University of Minnesota Extension

FO-06594     1997

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Roses for the North: Performance of Shrub and Old Garden Roses at the Minnesota Landscape Arboretum
Cover: Rosa 'Applejack' Shrub Rose.


Kathy Zuzek, Marcia Richards, Steve McNamara, and Harold Pellett


Copyright ©  2012  Regents of the University of Minnesota. All rights reserved.



Contents


  1. Introduction

    2. Classes and Characteristics
    Performance and Evaluations

  2. Floral Traits

    3. Flower Form
    Colors and Color Patterns
    Flower Fragrance
    Comparison of Floral Traits

  3. Bloom Pattern

  4. Cold Hardiness

    5. What Cold Hardiness Is
    Observations of Injury
    Definitions and Descriptions of Winter Injury
    Effects of Snowcover
    Winter Injury During Acclimation
    Air Temperatures and Snowcover at the Minnesota Landscape Arboretum
    Quantifying Winter Hardiness in the Laboratory
    Hardiness Determinations in Containers
    Winter Hardiness Comparisons of Field and Container-Grown Roses
    Hardiest Selections

  5. Plant Size and Habit

    6. Winter's Effect on Size and Habit
    Descriptors for Growth Habits of Rose Cultivars
    Plant Width

  6. Diseases

    7. Blackspot
    Powdery Mildew
    Leaf Spots
    Rust
    Observing the Diseases
    Patterns and Trends

  7. Insects

    8. Aphids
    Mites
    Rose Stem Borer
    Mossy Rose Gall
    Insect Observations

  8. Cultivation Tips

    9. Site Selection
    Purchasing Plants
    Planting
    Hardiness Zones
    Water, Mulch, and Fertilizer
    Deadheading
    Pruning and Winter Protection
    Pest Control

  • Appendix A: Maximum and minimum air temperatures and precipitation
  • Appendix B: Minnesota Extension Service Rose Diseases reprint
  • Appendix C: Shrub and Old-fashioned Roses Arboretum Review reprint

Authors: Kathy Zuzek and Steve McNamara are horticultural scientists at the University of Minnesota Horticultural Research Center. Marcia Richards is a volunteer research assistant at the Center. Harold Pellett is a professor of horticultural science at the Minnesota Landscape Arboretum. The Arboretum and the Research Center are both located in Chanhassen, Minnesota.

Acknowledgements: The authors wish to gratefully acknowledge Deborah Brown, Sam Brungardt, Bob Mugaas, and Don Selinger for their comments on this manuscript. The authors also wish to acknowledge the staff and volunteers of the Minnesota Landscape Arboretum who helped maintain and evaluate the roses for this study.

Photo editing was by Dave Hansen of Communication and Educational Technology Services. Photography was by Dave Hansen, Kathy Zuzek, Marcia Richards, Steve McNamara and Jody Fetzer. Publication design was by Larry Etkin and John Molstad of Communication and Educational Technology Services. Illustrations and artwork were by John Molstad and Jeff Davel. Publication manuscript editing and product management for the Minnesota Agricultural Experiment Station was by Larry Etkin.

Production of this publication was supported with funds from the Minnesota Agricultural Experiment Station.

'Harison's Yellow'

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Produced by Communication and Educational Technology Services, University of Minnesota Extension.

In accordance with the Americans with Disabilities Act, this material is available in alternative formats upon request. Please contact your University of Minnesota Extension office or the Extension Store at (800) 876-8636.


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