• Increasing poinsettia size

    Published on October 18, 2007
    Are your potted poinsettias vertically challenged? When applied on young stems before the first hint of color, chemicals can help promote stem extension and take your plants to new heights.

  • Choosing growth regulators doesn't need to be a chore

    Published on October 18, 2007
    More growth regulators with the same active ingredient are available. Read these five considerations to help choose which one will best meet your needs.

  • Graphical tracking

    Published on July 18, 2007
    Graphical tracking, a decision-support tool, can help growers monitor plant height throughout production and identify when plants are too tall or too short.

  • PGR drench guidelines

    Published on April 18, 2007
    A drench of a plant growth regulator (PGR) is an application of a relatively large volume of solution at a low concentration to the growing media. Learn more about which chemicals are appropriate for drenches, as well as suggested volumes and rates.

  • Know your application techniques

    Published on August 18, 2006
    Be sure to select the proper plant growth regulator application technique to achieve your desired crop size.

  • Non-chemical height control strategies for greenhouse crops: part II

    Published on April 28, 2006
    In this issue, we focus on a few cultural strategies that can be used to control plant height.

  • Non-chemical height control strategies for greenhouse crops

    Published on April 14, 2006
    Covering the advantages and disadvantages of plant growth retardants (PGRs).

  • Fascination on poinsettia

    Published on September 12, 2005
    Did you hit your poinsettias with too much growth retardant? This Michigan State University research shows how to recover using products that contain gibberellic acid.

  • Sumagic on bedding plants

    Published on April 18, 2005
    Usage of this highly active plant growth regulator (active ingredient: uniconazole) on bedding plants is for the experienced commercial grower. Read how to use it, when it’s best used, and how much is recommended based on this MSU research.

  • Managing perennial stock plants with Florel

    Published on August 18, 2004
    Michigan State research determines whether Florel (active ingredient: ethephon) can be used as a tool to keep perennial stock plants vegetative and increase the number of cuttings harvested for six species of herbaceous perennials.

  • Florel on summer production of pansy

    Published on April 18, 2004
    We performed experiments to determine if ethephon (e.g., Florel) could be used to delay flowering of pansy and viola when grown under bright, warm and long-day conditions.

  • PGR rates and timing for plug production

    Published on November 18, 2003
    Application rates and timing of the plant growth regulator Bonzi (active ingredient: paclobutrazol) was put to the test in this Michigan State University research on seedling plugs of bedding plants.