Iowa Tree Steward Newsletter by dfgh4bnmu


									         . I
    August 2007
    Volume 3, Issue 2        Iowa Tree Steward Newsletter
                                 ISU, Forestry Extension/ 515-294-6739 or 515-294-1168
  Special Interest
                                Summer 2007 Update!
                               I am pleased to announce yet another successful group of Iowa Community Tree Stewards have
  • Plant Disease Clinic       graduated this year’s program.
                               Fifty-three Polk County and Linn County residents completed the Iowa Community Tree Steward
  • New DNR District           Program.
                               Jim and Mary Bernau, Altoona; Ryan Burlingame, Waukee; Jennifer Darling, Urbandale; Cindy
  • Autumn Blaze               Dengle, West Des Moines; Janet Doty, West Des Moines; Linda Dugan, Des Moines; Will
    Maple                      Ekwall, Waukee; Will and Mary Farlow, West Des Moines; Christie Flickinger, Des Moines; Rick
                               Hanson, Redfield; Cheryl Hood, Runnels; Wayne Kautzky, Colfax; David Kent, Des Moines;
  • Tree I.D. Quiz              Douglas and Beverly Kern, Johnston; Val Meadows, Des Moines; Mary Noss Reavely, Des
                               Moines; Virginia Soelberg, Johnston; Chad Sutherland, Winterset; and Cheryl Thompson, Des
  • 2008 Tree Steward          Moines.
                               Michael Anderson, Cedar Rapids; Martin and Sandra Augustine, Robins; Margaret Birmingham,
 Individual                    Marion; Karen Book, Marion; Wilfred and Katherine Carew, Cedar Rapids; Thea Cole, Mount
 Highlights:                   Vernon; Mike Duggan, Cedar Rapids; Pat Ervin, Marion; Terry Jackson, Cedar Rapids; Gloria
                               Johnson, Cedar Rapids; Betty Johnston, Cedar Rapids; Lori lane Klopfenstein, Cedar Rapids;
   EAB               2          Jackie MacLaren, Cedar Rapids; Sunshine McDonald, Cedar Rapids; Karla McGrail, Cedar
   Autumn Blaze      4         Rapids; Jon and Jay McWhinney, Marion; Karmin Mullins, Center Point; Fran Potratz,
                               Marion; Martha Rasmussen, Alburnett; Paula Schulte, Cedar Rapids; Carol Sears, Cedar
   Tree I.D.         5         Rapids; Gary and Judy Stevens, Cedar Rapids; Susie Stutterheim, Marion; Kevin Weiss, Cedar
   Programs          5         Rapids; and Cathy Wyatt, Cedar Rapids.

   Useful Links      6         Congratulations to this year’s graduates! Let’s keep those volunteer hours coming in.
                               Tivon Feeley
                               Forestry Extension
Thank you to everyone          Department of NREM
that has completed his         339 Science II
or her 24 hours of             Ames, IA 50011
volunteer service. If
you have not had the
chance to send in            Tree Identification Quiz
hours, or you have
hours beyond the 24,          Every Tree Steward should keep practicing
please send them. We          their tree identification skills, so here is one
keep track of these           for you to identify.
hours and use them to         This tree has simple opposite to subopposite
gain and maintain             bluish green leaves and is not a native to the
funding for the program.      United States. The answer is on page 5.
Just simply write down
a brief description of the
project and approximate
number of volunteer
hours and mail, fax, or
email them in.
                                  Iowa Community Tree Steward                                  Page 2 of 6

