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METRIA 7: Trees for the Nineties:
Landscape Tree Selection, Testing, Evaluation, and Introduction

Proceedings of the Seventh Conference of the Metropolitan Tree Improvement Alliance

The Morton Arboretum
Lisle, Illinois

June 11-12, 1990

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Introduction

The seventh METRIA Conference was held June 11- 12, 1990 at the Morton Arboretum, Lisle, Illinois. The conference theme and title: Trees for the Nineties: Landscape Tree Selection, Testing, Evaluation, and Introduction. The twelve speakers covered all of the aspects noted in the program title. A special portion of the program dealt with tree testing projects in the Midwest, including speakers from Kansas, Nebraska, Minnesota, Iowa, Wisconsin, and Illinois. This emphasis on the Midwest was part of the rationale for having a METRIA conference “so far west”.

The meeting was memorable for two unexpected “ephemeral” events. The field walks were greeted by swarms of seventeen-year cicadas at the peak of their emergence, stirred up by unusually strong breezes. Later in the day, Frank Santamour’s talk was interrupted by a power failure. A portable generator enabled the next speaker, Keith Warren, to proceed with his slide presentation until power was restored. Quick action in summoning help by the power company’s chief utility arborist (attending the conference) brought restoration of power. The problem: a tree limb broken by the persistent winds, had fallen on a line near the Conference
Center.

Sponsorship was shared by the Illinois Arborist Association and the Morton Arboretum’s Urban Vegetation Laboratory. Major effort was shared by Tom Perry, Executive Director of METRIA, and Gary Watson, Morton Arboretum, who was in charge of assembling and printing the program and for arrangements for food and facilities. George Ware and Thomas Green assisted.

METRIA officers thank all of the speakers for a timely, interesting, and successful program.

Acknowlegement

The officers and members of METRIA gratefully acknowledge the support of the U.S. Forest Service, Northeastern area, for providing the funds for publishing these proceedings. The METRIA conference could not have been a success without the financial support of the Morton Arboretum and the efforts of many staff members. Jan Watson generously donated time to prepare the camera-ready copy of these proceedings.

Contents

• Introduction
• Chicagoland Grows: A Program of Plant Introdcution - Dr. Roy L. Raylor, Chicago Botanic Garden
• Center for Development of Hardy Landscape Plants - Harold Pellett, Center for Development of Hardy Landscape Plants
• Selecting and Testing Street Tree Cultivars - Henry D. Gerhold, Pennsylvania State University
• Selecting and Testing Elms: The Wisconsin Elm Breeding Program - Raymond P. Guries & Eugene B. Smalley, University of Wisconsin - Madison
• KSU Horticulture Research Center Ornamentals Testing Program - John C. Pair, Horticultural Research Center
• The Nebraska Statewide Arboretum and Its Plant Introduction Program - Arthur H. Ode, University of Nebraska
• NC-7 Regional Ornamental Trials: Evaluation of New Woody Plants - Mark P. Widrlechner, Iowa State University
• Height Growth of Trees of the Morton Arboretum's Tree Evaluation Plots - George Ware, The Morton Arboretum
• Trees for Urban Planting: Diversity, Uniformity, and Common Sense - Frank S. Santamour, Jr., USDA, U.S. National Arboretum
• Commercial Production of Deciduous Tree Cultivars - Keith Warren, Frank Schmidt & Son Company
• Street Tree Diversity: Making Better Choices for the Urban Landscape - Nina L. Bassuk, Cornel University
• QUEST - A Search for the Perfect Shade Tree - Willet N. Wandell, Discov-Tree Research and Development

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