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June 20, 2011
Ever since the Perennial Plant Association selected Perovskia atriplicifolia as the 1995 Perennial Plant of the Year, Russian sage has become a staple item in perennial programs and landscapes across the country. This long-lived perennial has silver...
June 20, 2011
You’ve got questions, and the experts at the National Greenhouse Manufacturers Association have the answers. Here are some frequently asked questions related to heating systems and heat loss for greenhouse structures. How does heat loss occur? Heat...
June 20, 2011
Achimenes, commonly known as the Orchid Pansy, Hot Water Plant or Star of India, is one of the “top 10 underused floriculture crops.” We recently conducted research on achimenes and agree they are not used enough in the industry. They are a ‘diamond...
June 20, 2011
In the Horticultural Substrates Lab at North Carolina State University, Brian Jackson and I are striving to improve the efficiency of substrates for greenhouse production. Our objectives are four fold. To explore the use of wood as an organic...
June 20, 2011
Each spring, the GPN crew heads west to California for a week-long journey visiting breeders and industry suppliers. It’s always quite an adventure, and this year was no different. Starting in Encinitas and ending in Gilroy, we made a total of 18...
June 20, 2011
In this issue, we present a summary of diseases that occur in calibrachoa. Remember: Product controls are based on research trials and do not reflect an endorsement of any sort. To learn more about diseases affecting calibrachoa, click on the PDF...
June 20, 2011
For the past couple of months I have been looking all over the place and I can’t seem to find it anywhere. There was even talk that we might need to put out a Missing Persons Report, because nobody could find it ­— I’m talking about Spring 2011. No...
May 19, 2011
Unlike people, animals and insects, plants are not able to get up and move. They are stuck in the container, or in the landscape, where they are planted. However, plants are able to adapt their growth to try to position stems and leaves so that they...
May 19, 2011
Pentas, which are native to northeast Africa, are well known to thrive in very hot and dry conditions. Did you know that they are also very tolerant of salt exposure and high humidity? Due to recent advancements in breeding, there are even pentas...
May 19, 2011
Valued for its golden variegation, erect upright form and tidy clumps, this feather reed grass is easy to grow and boasts strong landscape performance. Ornamental grasses continue their popularity as reliable, long-lived landscape perennials. Prior...
May 19, 2011
As the need for recycled water increases, new technologies must be explored. To grow healthy plants, there are a number of key ingredients that are required: plant materials, substrate to grow the plants in, sunlight, nutrients and water. Water is...
May 19, 2011
Proper propagation techniques can be critical to your poinsettia crop’s success. New research from Clemson University looks at a new rooting medium that growers may want to consider this poinsettia season. Researchers have developed a new rooting...
May 19, 2011
In early 2009, East Jordan Plastics purchased a facility in South Haven, Mich., and dedicated it to recycling used and obsolete horticultural containers and tags. Their proprietary process allows for used containers to be turned into clean regrind...
May 19, 2011
Find out why breeders are working hard to introduce new and exciting eucomis varieties to the market. Eucomis, commonly known as pineapple lily, is an easy-to-produce perennial, native to South Africa. The flower spikes are a dense column of waxy,...
May 19, 2011
Growing extraordinary plants is critical to your business and reputation. As you know, the success of your plants greatly depends on various factors: climatic conditions, use of plant growth regulators, vulnerability to pests and/or diseases, and so...
May 19, 2011
In this issue, we present a summary of diseases that occur in osteospermum.Remember: Product controls are based on research trials and do not reflect an endorsement of any sort. To learn more about diseases affecting osteospermum, click on the PDF...
May 19, 2011
Once again, Team GPN survived California Spring Trials. Jasmina Radjevic, Bob Bellew, Kim Sammartino, Amanda McAdam and I spent seven days traveling to all of the breeder locations during the last week of March to see what new varieties and...
April 13, 2011
Uniconazole is the active ingredient in the plant growth retardants (PGR) Sumagic (Valent Professional Products) and Concise (Fine Americas). On a part per million (ppm) basis, uniconazole is the most active and persistent PGR used for height...
April 13, 2011
A revolutionary breeding breakthrough, these vegetative large-flowered trailing pansies are great for premium early-season hanging basket production. The Balconita pansy series was bred by David Kerley and is offered by Oro Farms. The series consist...
April 13, 2011
Very few perennials can compete with the impressive displays of color that hardy hibiscus cultivars provide when in full bloom. Walters Gardens, Inc. has been working diligently with their breeding program over the past several years to select...