August 12, 2015
Selecting Fertilizer Rates For Several Spring Bedding Plants
Fertilizing bedding plants can be difficult due to the differing needs of the large variety of plants that we grow. Many operations do not grow enough of any one crop to cater the fertilizer specifically for each crop. Therefore, grouping crops with similar fertilizer requirements and having two to three fertilizer strengths available is a practical way to ensure plants are getting the fertilizer they need. With many new plant varieties on the market, we wanted to conduct a trial at Cornell University to determine best fertilizer rates for several common bedding plant crops. 22 Bedding Plants Studied To Establish Fertilizer Rates Plugs and rooted liners of 22 crops (Table 1) were transplanted into 4-inch (500 mL volume) round pots with a commercial peat/perlite based substrate. The plants were grown in a glass greenhouse at Cornell University during the spring season at a spacing of one plant per square foot. Heating set […]
May 14, 2015
10 Tips To Improve Retail Shelf Life Of Bedding Plants
Good-looking plants at retail lead to stronger sales and less postharvest shrink. Try these 10 ideas for maintaining quality and keeping plants looking beautiful.
October 30, 2014
Basics & Beyond: Comparing Substrate Fertilizer Amendments For Spring Bedding Plants
Cornell University researcher determines if substrate-incorporated slow-release fertilizers can be used to replace or reduce the need for liquid fertilizer for four spring crops.
July 24, 2014
Using Controlled Release Fertilizers To Produce Garden Mums
Researchers determined whether or not garden mums can be grown with controlled-release fertilizer, and if it reduces fertilizer leaching, as compared with water-soluble fertilizers.
May 8, 2014
How Cultural Factors Impact Fungus Gnat Populations
Cornell University researchers look at the impact cultural factors such as substrate amendments and substrate water-holding capacity have on fungus gnat populations.
August 14, 2013
Stress Is Good For Plants
Do your greenhouse plants live a life of luxury? Soaking up the sun, bathed in nourishing nutrients, in a temperature-controlled climate — your greenhouse is like Club Med for plants. But then reality hits as the plant is shipped to the retail environment and then brought into the “real world,” when the consumer brings it into his or her home or landscape. A plant that has been coddled in the greenhouse may not perform as well once taken to a more stressful environment. What’s a grower to do? One strategy is to purposely stress plants to make them more compact or enhance their ability to thrive once they hit a more stressful environment. Plant Stress, DefinedStress, as far as plants are concerned, can be generally split into two different groups: biotic and abiotic. Biotic stress is one caused by another living organism, such as disease or insect infestations. It is […]
August 14, 2012
When Fertilizing, Don’t Neglect The Root Zone
Bedding and potted plants are traditionally fertilized daily or several times a week with water soluble fertilizer (WSF) applied in the irrigation water. With WSF, the fertilizer components are in a form that can be directly absorbed by the plant. This also means the fertilizer components can immediately impact the soluble salts and the pH of the substrate. WSF are also in a form that can readily be leached from the root zone. When using controlled-release fertilizers (CRF) the nutrients are primarily held within the CRF prills and are not available for plant absorption until they are released slowly over time. Thus, when a CRF is added to the substrate, its effects on pH and salts are not immediate. Instead, they occur slowly over time as nutrients diffuse from the prills. Use the results from three studies to better manage the root-zone pH and electrical conductivity (EC) when using CRFs. […]
August 13, 2012
Bedding Plants and CRFs
While controlled-release fertilizers (CRFs) are not a recent addition to a grower’s toolbox, they are not nearly as common as traditional water-soluble fertilizers (WSF). Many growers comment that they don’t want to lose the control they have with traditional WSF programs. However, new formulations and technologies in CRF manufacturing, along with a desire for alternative methods of delivering mineral nutrients, have led to increased interest in using CRFs. The experiments below focus on using CRFs in greenhouse propagation and finishing of short-term bedding plant crops. How Fertilizer Studies During Propagation Were Conducted At Purdue, cuttings of several cultivars of angelonia, geranium, nemesia, New Guinea impatiens and petunia were stuck in 105-cell propagation trays filled with 3 parts soilless substrate and 1 part perlite. The trays either contained no fertilizer charge or 5, 10, 20 or 40 pounds of Osmocote Plus 15-9-12 with micros CRF per cubic yard of substrate. This […]
August 6, 2012
Potted Plants On CRFs
