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


  • Heidi Lindberg

    West Michigan Greenhouse and Nursery Education & Research
    wollaege@msu.edu
    616-994-4701

  • Rice hulls and PGRs

    Published on November 18, 2010

  • Potential Effect of Water Quality on PGRs

    Published on November 18, 2015

  • Rice hulls and PGRs - en Español

    Published on December 23, 2010

  • Control stem length with liner dips

    Published on November 18, 2011
    Dipping trays of rooted liners and plugs into a PGR solution, or liner dip, is a newer method of efficiently applying root-absorbed PGRs that controls stem elongation after transplanting.

  • 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.

  • A new paclobutrazol (Piccolo 10XC)

    Published on September 18, 2011
    Fine Americas released a new, more concentrated formulation of paclobutrazol called Piccolo10XC. Plant responses were similar when the same active ingredient, volume, and application rate were used.

  • Using chlormequat chloride with success

    Published on April 18, 2014
    Chlormequat chloride is a plant growth retardant used to promote flowering or inhibit extension growth of floriculture crops grown in greenhouses, shadehouses and container nurseries.

  • Brushing plants for height control

    Published on February 18, 2009
    “Brushing” plants is proving to be a promising, albeit unconventional, height control technique. When touched or moved, plants release ethylene, which can inhibit elongation.

  • PGR application considerations

    Published on May 18, 2013
    This article briefly presents some of the considerations when selecting which plant growth regulator (PGR) rate, method and active ingredient to apply to greenhouse-grown ornamental crops.

  • Fascination on poinsettia

    Published on August 8, 2016
    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.

  • Using a GA to increase plant height

    Published on August 8, 2018
    Regardless of the cause, the most common technique to increase plant height of containerized flowering plants is an application of gibberellic acid by someone certified as a pesticide applicator.

  • Ethephon drenches on bedding plants

    Published on April 18, 2013
    In the second of a two-part series with ethephon (e.g., Florel), we shows that drenches are a viable method to control height and size of several bedding plant crops.

  • 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.

  • Trending: PGR sprenches

    Published on April 17, 2015
    A sprench of a plant growth regulator (PGR) is a hybrid of a spray and a drench application, and is increasingly being used in the production of greenhouse ornamentals.

  • 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.

  • 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.