January 24, 2011
Silicon In Floriculture Fertility Programs: Ready Research Results
Silicon (Si) is not considered an essential plant nutrient because most plant species can complete their lifecycle without it. Still, some plant species can benefit from supplemental silicon in a variety of ways. Reports on dozens of ornamental species, including gerberas, roses, asters, New Guinea impatiens, zinnias, sunflowers, poinsettias and orchids, have begun to illustrate wider potential use for this poorly understood element. Beneficial effects reported include improved salt and drought tolerance during production and post-harvest environments; stronger, thicker stems in some cut flowers; and larger orchid liners. In this report, we highlight some positive responses we have observed with supplemental silicon in several species. Powdery Mildew in Zinnia, Phlox, Cucumber & Sunflower Powdery mildew species have a wide range of hosts, including many economically important to the greenhouse industry (e.g. gerbera, chrysanthemum, rose, verbena). Zinnia, phlox, cucumber and sunflower were supplied with 30 to 60 ppm Si (in the […]
March 23, 2009
Energy-Efficient Annuals: Scheduling Bedding Plants
Examples of software interface panels of Virtual Grower. This program can be downloaded free at VirtualGrower.net and can be used to estimate greenhouse energy costs throughout the United States. Desirable scheduling of garden plants includes producing a marketable crop for a specific date with the least amount of inputs as possible. A large contribution to input costs for greenhouse production are overhead expenses (often calculated on a cents-per-square-foot basis). During winter and early spring production, heating can be a large component of overhead costs, especially for growers in the North. As a result, some growers have lowered their growing temperature in an attempt to save on fuel costs. When greenhouse temperature is lowered, plants develop more slowly, so production time increases. The effect of temperature on crop timing depends on several factors, most notably on the crop grown. In this series of articles, we are presenting research-based information on the […]
June 12, 2008
Responses To Temperature & Light
Temperature and light are the two environmental factors that primarily influence production time and quality of both young and finish plants. Knowledge of how crops respond to changes in temperature and light can help growers predict crop timing in a variety of greenhouse environments. One of the questions we’ve been addressing is whether less energy is consumed for heating when growing crops cool but for a longer period of time, compared to growing crops relatively warm but in a shorter period of time. To answer this question, we first need to quantify how plants develop in response to temperature and light. We can then estimate the growing conditions in which the least amount of energy is consumed on a per-crop basis. Response To Light The total amount of photosynthetic light (daily light integral or DLI) that a plant receives can also influence plant development and quality. DLI describes the cumulative amount […]
May 27, 2018
Three Steps to Effective Greenhouse Humidity Control
High humidity levels in the greenhouse can lead to favorable conditions for fungi. Installing dehumidification technology is one way to better protect your crop.
May 26, 2018
What Sedan Floral Learned From its Recent Greenhouse Ex…
It’s important to start planning early. When you can work out little details ahead of time, the process goes much smoother, and you’re more prepared to deal with challenges when they arise.
May 25, 2018
Bailey Nurseries’ Ryan McEnaney Recognized for Marketin…
The Advertising Federation of Minnesota named McEnaney as one of its 32 Under 32 winners, representing the best up-and-coming marketing minds in the state.
May 25, 2018
Fluence Bioengineering Hires Former Battlefield Farms R…
Fluence Bioengineering is continuing to expand its in-house knowledge of greenhouse production with the hiring of Travis Higginbotham, formerly with Battlefield Farms, as its Director of Cultivation Support.
May 24, 2018
New Cannabis Greenhouse in Washington Nears Completion
Once the Marijuana Company of America’s new 30,000 square-foot facility is fully built, it will have the ability to house approximately 4,000 plants.
May 23, 2018
Collegiate Plant Initiative Helps Foster a Love of Plan…
CPI offers a unique perspective of the plant world, with the goal of connecting college students with exciting plants and teaching them more about opportunities in the plant industry.
May 23, 2018
How Low Substrate pH Can Cause Lower Leaf Chlorosis
Geraniums grown in substrates below an optimal pH range will exhibit chlorotic leaf spotting between veins, interveinal chlorosis, and marginal and leaf necrosis of the lower foliage.
May 22, 2018
Little Leaf Farms Expands Its Indoor Baby Greens Produc…
The Massachusetts-based company has increased the size of its greenhouses to 5 acres, more than doubling its annual production of baby greens.
May 22, 2018
Register Now for Award-Winning Online Greenhouse Growin…
Learn about production cost and profit, as well as the basic behind plant science, via two online classes being offered by the University of Florida.
May 21, 2018
Insights From Lawmaker’s Visit to a Top 100 Greenhouse …
When Rep. Julia Brownley of California visited Sun Valley Group, she got a firsthand look at a very busy time in the life of a flower grower.
May 20, 2018
Smithers-Oasis Now Offering Rootcubes Foam Media in Ret…
Designed with smaller or hobby growers in mind, the Rootcubes packs are also ideal for larger growers to use for trials.
May 19, 2018
Westerlay Orchids Shows Its Support for Local Schools
Proceeds from all sales the company made during the Carpinteria Greenhouse and Nursery Tour will be donated to fund STEAM (Science, Technology, Engineering, Art, and Math) programs.
May 17, 2018
Ian Baldwin: Why the Rise of the Under 35s Will Help Yo…
In his latest blog, garden retail consultant Ian Baldwin says this new generation of plant buyers is seriously engaged in gardening, and is using social media to help become successful plant owners.
May 16, 2018
2018 Perennial Plant Symposium Offering Power to the Pe…
Perennial and gardening enthusiasts of all experience levels are invited to attend plant discussions on Monday, July 30 for a chance to hear from the best in the field on a range of topics.
May 15, 2018
Floriculture’s Future Hangs in the Balance Between Labo…
The nation’s largest growers are investing heavily in technology, new structures, human resources, and efficiency measures to stay competitive and profitable, despite significant labor shortages.
May 15, 2018
Gotham Greens Expanding Greenhouse Production Into Balt…
Scheduled to open in early 2019, Gotham Greens’ Baltimore facility will bring a reliable, year-round, local supply of fresh produce to serve retail, restaurant, and foodservice customers throughout the mid-Atlantic region.