After seeing how bedding plants are affected by controlled-release fertilizers, three separate studies were conducted to show how the use of these fertilizers influenced the production of potted plants. The Poinsettia Experiments Rooted liners of ‘Premium Red’ poinsettias were potted into 4.5-inch containers filled with a commercial soilless substrate that was amended with CRFs: Osmocote Plus 15-9-12 and Osmocote Plus 16-9-12 applied at a rate of 7.9 and 7.4 pounds per square yard (lbs./yd³), respectively, and Nutricote 20-7-10 at 5.9 lbs./yd³. For comparison, a treatment of constant water soluble fertilizer (WSF) [15-4-15 Poinsettia FeED at 150 ppm nitrogen (N)] was also included. The plants were watered using drip irrigation as needed throughout the experiment, and a leaching fraction between 20 to 25 percent was maintained and adjusted weekly to accommodate for plant growth. Total leachate was also collected from the treatments and analyzed for nutrients each week. A second poinsettia […]
July 20, 2012
Finish Hanging Baskets In High Tunnels
Minimally heated greenhouse structures have long been used by the floriculture industry to finish crops. Although finishing hanging baskets in a high tunnel may be profitable due to lower input and capital costs, the high tunnel may be riskier since temperature is not directly controlled, resulting in a more variable market date. Cooler temperatures can affect the finish date. This case study compares plant quality and economics of finishing in a greenhouse versus a high tunnel. Plant Mixes Are Tested In Heat And High Tunnels An experiment was undertaken in central New York in 2011 to compare hanging baskets finished in a heated greenhouse with those finished in an unheated high tunnel. The study would note finish date, plant size, flower number and the overall profitability of the crops. Heated Greenhouses Result in Earlier Finshes At Cornell, the high tunnel baskets had about the same number of flowers as the […]
January 20, 2017
New Director of Sales for Bedding Plants and Perennials…
Anna Chernyavsky, who joined Danziger in August 2016, will be in charge of the U.S. and United Kingdom markets.
January 20, 2017
10 Trends Predicted to Impact the Workplace in 2017
Here are 10 workplace trends that Forbes contributor Dan Schawbel predicts for 2017 that may change the way you do business in the future
January 19, 2017
Bailey Nurseries Hosting Spring Previews in February
The previews, which provide education, new variety information, and retail support programs, will take place in Illinois, Minnesota, and Boston.
January 18, 2017
Looking at Glass or Polyethylene for Your New Structure…
Ethylene Tetrafluoroethylene, also known as EFTE, is a fluorine-based material that looks like a standard polyethylene greenhouse film but offers high light transmittance.
January 18, 2017
Upcoming Seminars to Focus on Managing the Greenhouse E…
The seminars, which will also be accessible online, are presented by the University of Arizona’s Controlled Environment Agriculture Center.
January 17, 2017
Two Major Growers Recovering and Rebuilding After Fires
The blazes occurred at Dan Schantz Farm and Greenhouses in Zionsville, PA, and Spring Meadow Nursery in Grand Haven, MI. Both companies say no employees were injured, and they plan to pull together and stay on schedule for the remainder of the year.
January 17, 2017
Dallas Johnson Greenhouses Owner Passes Away at 78
Dallas G. Johnson, who started the company in 1985, is survived by his wife, Kay, and two children.
January 17, 2017
Sakata Seed Names New Senior Sales Manager for Ornament…
Joe Cimino comes to Sakata with past experience at Sun Gro and Florexpo.
January 17, 2017
Ernst Benary Partners With Chinese Young Plant Grower o…
The partnership creates a new company called Jinpin Flower Seedling Company, which will focus on providing young plants to the rapidly growing Chinese bedding plant market.
January 17, 2017
Stephanie Whitehouse Takes Her Passion for Plants to Di…
Stephanie Whitehouse, who has spent the last seven years as the Sales and Marketing Director for Peace Tree Farm in Kintnersville, PA, recently joined Dickman Farms Greenhouse and Garden Center in Auburn, NY, as the company’s new Retail General Manager.
January 13, 2017
We Must Help Heal Our Nation, with Plants and Flowers […
No matter how you may feel — personally or professionally — about the outcome of the election, it’s likely that you realize our nation has some healing to do.
January 12, 2017
Prevention and Early Intervention: The Keys to Biocont…
Advance preparation and starting out right helps you implement an effective biocontrol program that reduces pest pressure.
January 11, 2017
New Tropical and Foliage Plants That Offer Hidden Benef…
Tropical and foliage plants can offer extra paybacks to your customers in terms of health-promoting benefits such as filtering the air, reducing stress, and absorbing noise. Consider these new varieties, hitting the retail market in 2017, for your product mix.
January 10, 2017
Sidney B. Meadows Scholarship Endowment Fund Accepting …
The deadline for applications is May 26, and 12 scholarships of $1,500 each will be awarded at the SEGreen Conference in August.