March 26, 2014
Producing Hydroponic Culinary Herbs
Switching over to tomato, cucumber or pepper production can be a big change for any greenhouse. These crops have long production cycles and may not fit as easily into windows of opportunity between ornamental production cycles. However, culinary herbs are a relatively quick and can easily be grown in simple hydroponic systems.
September 12, 2012
Produce High-Quality Rooted Cuttings
Whether you are a propagation specialist or are rooting cuttings for your own in-house production, the goals of propagators are the same — to efficiently produce high-quality rooted cuttings. In order to meet the spring and early summer market dates for flowering bedding plants, cuttings are typically rooted in mid- to late-winter and early spring when the outdoor daily light integrals (DLIs) are at seasonally low levels. The DLI inside a greenhouse is often further reduced as a result of glazing material and interior structures, as well as hanging baskets suspended above benches to maximize production space. Research has recently shed some light on the impact of light levels during propagation of New Guinea impatiens and petunias. However, the number of species and cultivars grown from cuttings is quite large and diverse. Therefore, we wanted to better understand the impact of DLI during propagation on growth and quality of several […]
September 12, 2012
Reduce Flowering Time
This is the second article in a two-part series looking at the effects of light during cutting propagation. While the first article focused on the effects of daily light integral (DLI) during propagation of rooted cuttings, this article will focus on finished plants. We wanted to see how DLI during propagation affected growth and flowering after transplant, as well as identify how the DLI during propagation interacted with the DLI during finishing to influence crop timing and quality. Study 1: Lighting During Propagation Cuttings of Angelonia ‘AngelFace White,’ Nemesia ‘Aromatica Royal,’ Osteospermum ‘Voltage Yellow,’ and Verbena ‘Aztec Violet’ were stuck in 105-cell trays and placed in a propagation greenhouse with an air and substrate temperature set point of 73°F and the average DLI was maintained at about 5 mol•m¯²•d¯¹. After seven days, cuttings were placed under a range of DLIs, from 1.2 to 12.3 mol•m¯²•d¯¹, achieved using supplemental light from […]
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. […]
July 18, 2012
High Tunnels: Grow Better Bedding Plants In Cold Weather
Bedding production begins in mid- to late-winter and early spring in the northern half of the U.S., when outdoor air temperatures and light are at seasonally low levels. During this time, greenhouses must be heated to maintain desirable production temperatures. The costs involved can be huge. Energy for heating in northern climates accounts for 10 to 30 percent of the total operating costs of commercial greenhouses. So it makes sense to find alternative strategies. Our research shows that high tunnels are a viable alternative for plant producers. High tunnels are an unheated polyhouse or hoop house covered with a single layer of plastic, although a double layer of plastic or additional covering inside may be used. In floriculture, high tunnels are most commonly used in cut-flower production for season extension and protection against frost, rain and wind. They are also used to produce and overwinter containerized herbaceous and woody perennials. […]
January 6, 2012
Height Control For Easter Lilies
Flurprimidol drenches have been shown to successfully control height of oriental lilies and Dutch bulbs such as hyacinth, narcissus and tulips, but there is no data that shows how effective flurprimidol drenches are on Easter lilies. Researchers decided to find out.
July 25, 2011
Graphical Tracking: The Basics Of Monitoring
Figure 2. Long, thin and weak poinsettia stems due to tight spacing (shade avoidance response) on the greenhouse bench. Scroll down to see the rest of the figures for this story. Controlling height is a major challenge for growers with most floriculture crops. Unfortunately, not only do environmental growing conditions vary from year to year due to the weather, but growers must continuously adjust their height management strategies due to the introduction of new cultivars, shipping dates and container sizes. We are all aware of the consequences of crops that do not meet or exceed maximum height requirements: poor quality and damaged plants, higher shipping and labor costs and, ultimately, shrink. So how do you make decisions related to height control in your greenhouse? Relying on your plant growth regulator (PGR) crop notes from last year may not be the best strategy to follow. The first step in making educated […]
June 14, 2011
Monitoring The Greenhouse Environment
How do you make decisions related to crop production in your greenhouse? The most common decision-making aids are notes made during previous production seasons and reacting to problems that arise. While using notes and reacting to situations as they arise are commonplace, each season and year is going to be different than the previous one. The first step toward making educated decisions and avoiding problems is to monitor factors that affect your crop production. Constant monitoring can help growers make decisions and help manage the causes of problems as opposed to treating symptoms. This is the first article in a series focused on monitoring the greenhouse environment, plant growth and development, substrate pH and EC and water quality, and greenhouse pests and diseases. These articles will provide concepts and ideas to help you develop a comprehensive greenhouse monitoring program. This particular article will focus on monitoring the greenhouse environment. Because […]
July 28, 2016
How To Maximize The Efficiency Of Your Cannabis Structu…
The up-front costs of creating your cannabis facility may be high, but at least one expert says making the investment now will be well worth it down the road.
