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Floriculture & Greenhouse Crop Production

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  • Purpling of leaves

    Published on January 8, 2021
    There are many specialty crops that naturally have red, purple or almost black foliage, while others turn those colors when conditions are unfavorable. This article briefly reviews the factors that influence the purpling of leaves.

  • How to produce poor-quality floriculture crops

    Published on September 11, 2020
    Sometimes growers unknowingly follow practices that can contribute to, or directly cause, a reduction in crop quality. While there can be some tradeoffs between crop quality and crop timing and/or input costs, these practices should be avoided.

  • A little far-red light goes a long way

    Published on May 3, 2019
    Part 4 of a 5-part series presents information on how a relatively low intensity of far-red light influences seedlings grown in fully controlled, indoor environments.

  • LEDs: Blue & far-red light

    Published on April 10, 2019
    Part 3 of a 5-part series summarizes results from an indoor lighting experiment with floriculture crop seedlings, where we determined whether blue light could nullify the effects of far red on stem elongation, without inhibiting flowering.

  • Using Data Loggers in the Greenhouse

    Published on April 6, 2018
    Most growers do not have extensive environmental control systems that keep historical records of the greenhouse conditions. In these cases, you will find that using a data logger will allow you to easily see past and present environmental data.

  • Causes of flower bud abortion

    Published on March 14, 2018
    There are many potential causes to flower bud abortion, including pests, environmental factors, and cultural factors.

  • Keeping in Front of the Curve: pH and EC Monitoring

    Published on January 12, 2018
    In-house monitoring of the growing substrate pH and EC will help to avoid nutrient disorders and shrinkage. Setting up a monitoring system is easy and the steps are highlighted in this article.

  • Producing High Quality Plugs Part I

    Published on September 4, 2017
    In this article, we will discuss how continuous 16-hour or instantaneous threshold supplemental lighting from HPS lamps and LEDs and photoperiodic lighting influence plug quality and subsequent flowering.

  • Bedding plants with high base temperatures

    Published on December 14, 2016
    In the late winter and spring, many greenhouse growers produce a wide variety of species and cultivars, many of which are annual bedding plants. Crops can have different growing and flowering requirements, so plants shouldn’t all be grown the same way.

  • High tunnel and outdoor production of bedding plants

    Published on November 17, 2016
    As greenhouse space becomes limited in the spring, you may consider using outdoor spaces and high tunnels. Read on for insight into the benefits and risks associated with these growing strategies.

  • High tunnel and outdoor production of cold-tolerant bedding plants

    Published on November 10, 2016
    As greenhouse space becomes limited in the spring, you may consider using outdoor spaces and high tunnels. Read on for insight into the benefits and risks associated with these growing strategies.

  • Crops with relatively low optimum temperatures

    Published on May 17, 2015
    At temperatures above the optimum, plants experience stress and the rate of development begins to decrease. Learn which crops grow best at relatively cool temperatures.

  • Growing your crops above their base temperature

    Published on November 17, 2014
    Is lowering temperature set points in the greenhouse the best option for you to combat rising heating costs?

  • Cold-intermediate bedding plants

    Published on February 22, 2014
    Bedding plants that stop developing at moderately low temperatures can be labeled as cold-intermediate plants. This categorization is based on estimates of base temperatures derived from research data primarily generated at Michigan State University.

  • Cold-tolerant bedding plants

    Published on January 22, 2014
    Bedding plants that stop developing at low temperatures can be labeled as cold-tolerant plants. This categorization is based on estimates of base temperatures derived from research data primarily generated at Michigan State University.

  • Cold-sensitive bedding plants

    Published on December 22, 2013
    Bedding plants that stop developing at a relatively high temperature can be labeled as cold-sensitive plants. This categorization is based on estimates of base temperatures derived from research data primarily generated at Michigan State University.

  • Flowering of petunia at low temperatures

    Published on November 22, 2013
    Temperature and photoperiod interact to influence flowering of petunia. This article presents research-based information to better understand how to manipulate the environment for rapid flowering.

  • Wave petunia smart scheduling

    Published on March 22, 2013
    We quantified the effects of temperature and photosynthetic daily light integral on flowering time and characteristics of 15 Wave petunia cultivars, then generated temperature-based flowering time models for more predictable greenhouse scheduling.

  • Manipulating day and night temperatures to control flowering and heating costs

    Published on February 22, 2013
    The difference between the day and night temperature influences plant height of many floriculture crops, as well as greenhouse energy consumption for heating.

  • The latest on plug production: Seedling plug size effects on flowering time

    Published on September 22, 2012
    We evaluated the effect of two plug sizes on finish crop time, plant quality characteristics, and estimated production costs for five bedding plant species.