Moderate performers Homestead, Pioneer, and New Harmony

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1 National Elm Trial in Iowa Established: 2005 Located in a the Iowa State University, Horticulture Research Station, Ames, Iowa Visitors are welcome during business hours. 17 varieties of Elm trees are in the trial Good Performers (based on survival, arrangement and angles of branches, overall growth and appearance): Glossy Triumph, Stalwart Commendation, Plainsman Vanguard, Patriot, Accolade Moderate performers Homestead, Pioneer, and New Harmony Not recommended Emerald Sunshine, Frontier, Princeton, Prairie Expedition Prospector Red Tip Danada Charm, Valley Forge, New Horizon

2 Dr. Mark L. Gleason Professor and extension plant pathologist Department of Plant Pathology and Microbiology 351 Bessey Hall Iowa State University Ames, Iowa, Office Phone: Cell Phone: National Elm Trial Iowa Contacts

3 Iowa Planting Cultivar Number Cultivar Name Parentage Supplier Site Cultivar List 1 Red Tip Danada Charm Glossy 2 Triumph 3 Homestead Patriot 8 Frontier Emerald Sunshine' or 'JFS Bieberich' (Originally 'Clone D') Stalwart Commendation Plainsman Vanguard U. japonica X U. wilsoniana J. Frank Schmidt & Son Co U. pumila X U. japonica X U. wilsoniana U. glabra X U. carpinifolia X U. pumila (U. glabra X U. carpinifolia X U. pumila) X U. wilsoniana J. Frank Schmidt & Son Co J. Frank Schmidt & Son Co J. Frank Schmidt & Son Co U. propinqua J. Frank Schmidt & Son Co U. carpinifolia X U. pumila X U. wilsoniana J. Frank Schmidt & Son Co U. pumila X U. japonica J. Frank Schmidt & Son Co U. carpinifolia X U. parvifolia J. Frank Schmidt & Son Co 9 Pioneer U. glabra X U. carpinifolia J. Frank Schmidt & Son Co 10 New Horizon U. pumila X U. japonica J. Frank Schmidt & Son Co 11 Accolade U. japonica X U. wilsoniana J. Frank Schmidt & Son Co 12 Prospector U. wilsoniana J. Frank Schmidt & Son Co 13 Valley Forge U. americana J. Frank Schmidt & Son Co 14 New Harmony U. americana Princeton Nurseries 15 Princeton' U. americana Princeton Nurseries 16 Lewis & Clark Prairie Expedition U. americana Lee Nursery, Inc.

4 Iowa Planting Site Map Directions to the Horticulture Research Station th Street Ames, Iowa From I-35 County Hwy-E29 exit 116 Turn left onto County Hwy- E29 / 190th St. Turn right onto N Dayton Ave. Turn left onto 180th St. Turn left stay on 180th St. Take the 1st right onto 550th Ave Take the 2nd right onto 170th St / County Hwy- E23. Row <<<<< Column >>>>> Pioneer Stalwart Commendation New Harmony Accolade 5 Patriot Prospector 6 7 Lewis & Clark Prairie Expedition New Harmony Lewis & Clark Prairie Expedition Plainsman Vanguard Glossy Triumph 8 Pioneer Prospector Princeton Frontier 9 10 Glossy Triumph Stalwart Commendation Glossy Triumph New Harmony Plainsman Vanguard Accolade Frontier New Harmony Prospector Pioneer Stalwart Commendation Cedar Princeton Oak Emeral Sunshine Pioneer Plainsman Vanguard Buckeye Homestead Patriot Prospector Stalwart Commendation Accolade Glossy Triumph 11 Oak Homestead Princeton Frontier New Harmony Accolade Patriot Plainsman Vanguard Homestead Road Stalwart Commendation North Prospector Homestea d Frontier Accolade Princeton Patriot Glossy Triumph Emerald Sunshine Plainsman Vanguard

5 Bell tower Iowa State Main Campus National Elm Trial in Iowa

6 Images from Fall 2014

7 Data on following pages are from 2014 by Mark Gleason with survivorship data modified from June 2015 data Images are from Jacobi June 2015

