Chrysanthemum ×hybridum MN 98-89-7 Shrub Garden Chrysanthemum

in HortScience

A new garden chrysanthemum with a shrub plant habit is released as a descendent of a cross involving two hexaploid species: Chrysanthemum weyrichii (Maxim.) Tzvelv. (female) × C. ×grandiflorum Tzvelv. (male). Chrysanthemum ×hybridum Anderson MN 98-89-7 [U.S. Plant Patent (PP) 14,495] is a vigorously growing shrub chrysanthemum for garden culture, exhibiting extreme hybrid vigor. Single daisy reddish-purple flowers cover the foliage in the fall, numbering >3000 on second-year plants. This selection displays excellent winterhardiness in U.S. Department of Agriculture (USDA) Z3b+ (–34.4 to –37.2 °C) as well as frost-tolerant flowers. In its second and subsequent years of growth after planting, MN 98-89-7 grows into a fall flowering (August–October), herbaceous shrub ranging in plant height from 61.0 to 91.4 cm with a diameter of 76.2 to 152.4 cm. Its spherical plant shape is achieved naturally with self-pinching, creating a highly manicured appearance; it also attracts honey bees and butterflies as pollinators. MN 98-89-7 is a vegetative product and this unnamed selection is being released for germplasm purposes as well as for potential licensing and naming.

Contributor Notes

This research has been supported by the Minnesota Agricultural Experiment Station and a grant from the Ball Horticultural Company, West Chicago, IL.


Professor Emeritus.


Senior Scientist (Poppe); Associate Professor/Fruit Specialist, Sustainable Agriculture Science Center, New Mexico State University, Alcalde, NM (Yao); Non/Exempt Temporary or Casual Scientist (Johnson).

Senior Research Fellow.

Professor, University of Tennessee, Knoxville, TN.

Associate Professor.

Emeritus Assistant Superintendent.

Corresponding author. E-mail:

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    Pedigree of Chrysanthemum ×hybridum MN 98-89-7 (Anderson et al., 2004). The female (seed) parents are listed first, followed by the male (pollen) parent.

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    Adaxial (above surface; left) and abaxial (below surface; right) leaf profiles of MN 98-89-7. Bar = 1 cm. Photo: Neil Anderson.

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    Year 1 plant phenotype of MN 98-89-7 displaying the cushion plant habit and close-up of flowers showing the occasionally simplex (single) to duplex daisy flowers with a small “eye” in the center of the disc florets. Bar = 5.0 cm. Photo: Neil Anderson.

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