New DNR District Forester Eager to Begin
      Greetings everyone! My name is Joe Herring, and in August I will take over for the
      recently retired Bob Hibbs as District Forester in Marshalltown. I am both honored and
      excited to begin this tremendous new journey.
      I grew up in Earlham, Iowa and received a B.S. in Forestry and M.S. in Water Resources
      from Iowa State University. Although the Western U.S. can be tempting to a forester just
      out of school, I’ve always preferred the diverse natural resources and people of my
      home state. My wife Emily is also from Iowa and is a naturalist with the Hardin County
      Conservation Board in Iowa Falls.
                                   For the past 14 months I have been working in the
                                   Watershed Improvement Section in the DNR’s central
                                   office. This experience has provided me with a unique
                                   perspective on managing Iowa’s landscape for water
                                   quality objectives, but has made me more eager than ever
                                   to get out in the field and work with landowners one-on-
                                   one. My other experiences include working as a Research
                                   Associate and Instructor in the Natural Resource Ecology
                                   and Management Dept. at ISU, managing our family’s 110-
                                   acre timber in Ringgold County, and private woodland
                                   In District 3, I will cover Jasper, Poweshiek, Iowa, Story,
                                   Marshall, Tama, Benton, Grundy, Blackhawk, and
                                   Buchanan counties. This is a large and diverse district
                                   with four great river valleys spanning it. I look forward to
                                   getting started and if you’re a landowner in my area, I hope
                                   to hear from you soon!

  Stay Up-to-Date With the Emerald Ash Borer
                                       Iowa Community Tree Steward                                             Page 3 of 6

Plant Disease Clinic Changes and Update

       Christine Engelbrecht
       The ISU Plant Disease Clinic is undergoing big changes! We have recently merged with the ISU
       Insect Clinic to become the ISU Plant and Insect Diagnostic Clinic, a collaboration between the
       departments of plant pathology, entomology, agronomy, and horticulture. The newly integrated
       Clinic is a one-stop shop for diagnosis of and information about plant disease, insect, and weed
       problems. We hope the combined format will help us better serve our diverse clientele.
       It’s been a busy summer so far in the Clinic, but the majority of tree samples do not show any
       evidence of an infectious disease or insect problem. The tough weather this spring (warm
       temperatures, followed by an April freeze, followed by wide temperature and moisture level
       fluctuations, and lots of wind) resulted in a variety of stress problems for trees. Most noticeable
       were browning of new growth on spruces and other conifers, dry brown spots and tattering on
       many maple leaves, and marginal leaf browning on ash.
       This has been an especially active summer for apple scab on crabapple. Other common
       diseases that we’re seeing in the Clinic at the usual levels include Rhizosphaera needle cast on
       spruce, Diplodia tip blight on Austrian pine, oak wilt, ash rust, hawthorn rust, Verticillium wilt on
       maple and catalpa, and Dutch elm disease. Common insect problems include galls on a variety
       of trees and spruce spider mites on conifers. Luckily, the biggest newsworthy insect problem—
       Emerald Ash Borer—has not been found in Iowa yet.
       The Clinic exists for you. Always feel free to contact us at 515-294-0581 or

Dutch Elm Disease- It’s Still Out There

       A common question that arises is whether we have
       come up with anything new to manage Dutch Elm
       Disease since the 1930s. The most important control
       measure has stayed the same. Diseased trees should
       be removed promptly. Diseased limbs with the bark
       attached should not be used as firewood because it
       serves as a breeding site for beetles. Current evidence
       shows that wood chips from infected trees does not
       pose a risk and can be used as landscape mulch.
       More information about Dutch Elm Disease can be
       found in the Iowa State University bulletin SUL 4,
       "Dutch Elm Disease." This publication can be ordered
       at your local County Extension Office or online at the
       Iowa State University Extension Store:

            “Suburbia is where the developer
          bulldozes out the trees, then names
                        the streets after them.
                                 -Bill Vaughn.”
                                    Iowa Community Tree Steward                                           Page 4 of 6

Autumn Blaze Maple (Acer x freemanii ‘Jeffersred’)
      Jeff Iles- Department of Horticulture, Iowa State University

