Production
How to Keep Plants In Shape by Using PGRs in Your Greenhouse Operation
Plant growth regulators (PGRs) differ by their active ingredients, application methods and rates, and more, which means achieving the desired outcome can be complicated. Understanding how to select and use a PGR effectively in your... more »
Culture Report: Endless Summer ‘Pop Star’ Hydrangea
When it comes to adding new varieties to the Endless Summer lineup, the bar has been set very high. At the very basic level, an Endless Summer hydrangea must be cold hardy to Zone 4,... more »
Technically Speaking: Air, Leaf and Root-Zone Temperature
Temperature is the primary factor that influences the rate of cell division, which is the driving force for plant development. The rate of development typically increases linearly as temperature increases from a crop’s base temperature... more »
New Model for Horticulture Extension Training Launches
Growers and technical staff in the greenhouse and controlled environment industry can gain a new qualification in plant health management with a collaboration from two online Extension training programs offered by the University of Florida... more »
Technically Speaking: Evaporative Cooling, Part 2: Maintenance
As discussed in the April 2022 issue of GPN magazine, there are two major types of evaporative cooling used in greenhouses: fan-and-pad or fog systems. The process of evaporation absorbs energy from the air, which... more »
Culture Report: Streptocarpus Ladyslippers
A class houseplant selection that has undergone a reinvention is the streptocarpus. First documented for commercial use in England in 1818 by the Kew Gardens plant collector James Bowie and native to South Africa, streptocarpus... more »
Blooming by Lamplight
Many greenhouse crops flower in response to day length and will only flower, or flower faster, when the proper photoperiod is provided. Photoperiodic crops are categorized as short-day plants (SDPs) or long-day plants (LDPs), where... more »
Leadership on LED Grow Lights
The benefits of using supplemental light for the propagation and production of greenhouse ornamental, vegetable and cannabis crops have been well documented by university researchers and commercial growers. Much of the research with ornamental crops... more »
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