Herbaceous Perennials
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Asclepias tuberosa - Butterfly weed
Published on April 12, 2017
Several species of milkweed, or asclepias, are native to North America, and this year the Perennial Plant Association has chosen one of them as Perennial Plant of the Year: Asclepias tuberosa.
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Juvenility in perennials
Published on June 29, 2016
Plants started by seed have a juvenile phase and they must develop to a certain maturity before they attain the capacity to flower.
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Controlling flowering of Echinacea
Published on February 8, 2013
Research-based information is presented about how to control the flowering of purple coneflower (Echinacea) for commercial production.
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Long-day perennials
Published on March 12, 2012
One of the major flowering triggers of herbaceous perennials is exposure to long days (short nights). Learn which crops have this response, and tips on how to deliver long-day lighting..
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Grow perennials with your annuals
Published on December 29, 2010
Research at Michigan State University has determined the flowering requirements of more than 600 cultivars and species of herbaceous perennials.
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Production tips for top performers: Hibiscus moschetos
Published on March 1, 2009
Production information, based on research at Michigan State University, is presented on the herbaceous perennial swamp rose mallow (Hibiscus moscheutos).
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Production tips for top performers: Lavandula stoechas
Published on January 29, 2009
Production information, based on research at Michigan State University, is presented on the herbaceous perennial Spanish lavender (Lavandula stoechas).
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Productions tips for top performers: Echinacea 'Sunrise' & 'Harvest Moon'
Published on November 29, 2008
Production information, based on research at Michigan State University, is presented on two yellow-flowering cultivars of the herbaceous perennial coneflower (Echinacea).
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Production tips for top performers: Campanula persicifolia
Published on October 29, 2008
Production information, based on research at Michigan State University, is presented on two cultivars of the herbaceous perennial peach-leaved bellflower (Campanula persicifolia).
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Production tips for top performers: Gaillardia 'Oranges & Lemons'
Published on September 29, 2008
Production information, based on research at Michigan State University, is presented on the herbaceous perennial blanket flower (Gaillardia) 'Oranges and Lemons'.
