volunteer Tree Care Advisor hours for the year? Those hours are goals, not requirements, but they are worthy goals. It may be as easy as talking to your next door neighbor and helping them solve a tree issue. Carol and Marty have found success as volunteers by putting themselves out on the street, not waiting for opportunities to find them.

2. Let others in on solving problems and share the credit. This is sometimes difficult on the ego. But the resulting love and growth is something to experience and behold! Plus, new volunteers are often added to the “fold” when they feel they are respected and included.

3. Hard work and being open to new ideas and processes from others is a real aid in solving tough problems, learning from them and being more ready the next time that problem comes up.

4. Keep learning. Learn from classes and learn from experiences by taking chances.

Carol and Marty plan to continue as Tree Care Advisors and Master Gardeners in Douglas County and the Twin Cities and to be involved in Community Education Classes. They want to stay active learners and seek ways to get the word and helping hands out to those in need. It’s a great reward for them!

The “team” presenting an EAB talk at Mount Carmel Lutheran in Northeast Minneapolis.

Page 10: Shade Tree Advocate Spring 2011

Thousand Cankers Disease (TCD) of Black Walnut

Thousand cankers disease (TCD) occurs on walnut trees and is caused by a fungus carried by an insect. TCD has been reported in western and southwestern United States and in Tennessee. As the disease spreads eastward, it threatens eastern black walnut (Juglans ni-gra) in its native range, which covers all or parts of over 30 states, including southeastern Minnesota (green area on the map below).

On February 23, the Commis-sioner of Agri-culture signed into effect an emergency state exterior quaran-tine to restrict materials enter-ing the state that could be carry-ing the disease.

What is thousand cankers disease? Thousand cankers is a disease that affects several kinds of walnut trees (Juglans species) and is caused by a fungus carried by an insect. Smaller than a grain of rice, the walnut twig bee-tle (Pityophthorus juglandis) (Figure 2a) enters the bark, making a tiny hole. The fungus (Geosmithia morbida) is introduced to the walnut tree as the beetle feeds on and tunnels into the inner bark (Figure 2b). The bark and phloem are killed by the fungus, causing a canker which is visible only if the bark is removed (Figure 3a). With thousands of beetle attacks, the number of cankers increase, (Figure 3b) eventually girdling and killing the branch or trunk. Death may occur in susceptible walnut species.

Where is thousand cankers disease? At this time the disease is known to occur in western and southwestern United States and in Tennessee (pink states on the map above). Southwest United States and Mexico are thought to be home of the original host of this insect/fungus complex, the Arizona walnut (Juglans major). While this species suffers little damage from the disease, eastern black wal-nut (Juglans nigra) is very susceptible.

Spring 2011 • Advocate Page 10

Urban Forest Health

CONTACT: Kathryn Kromroy,

Research Scientist

651-201-6343 , [email protected]

Quarantine prevents

import of walnut trees

and wood from states

infested with Thousand

Cankers Disease

625 Robert St. N. St. Paul, MN 55155-2538 651-201-6629 1-800-967-2474 www.mda.state.mn.us

An Equal Opportunity

Employer and Provider

TDD: 1-800-627-3529

Map created by: Alison Rossow and Erich Borchardt, MDA, March 2011

Range: Juglans nigra

Range: Juglans major

Distribution of Thousand Cankers

Page 11: Shade Tree Advocate Spring 2011

Advocate • Spring 2011

Thousand Cankers Disease (TCD) of Black Walnut

Page 11

Why do we care about thousand cankers disease? Eastern black walnut is highly valued for lumber and veneer, nut meat indus-tries in some states, and wildlife food. It is also an important tree along rivers and streams. The USDA Forest Service estimates that over 200 million eastern black walnut trees occur across its native range. Most eastern black walnut trees grow in natural stands of mixed hardwoods, with plantations accounting for only about 1% of the total volume. Walnut trees in landscapes grow as far north in Minnesota as Hibbing. In Minnesota, we are most concerned about the potential threat to eastern black walnut that occur naturally and in plantations in southern Minnesota. Our state has about 6,000,000 eastern black walnut trees, with one to two million board feet of walnut wood harvested annually. Being on the northern edge of the native range, our trees tend to grow more, resulting in wood qualities that increase its value compared to wood from more southern areas. A close rela-tive to eastern black walnut, butternut (Juglans cinera) also occurs in Minnesota, but the butternut’s susceptibility to TCD is not known.