July 27, 2016
The Top 5 Myths About Cannabis Production Cleared Up
There is a lot of misleading information going around about growing cannabis. Industry insider James Lowe makes sure you know the truth about cannabis production.
July 26, 2016
SAF Partners With Cornerstone Government Affairs To Adv…
A new partnership between the Society of American Florists (SAF) and Cornerstone Government Affairs ensures that SAF will continue its highly effective work advocating for issues that affect the floriculture industry. “SAF and Cornerstone together provide experienced voices on Capitol Hill to protect our growers’ interests,” says SAF CEO Peter Moran. “We’ll continue to move major policy priorities forward on behalf of small business and agriculture.” Cornerstone is a public affairs firm specializing in government relations, strategic consulting, and advocacy. Its team of more than 50 senior professionals includes former senior professional staff from both authorization and appropriations committees and the U.S. Department of Agriculture (USDA), as well as veterans of the horticulture industry. Agricultural and horticultural issues of primary concern to SAF members include access to labor, immigration, crop protection, international trade and other matters related to the day-to-day operations of growers. Before she retired this year, SAF lobbyist Lin […]
July 26, 2016
AFE Releases New Videos Highlighting Industry Successes
The American Floral Endowment (AFE) recently released five new videos, created to highlight floriculture successes through industry collaboration, support, and participation. “Each video shares real stories from industry members on career development through scholarships and internships, and true examples of research solutions that have shaped how the industry operates today,” says Laura Shinall, President of Syndicate Sales, Inc., and AFE Public Relations and Development Chair. “We’re excited to be able to share some great success stories in an effort to increase industry participation.” The introductory video “Heard of the American Floral Endowment?” helps educate those who aren’t currently aware of AFE’s programs, while other segmented videos (retail, wholesale, grower) share how Endowment programs complement each group and why it’s so important that everyone in the industry participates: Retail Florists Share Why They Turn to AFE New Resources for Floral Wholesalers and Suppliers AFE Helping Growers Profit Ready for a Career in Floriculture or Horticulture? […]
July 26, 2016
How Your Retail Plant Sales Practices Compare
Editor’s note: Greenhouse Grower RETAILING asked growers and retailers to share their pricing methods in a survey sent out in mid June 2016. Of the 362 responses, 202 arefrom those whose primary business is garden retail. We will be sharing the results of what we learned throughout July, August, and September 2016. Discounting plants is a finely wielded weapon for plant retailers, Greenhouse Grower RETAILING‘s Plant Pricing Survey shows. It will come as no surprise that just about everyone holds sales at some point (93%). And so it makes sense that some expertise is shown. Take this first graph as an example. The most perishable plants — small annuals and vegetables — are the most likely to be placed on sale. That seems counter-intuitive. Why place the fastest turning inventory on sale? But when we took a closer look, we found that these sales are being used to lure […]
July 25, 2016
How You Can Stop Aphids By Understanding Their Interact…
Knowing which aphids target which crops and how aphids colonize and move on plants goes a long way toward setting up an effective management plan.
July 25, 2016
Cultivate Keynote Speaker Highlights Seven Principles O…
In his morning keynote address at Cultivate’16, best-selling author and speaker Jeremy Kingsley noted that if you want to make your business better, the process should start with making your people better by inspiring them.
July 24, 2016
Horticultural Lighting Conference To Take Place In Chic…
The one-day event is designed to provide cutting-edge information on the latest technologies and techniques impacting the advancement of the horticultural lighting market.
July 23, 2016
AmericanHort Kicks Off Cultivate’16 By Announcing Major…
Even though Cultivate’16 just wrapped up, it’s not too early to find out about the many changes you can expect for 2017.
July 22, 2016
Pleasant View Gardens Targets Millennials With Savor Ed…
Taking something as ubiquitous as vegetables and herbs and giving it a fresh new look is no easy task, but Pleasant View Gardens took on the challenge with extensive research and creative marketing.
July 21, 2016
Dümmen Orange Opens New North American Headquarters In …
The new office, which officially opened during Cultivate’16, supports the company’s vision to be integrated into a vibrant and inspiring community, and provides a bright, modern workspace for its approximately 30 local employees.
July 20, 2016
Sakata Seed Develops World’s First Pollen-Free Lisianth…
With no stamen to produce pollen, the new Lisianthus varieties have improved flower durability and the benefit of no scattered pollen that can cause staining of flowers and machines.
July 20, 2016
Research And Commercialization Unite At The New Vinelan…
The new, pre-scale commercial greenhouse facility at Vineland Research and Innovation Centre in Vineland Station, ON, will help accelerate the commercialization of innovative technologies and products coming out of research.