8 Iowa Diameter Growth/Year

9 Iowa Height Growth/Year

10 Iowa Crown Width Growth/Year

11 Iowa Cultivar Ratings

12 Emerald Sunshine (Ulmus propinqua) Princeton (Ulmus americana) Survival: 40% Diameter at 1.4m (cm): 15.5 Height (m): 8.7 Crown shape: Vase Crown width (m): 3.9 Insects: None *Not Recommended for Central Iowa Survival: 80% Diameter at 1.4m (cm): 28.7 Height (m): 11.4 Crown shape: Vase Crown width (m): 8.4 Insects: None *Not Recommended for Central Iowa

13 Frontier (Ulmus carpinifolia X U. parvifolia) Homestead (U. glabra X U. carpinifolia X U. pumila) Survival: 40% Diameter at 1.4m (cm): 20.6 Height (m): 9.0 Crown shape: Cone Crown width (m): 6.2 Insects: None *Not Recommended for Central Iowa Survival: 80% Diameter at 1.4m (cm): 26.1 Height (m): 11.1 Crown shape: Columnar Crown width (m): 7.2 Insects: Minor defoliation

14 Glossy Triumph TM (U. pumila X U. japonica X U. wilsoniana) Plainsman Vanguard TM (U. pumila X U. japonica) Survival: 100% Diameter at 1.4m (cm): 32.3 Height (m): 12.1 Crown shape: Vase Crown width (m): 8.6 Insects: None *Highly Recommended Survival: 100% Diameter at 1.4m (cm): 32.2 Height (m): 11.7 Crown shape: Vase Crown width (m): 9.2 Insects: Minor Defoliation *Highly Recommended

15 Red Tip Danada Charm TM (U. japonica X U. wilsoniana) Stalwart Commendation TM (U. carpinifolia X U. pumila X U. wilsoniana) No Picture Available Survival: 0% Diameter at 1.4m (cm): N/A Height (m): N/A Crown shape: N/A Crown width (m): N/A Disease: N/A Insects: N/A *Not recommended for Central Iowa Survival: 100% Diameter at 1.4m (cm): 35.5 Height (m): 11.3 Crown shape: Vase Crown width (m): 9.4 Insects: None *Highly Recommended

16 Accolade (U. japonica X U. wilsoniana) New Horizon (U. pumila X U. japonica) No Picture Available none survived Survival: 100% Diameter at 1.4m (cm): 29.7 Height (m): 10.7 Crown shape: Vase Crown width (m): 9.4 Insects: None *Recommended for Central Iowa Survival: 0% Diameter at 1.4m (cm): N/A Height (m): N/A Crown shape: N/A Crown width (m): N/A Disease: N/A Insects: N/A *Not recommended for Central Iowa

17 Patriot (U. glabra X U. carpinifolia X U. pumila) X U. wilsoniana Pioneer (U. glabra X U. carpinifolia) Survival: 80% Diameter at 1.4m (cm): 29.0 Height (m): 12.5 Crown shape: Pyramid Crown width (m): 8.8 Insects: None- sparse foliage weather related? Survival: 80% Diameter at 1.4m (cm): 30.0 Height (m): 10.5 Crown shape: Vase Crown width (m): 9.0 Insects: Japanese Beetles

18 Prospector (U. wilsoniana) Valley Forge (U. americana) No Picture Available no survivors Survival: 0% Diameter at 1.4m (cm): 26.2 Height (m): 10.3 Crown shape: Round Crown width (m): 6.9 Disease: weather mortality winter Insects: None *Not recommended for Central Iowa Survival: 0% Diameter at 1.4m (cm): N/A Height (m): N/A Crown shape: N/A Crown width (m): N/A Disease: N/A Insects: N/A *Not recommended for Central Iowa

19 New Harmony (U. americana) Lewis and Clark Prairie Expedition (U.americana) Survival: 80% Diameter at 1.4m (cm): 17.0 Height (m): 10.8 Crown shape: Columnar Crown width (m): 5.7 Disease: Wetwood Insects: None Survival: 40% Diameter at 1.4m (cm): 16.5 Height (m): 7.2 Crown shape: Vase Crown width (m): 8.5 Insects: None *Not recommended for Central Iowa

20 Damages

21 References Batzer, J. and M. L. Gleason National Elm Trial for Iowa.. Iowa State University, Annual Fruit/Vegetable Progress report. 3pp. Batzer, J, and M. L. Gleason, Final year of decade long National Elm Trial for Iowa. Iowa State University, Annual Fruit/Vegetable Progress Report 3 pp.