What are we doing about thousand cankers disease? MDA is working to protect the state’s black walnut resource by preventing the introduction of TCD into Minnesota using regulation, outreach and early de-tection. The highest risk pathway for TCD movement is in walnut wood with bark on. Minnesota Agriculture Commissioner Dave Frederickson issued a temporary exterior quarantine restricting movement of products potentially harboring TCD from those states and from other potentially infested areas into Minne-sota. The list of walnut products covered by the quarantine includes: live wal-nut trees, walnut logs, walnut lumber, walnut firewood, walnut nursery stock, wood chips and mulch made from walnut wood, walnut branches and roots, and packaging materials made from walnut wood. The quarantine does not ap-ply to walnut nuts, nutmeat, walnut hulls, finished products made from walnut wood without bark, or processed lumber that is 100 percent bark-free, and kiln-dried with square edges. MDA will seek public comment prior to replacing this temporary quarantine with a formal quarantine. That formal quarantine may contain additional or different conditions based on information offered by the public. We are collaborating with our partner agencies and doing outreach to our many stakeholders, including walnut growers, millers, loggers, nursery opera-tors, woodlot owners and tree care companies. TCD is one of the tree diseases taught in the First Detector Training program. MDA is collaborating with the U.S. Forest Service Northern Research Station in a targeted survey to locate walnut trees in Minnesota that are showing unex-plained dieback. In addition to serving as an early detection tool now, we hope the survey identifies sites for future trapping once a lure for the beetle is devel-oped. Our emerald ash borer firewood inspectors have added walnut to their list of targeted species.

Figure 2a. Walnut twig beetle (Pityophthorus juglandis) Whitney Cranshaw, Colorado State University

Figure 2b. Entry/exit holes and tunneling of the walnut twig beetle, Whitney Cranshaw, Colorado State University

Figure 3a. Canker surrounding beetle tunnel.

Ned Tisserat Colorado State University

Continued on page 12

Page 12: Shade Tree Advocate Spring 2011

Mystery Tree Answer

How can I tell if a walnut tree has thousand cankers disease? A tree can have TCD for six to eight years before symptoms appear in the crown. Early crown symptoms include thinning, small leaves, yellow, brown or wilting leaves.

Once a tree is actively wilting, you may see signs of the beetle and cankers under the bark of wilting branches as shown in Figures 2 and 3 above.

If you see a tree or stand of trees that you think might have thousand cankers disease, contact Kathy Kromroy at the Minnesota Department of Agriculture. Phone 651-201-6343. Email [email protected]

Spring 2011 • Advocate

Thousand Cankers Disease (TCD) of Black Walnut

Page 12

Mystery Tree

The author’s identity is a strong

clue and most know that the

name Mark Stennes is

synonymous with elm.

So, there should be no surprise

that the mystery tree is an elm:

Rock Elm (Ulmus thomasii).

Unfortunately, our generation

and those to come will likely not

encounter the pure stands of

rock elm that the early settlers

experienced due to its suscepti-

bility to Dutch elm disease.

