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Showing results for content tagged 'height management of ornamentals'. Search instead for the keyword 'height management of ornamentals'.

  • Height Management of Ornamentals

    MSU Extension’s floriculture educational and applied research programs help improve greenhouse crop production and business management by providing trusted information on new production techniques and management strategies.


  • Using the PGRs Collate and Florel

    Published on June 18, 2013
    Achieving consistent results with the plant growth regulators (PGRs) Collate or Florel can be trickier than with other PGRs simply because the active ingredient, ethylene, is a gas.

  • 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.

  • Increasing plant height

    Published on October 17, 2014
    There are numerous ways to promote extension growth, including changes to plant culture or the growing environment, or applying a plant growth regulator that includes gibberellic acid.

  • Controlling height with temperature drops

    Published on April 17, 2009
    Temperature drop is the practice of lowering the temperature, typically by 5-15 degrees F, before sunrise. Generally, the greater the magnitude of the temperature drop, the stronger it suppresses plant height.

  • 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.

  • Improving branching and postharvest quality

    Published on August 18, 2008
    When used properly, benzyladenine (BA) sprays have commercial potential, and can increase the number of tertiary shoots in poinsettia and delay lower-leaf yellowing (chlorosis).

  • The ABCs of PGRs

    Published on November 18, 2008
    There are now a large number of plant growth regulators registered for use on ornamental plants. This article discusses the various active ingredients and the product names for each.

  • Height control for vegetable transplants

    Published on February 18, 2010
    A supplemental labeling of Sumagic for use on vegetable transplants in the U.S. has made height control less complicated. There are a few other methods that may be helpful, too.

  • PGR dilution guide

    Published on April 18, 2013
    A critical factor for effective use of plant growth regulators (PGRs) is that the solution is mixed in the appropriate concentration.

  • Early growth regulator drenches on poinsettia

    Published on November 18, 2010
    A technique to inhibit stem extension of poinsettia is to apply an early, low-dose PGR drench. This article will compare the efficacy of low-dose and early drench applications of paclobutrazol on poinsettia crops.

  • Height control of perennials: What works and what doesn’t

    Published on August 17, 2020
    This article discusses height control techniques that generally do or don’t work for herbaceous perennials forced into flower.

  • Plug / liner dip guidelines

    Published on February 18, 2013
    A plug or liner dip is a plant growth retardant (PGR) application technique for ornamentals in which a tray of finished young plants is placed into a shallow PGR solution for a short period of time.

  • A new height control possibility for daffodils and hyacinths

    Published on March 18, 2013
    In this first of a two-part series, we look at ethephon (e.g., Florel) release as affected by substrate pH, and results of drenches on daffodils and hyacinths.

  • Tips on using uniconazole

    Published on April 18, 2011
    This article provides suggestions for how and when to use uniconazole (e.g., Sumagic and Concise) as a spray or drench to obtain desirable, more compact ornamental plants.

  • 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.

  • 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.

  • How to avoid GA carryover

    Published on August 18, 2010
    Gibberellins (GA) can bind to plastic and concrete, and potentially cause excessive growth, especially in sensitive crops.

  • Spray vs. sprench vs. drench

    Published on July 18, 2010
    This article discusses three application methods for plant growth regulators: foliar spray, substrate drench, and sprench, which is a hybrid between a spray and a drench. Here are some guidelines to help you determine which method is most appropriate.

  • Getting results with liner dip

    Published on November 18, 2008
    In this article, we provide four keys to successful use of using plant growth regulators as liner (or plug) dips.

  • Success with PGRs

    Published on March 18, 2019
    Regardless of the desired outcome, successful use of a plant growth regulator (PGR) requires multiple considerations and attention to detail. This article summarizes practices to obtain the best results from your PGR applications.