      In 1969, when Edward Murray officially recognized hybrids between red maple (Acer rubrum) and
      silver maple (Acer saccharinum) as Freeman maples (Acer freemanii), he couldn’t have
      imagined the bright future that lay ahead for this species. But now, almost four decades later,
      Freeman maple selections are commonplace at nurseries and garden centers, and in residential
      and commercial landscapes throughout the upper Midwest. Currently, about ten Freeman maple
      cultivars are grown by plant peddlers in the U.S., but the hands down favorite is 'Jeffersred'
      (marketed under the trademark Autumn Blaze ).
      The late Glenn Jeffers of Fostoria, Ohio selected 'Jeffersred' from a group of seedlings in the late
      1960’s, and to his credit, held off until 1980 before formally introducing his superstar selection to
      the nursery trade. I say “to his credit” because all too often, landscape plants get introduced to
      the gardening public before debilitating weaknesses or flaws in form, adaptability, or some
      aesthetic trait are discovered. It must have been difficult for Mr. Jeffers to exercise this kind of
      patience because he probably knew 'Jeffersred' was going to be a winner.
      Now, twenty-six years after its introduction, 'Jeffersred' Freeman maple is one of the most popular
      shade trees in Iowa (and presumably in much of the Midwest). Why? Well, if you’re a
      homeowner, landscape designer, or city forester, would you be interested in a tree that grows
      fast, has brilliant reddish-orange fall leaf color, relatively few pest problems, and broad
      adaptability to climate and soils? Of course, the answer would be a resounding yes! But if
      everyone is saying yes, should we worry that we’re planting 'Jeffersred' on too grand a scale? In
      other words, are we setting ourselves up for another American elm-like disaster?
      The good news is, unlike American elm, 'Jeffersred' has yet to reveal a comparable Achilles heel?
      Yes, some trees will develop included bark where branch and main stem meet, and if not
      corrected, these branches may break out of the tree if they experience heavy ice and/or snow
      loads. And yes, if you plant 'Jeffersred' on a hot, dry site, remove all of its lower branches, and
      fail to provide adequate moisture, you can expect sunscald injury on the southwestern side of the
      trunk. Throw in an occasional maple bladder gall infestation or tar spot infection on the foliage,
      and that’s about it for “significant” biotic pests. So far, that is! My point is, since we don’t know
      which insect pest or disease-causing pathogen will show up on our shores or in our
      neighborhoods next, the time-honored strategy of diversifying our community tree population
      remains the best hedge against any future pest-related calamity.
      Now, I’m sure many of you out there probably are wondering why I insist on calling this tree
      'Jeffersred' instead of 'Autumn Blaze' maple. And I wouldn’t blame you a bit if you were confused
      by a practice that seemingly issues dual or multiple “names” to trees and other landscape plants.
      But in reality, the only true name for this plant is the cultivar name 'Jeffersred'. Autumn Blaze (or
      Autumn Blaze ) is the trademark used to market 'Jeffersred' but it’s not another name and should
      never be used as an alternate or additional cultivar name.
        But let’s not end on such a legalistic note. Instead, join me in offering our thanks to Mr. Jeffers
      for bringing this unique and useful tree to our attention, and ultimately to our yards, parks, and
      streets. Because on a warm, cloudless, brilliantly lit late September or early October afternoon,
      there are few sites more welcoming and reassuring than the unmistakable reddish-orange glow
      from a 'Jeffersred' Freeman maple.
      First published for the Plant of the Month feature on the Bickelhaupt Arboretum web site
                                                                             “My roots are in the depths
                                                                                          of the woods.
                                   Iowa Community Tree Steward                                      Page 5 of 6

Fall 2007 Alliant Energy’s Operation ReLeaf Tree Sales
       September 8, 2007                   September 22, 2007                  October 6, 2007
       Host: Dubuque County                Host: Linn County                   Host: Winnebago County
       Conservation                        Conservation                        Conservation
       Site: Heritage Trail Head           Site: Squaw Creek Park              Site: Winnebago County
       Community: Dyersville               Community: Marion                   Fairgrounds
                                                                               Community: Thompson
       September 8, 2007                   September 29, 2007
       Host: Lucas County                  Host: Greene County                 October 6, 2007
       Conservation                        Extension                           Host: Hamilton Co.
       Site: Pin Oak Lodge                 Site: Greene County                 Conservation
       Community: Chariton                 Fairgrounds                         Site: Little Wall Lake Park
                                           Community: Jefferson                Community: Jewell (just
       September 15, 2007                                                      outside of Ellsworth)
       Host: Jasper County
       Conservation                                                            October 13, 2007
       Site: Izaak Walton League                                               Host: Geode RC&D, Inc.
       Community: Newton                                                       Site: Marr County Park
                                                                               Community: Washington

       All trees are $25.00 each and are sold on a first come first serve basis.