Minnesota Department of Agriculture, Plant Protection Division Press Release Regarding Quarantine of Black Walnut Products: http://www.mda.state.mn.us/news/releases/2011/nr-2011-02-24-canker.aspx

Minnesota Department of Agriculture, Plant Protection Division: Web Pages Regarding Thousand Canker Disease of Black Walnut http://www.mda.state.mn.us/plants/plantdiseases/1000cankers.aspx

Minnesota Department of Agriculture, Plant Protection Division: Web Pages http://www.mda.state.mn.us/plants.aspx

Authors note: Information for this article was obtained from a variety of sources, including publications of and personal

communication with numerous entomologists, plant patholo-gists and foresters with the US Forest Service, Minnesota

Department of Natural Resources, Colorado State University, and the University of Minnesota.

Figure 3b. Cankers coalesce to create

large dead areas visible under the bark,

Ned Tisserat Colorado State University

Pointed buds

Corky twigs

Doubly-toothed leaves

Photo: Dave Hanson

Leaf and samara Photo:

Mark Stennes

Page 13: Shade Tree Advocate Spring 2011

The Minnesota Shade Tree Advisory Committee (MnSTAC) was established in 1974 by a group of concerned citizens to address the health and well being of community forests. MnSTAC is recognized throughout Minnesota and the country for its ex-pertise, advice, coordination and support for com-munity trees. It is an organization of diverse indi-viduals who represent a broad spectrum of tree-related interests. It fosters and supports local com-munity tree programs across the state so healthy community forests are fully integrated into commu-nity development, infrastructure, education and management.

MnSTAC Board of Directors

May 20, 2011

Rochester Arborist Workshop, Tree Dissection Clinic Rochester, MN Rochester Arborist Workshop: RAW

May 20 and 21, 2011

Minnesota Forestry Association’s Family Spring Field Days http://www.minnesotaforestry.org/

May 26, 2011

New Tree Inspector Training, TIES, Saint Paul

www.mntreeinspector.com September 12, 2011

Urban Tree Growth International Meeting and Research Symposium at Morton Arboretum More Information

Great River Greening www.greatrivergreening.org

International Society of Arboriculture www.isa-arbor.com

Minnesota Landscape Arboretum www.arboretum.umn.edu

Minnesota Nursery and Landscape Association

www.mnla.biz

Minnesota Society of Arboriculture www.msa-live.org

Minnesota Turf and Grounds Foundation

www.mtgf.org

September 15, 2011

MnSTAC General Member Meeting www.mnstac.org

October 27, 2011

MnSTAC Board Meeting www.mnstac.org

Click here for a list of events from: USDA Forest Service, Northeastern Area, State and Private Forestry, Urban and Community Forestry.

Upcoming MnSTAC Forums Third Thursday of the Month

10:00 to 11:00 am

May: Katie Himanga Writing effectively for City Councils

and Planning Commissions. http://www.mnstac.org/

Tree Board University www.treeboardu.org

Tree Care Advisor Program www.mntca.org

Tree Link www.treelink.org

Tree Trust www.treetrust.org

Urban Forestry & Horticulture Institute: University of Minnesota

www.trees.umn.edu

Urban Forestry Index, UFIND http://urbanforestryindex.net/

About MnSTAC Calendar and Web

Page 13 Advocate • Spring 2011

Urban Natural Resources Institute: An initiative of the USDA Forest Service Northern Research Station. E-learning Webcasts Archive: www.unri.org/webcasts/ To subscribe: www.unri.org/e-news/

Bob Tomlinson Steve Shimek Tina Markeson Alan Ek Jeffrey Gillman Andrea Dierich Glen Hambleton Jim Vaughn Steve Roos Dave Kleinhuizen Larry Westerberg Barb Spears Anne Oldakowski Craig Johnson Emily Ball Kameron Kytonen Steve Nicholson Dave Auchter Kit Richardson Karen Zumach John Ingleman Ron Norenberg James Lemmerman Dave Moehnke Jill Johnson, Ex-officio Ken Holman, Ex-officio Ken Simons

Minnesota DNR Minnesota Dept. of Ag. Minnesota DOT University of Minnesota University of Minnesota University of Minnesota Minnesota Tree Care Advisor MN Society of Arboriculture American Society of Landscape

