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June 09, 2014
Due to the rise in farmers markets and consumer demand for fresh, high-quality and readily available agricultural products that are locally and sustainably produced, domestic production of specialty cut flowers continues to increase across the...
June 09, 2014
They say trends start on the coast and work their way inward. If that’s true, we have several noteworthy trends from this year’s California Spring Trials that are sure to end up in one of your greenhouses … it’s only a matter of time.  Unlike...
June 09, 2014
ARC:  Resistance management is becoming more important daily as our fungicides are more targeted than they used to be. It is easy to tell a grower to rotate to help keep resistance from developing. I find growers sometimes prefer to tank mix...
June 09, 2014
It’s kind of hard to believe but the World Wide Web is almost 25 years old already. I’m sure when Tim Berners-Lee wrote his original proposal for a computer database and software project back in 1989, he had no idea what that proposal would evolve...
May 07, 2014
Demand for some cold-tolerant floriculture crops continues well into spring, which can make production of high-quality plants difficult when the weather gets warm. Cold-tolerant crops, also sometimes called cool-season crops, have a low base...
May 07, 2014
The pansy Grandio series is the newest addition to a well-established and highly beneficial pansy breeding program from Sakata Ornamentals. Known for the extra-large flowered series Majestic Giants, Sakata’s large-flowered Grandio series features...
May 07, 2014
If you have been looking for an easy-to-grow, colorful and not-found-everywhere perennial, look no further. Let me introduce you to the Tye Dye series of Phygelius. This series features four colorful cultivars: ‘Magic Mandarin’ (peachy, orange-...
May 07, 2014
In part one of this postproduction series, we explored the potential detrimental effects of ethylene exposure on bedding plants. In this part we will take an in-depth look at the effects of ethylene on 20 bedding plant species and the benefits of...
May 07, 2014
With so many choices, picking the crops that are sure to make your production lineup shine can be a challenging feat. GPN has assembled a snapshot of this year’s winning varieties to help you choose what makes the most sense for you to grow. These...
May 07, 2014
The Class of 2014 of GPN’s 40 Under 40 embody the future of the horticulture industry. Over the next 15 pages (and on the 40 Under 40 page on www.gpnmag.com) , you will have an opportunity to learn more about the men and women who hold the keys to...
May 07, 2014
MLD:  I’ve been thinking about parasites and saprophytes, the yin and yang of microbes in the greenhouse. All fungi sound scary to growers, but it is important for them to understand the difference. I like to define a parasite as an organism...
May 07, 2014
 Thanks to technology the old fashioned fold-up-and-stick-it-in-the-glovebox road map is rapidly becoming a thing of the past. Nowadays, most of us rely on a plug-it-in-the-cigarette-lighter global positioning system (GPS) system to help us...
April 03, 2014
Chlormequat chloride, the first plant growth retardant (PGR), was discovered in the late 1950s by Dr. N.E. Tolbert, a chemistry professor at Michigan State University. The first experiments were performed and published on wheat, in which...
April 03, 2014
Who says euphorbias have to be just for Christmas? Growers all over the world have been successful in promoting Suntory’s Princettia varieties outside the Christmas holiday season. Available in four gorgeous shades of pink and Max White, Princettia...
April 03, 2014
Many growers and landscapers successfully produce and utilize a number of mainstream warm season ornamental grasses such as Miscanthus and Panicum. There are several additional warm season grass species that have great characteristics and potential...
April 03, 2014
Ethylene (C2H4) is a colorless gaseous plant hormone with a sweet ether-like odor. It is active at very low concentrations in plants; the presence or absence of which will exhibit positive or negative effects on plant growth depending on the stage...
April 03, 2014
Last month, I discussed tips for vinca plug production. However, transplanting a healthy plug is just the first step in producing high-quality flowering vinca, as there are always challenges with nutrition deficiency, disease and insect management...
April 03, 2014
What are you doing to keep pests out of your greenhouses? Kansas State University professor and extension entomologist Raymond Cloyd says sanitation is the first line of defense in plant production and pest management. “Pest management and plant...
April 03, 2014
The infamous Gordon Gekko, played by Michael Douglas in the 1987 movie “Wall Street,” said, “The most valuable commodity I know of is information.” Understanding that while commercial plant production and financial investments are different...
April 03, 2014
MLD: Petunias are in the news again, with Tobacco mosaic virus causing them to be stunted and to show dieback, yellow veins, leaf strapping and mosaic. The cases I’ve seen have been ugly. This is a harsh reminder that petunias aren’t your granddad’s...