   Volunteer Request
       Amy Oliver with the Iowa DNR is requesting volunteers to help distribute the Operation ReLeaf
       trees. Assistance is needed from 8:00 am to 11:30 am at the dates and times listed above. All
       volunteers receive a free T-shirt and your time spent volunteering does count toward your Tree
       Steward Volunteer hours. Amy can be contacted at 515-281-6749 or
       if you are able to help out.
       Volunteers are needed for MidAmerican Energy’s Plant Some Shade Program. More information
       on dates and locations can be found at or

                                   Tree Identification Quiz Answer:

       “Each generation takes the       Katsuratree (Cercidiphyllum japonicum)
      earth as trustees. We ought       Leaf: Opposite to subopposite simple bluish green leaves, 2 to 4”
        to bequeath to posterity as     long. They resemble redbud, but redbuds have alternate leaves.
       many forests and orchards        Fruit: Small to ” long pods (only on the females). Twig: Slender,
       as we have exhausted and         swollen at nodes, brownish with spur-like growths that bear the male
                                        or female flowers. Bark: Brown, slightly shaggy on older trunks, and
                        Consumed.       otherwise somewhat similar to a young shagbark hickory’s bark.
              -J. Sterling Morton.”     Form: A small tree up to 40 to 60 feet tall that develops a round
                                        crown of fine branches that spread out 20 to 30 feet. Hardiness
                                        Zone: 4 to 8. Site: Full sun, Eastern exposure, and moist well
                                        drained soils. A moderately fast growing tree.
                                     Useful Phone Numbers and Websites
           ISU, Forestry            Forestry Extension is here to answer your questions and offers a variety of “refresher”
                                    and new courses. Contact Tivon Feeley 515-294-6739 for assistance and check us
        Extension Contact           out on the web
           Information              The Iowa State University Plant Disease Clinic has been assisting Iowan’s for nearly
                                    50 years and is available to answer plant disease questions. From flowers to trees
                                    Christine Engelbrect is ready to help. Contact her at 515-294-0581 or check them out
       Department of Natural        on the web
       Resource Ecology and         For the creepy and crawling things on your plants, don’t forget to contact Iowa State
          Management,               University Extension Entomology. They can help you identify the insect and discover
          339 Science II            the best control measures. Contact them 515-294-1101 or on the web at
        Ames, Iowa 50011  
                                    Be sure to look at the updated Iowa DNR Forestry website at

           515-294-2995              Next Year’s Program…
                                  The 2008 Iowa Community Tree Steward program will be hosted in the following areas:
              E-MAIL:             Cerro Gordo and Grundy County.
                                  More information will be posted in January 2008 on the Forestry Extension web site.

                                 The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and
                                 activities on the basis of race, color, national origin, gender, religion, age, disability,
                                 political beliefs, sexual orientation, and marital or family status. (Not all prohibited bases
                                 apply to all programs.) Many materials can be made available in alternative formats for
       We’re on the Web!         ADA clients. To file a complaint of discrimination, write USDA, Office of Civil Rights, Room
             See us at:          326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-    9410 or call 202-720-5964. Issued in furtherance of Cooperative Extension work, Acts of
                                 May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Jack M.
                                 Payne, director, Cooperative Extension Service, Iowa State University of Science and
                                 Technology, Ames, Iowa.

Department of Natural Resource Ecology and Management
339 Science II
Ames, Iowa 50011


                                                     COMPANY NAME
                                                     STREET ADDRESS
                                                     CITY, STATE 00000

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