Architects MN Nursery and Landscape

Association Society of American Foresters MN Forestry Association MN Assoc. of Soil, Water and

Conservation Districts League of MN Cities City of Minnetonka City of Andover Consulting Forester Utility Forester Local Tree Board Member Tree Trust Hutchinson Technology Inc. Citizen at Large, DNR Region 1 Citizen at Large, DNR Region 2 Citizen at Large, DNR Region 3 U.S. Forest Service Minnesota DNR Parliamentarian

President: Katie Himanga

Webinar (archived): "Here Today – Gone Today: Mecha-nized Removal & Processing of Urban Trees" https://umconnect.umn.edu/p78694155/

Webcasts from the Alliance for Community Trees: First and third Thursday of every month: Noon-1:00 pm Get the schedule, sign up to watch, or view archived webcasts at: http://actrees.org/site/resources/webcasts/

Books: Campus of Trees: Winona State University, Authors: Tom Grier and Bill Meyer. Contact: Tom Grier, Winona State University, P.O. Box 5838, Winona, MN 55987

Remarkable Trees of Virginia, Authors: Nancy Ross Hugo and Jeff Kirwan. Photography: Robert Lewellyn

DVD available for the Hmong community Conservation, Education DVD: “The Wildlife and Wilderness Exploration Show“ Contact: David N. Bengston, Ph.D., Northern Research Station, USDA Forest Ser-vice, 1992 Folwell Ave., St. Paul, MN 55108 USA, EMAIL: [email protected]

Web Sites: EAB University: Learn more about invasive pests and diseases by tuning in to the Emerald Ash Borer University. http://www.emeraldashborer.info/eab_university.cfm

Scientific Literature Review: Dr. Kathleen Wolf, University of Washington Nature Improves Human Health and Well-being. http://www.greenhealth.washington.edu

MnSTAC Report to the State of Minnesota http://www.mnstac.org/documents/Inv_Spp_thrt_report_2011_FINAL.pdf

Webs of Interest:

Page 14: Shade Tree Advocate Spring 2011

Photos:

Rebecca Koetter

Christmas Gathering... Continued from page 3

Minnesota Shade Tree Advocate

A quarterly newsletter pub-lished by the Minnesota Shade Tree Advisory Committee

Managing Editorial Group:

Mary Berthiaume, Ken Holman,

Rebecca Koetter, Karl Mueller,

Lara Newberger, Jacob Ryg, and Mark Stennes.

Editor: Dave Hanson

Material in this newsletter is not copyrighted. Reproduc-tion for educational purposes is encouraged. Subscriptions are free. Articles, news items, photos and videos are wel-come. This publication was pro-duced with the support of the USDA Forest Service, North-eastern Area; State and Private Forestry. Address inquiries to:

Minnesota DNR Division of Forestry 500 Lafeyette Road Saint Paul, MN 55155

Spring 2011 • Advocate Page 14

#2- Second place was taken by Jennifer Miller with her Chicken Bruschetta dish served as a topping for slices of French bread. Her award-winning recipe is below: Chicken Bruschetta Add all ingredients together until coated with oil and balsamic vinegar:

4 cups spinach, chopped 8 slices of sun-dried tomatoes, chopped 2 Italian dressing marinated chicken breasts,

chopped 6 oz crumbled feta cheese Slices of black olives (optional) 1/4 cup olive oil Add balsamic dressing to taste

Then, enjoy! Social Time! Besides the bake-off/cook-off/bring-off, thanks to everyone who came to this annual forum to mingle, share and meet! A couple of pictures to highlight the social aspect of this great organization!

Sorry No Picture!

Left to right:

Gary Johnson

Emily Ball

Gail Nozal

Ralph Seivert

Left to right:

Kameron Kytonen

Andi Dierich

Phil Potyondy

And

The Hat