Lighting

Bedding Plants with High Base Temperatures

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... more »

Managing Temperature to Balance Crop Quality and Timing

One of the major reasons why we grow floriculture crops in greenhouses is to regulate the environment, especially temperature, to control plant growth and development. We can also manipulate the day length to regulate flowering... more »

High Tunnel and Outdoor Production of Cold-Tolerant Bedding Plants

Annual bedding plant production typically occurs from late winter to spring. As greenhouse space becomes limited in the spring, some growers begin moving and growing plants outdoors. Outdoor and high tunnel production are inexpensive alternatives... more »

LED Lighting Applications for Plants

I first wrote about light-emitting diodes (LEDs) in this column in 2009, and although much of what I wrote then is still true today, some things have substantially changed for the better. In particular, fixtures... more »

Using Vertical Farming to Supply Locally Grown Produce

As a youth, Dan Albert, owner of Farmbox Greens in Seattle, Washington, worked on a farm in upstate New York. But his past growing experience is a far cry from his current vertical farm operation... more »

Managing Light to Improve Rooting of Cuttings

The characteristics of a high-quality liner vary somewhat from crop to crop and intended use, but generally, the goal is to produce cuttings with a well-developed root system in a short period of time. Successful... more »

Red Light and Plant Growth

When you hear the term “red light,” what do you think of? Stopping at a traffic light? A certain district in Amsterdam? Light from LEDs? Red light can convey caution or danger or stopping at... more »

The Impact of DLI, Light Quality and Photoperiod on Bedding Plant Flowering Response

Successful scheduling of annual bedding plants for specific market dates requires an understanding of how plants respond to temperature, light intensity and quality and photoperiod. In this article we will focus on daily light integral... more »

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GPN recognizes 40 industry professionals under the age of 40 who are helping to determine the future of the horticulture industry. These individuals are today’s movers and shakers who are already setting the pace for tomorrow.

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May 2019 GPN
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