View All: Articles

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...
April 03, 2014
Big growers from across the country definitely knew the way to San Jose in February. They traveled to the heart of Silicon Valley to participate in GPN’s seventh annual Big Grower Executive Summit. (See news item on page 8).  Our keynote...
March 19, 2014
Researchers at  Harvard University, the University of California-Berkeley and the United States Treasury recently addressed the question, “Is the United States still a land of opportunity?” in the  National Bureau of Economic Research (...
March 19, 2014
I’m sure you have heard the adage that “a picture is worth a thousand words.” I once heard that a metaphor is worth a thousand pictures.  Over the years, I have found by using metaphors to help illustrate a point, light bulbs go off (a metaphor...
March 19, 2014
What started in 1957 as a produce farm has now become an established greenhouse operation with multiple locations — Dan Schantz Farm & Greenhouses, based in Zionsville, Pa. While the product offering has changed quite a bit, Dan Schantz’s vision...
March 11, 2014
Many popular spring garden plants, such as calibrachoa and petunia, perform best at a low media pH, around 5.4 to 5.8. When the pH becomes too high, above 6.2 for these crops, iron in the root zone becomes less available to these plants. The most...
March 11, 2014
For herb enthusiasts and food aficionados, Ocimum basilicum (sweet basil) is a must-have variety in the garden. Originating in Southeast Asia and native to India, herb basil has been used for regional cuisines and medicinally for more than 5,000...