November 26, 2012
Focus On Dahlia Fertilizer
Dahlias can be grown from seed, plugs, liners or tubers. The newest dwarf varieties have brought intense color and appeal to our customers, which makes this crop a staple value-added selection for the early spring holidays. Fertility Early On In propagation, dahlias prefer to be kept in evenly moist media at a pH below 6 (5.5 to 5.8). Before the signs of first leaves, begin to fertilize with calcium-based formulas, like 15-0-15 or 13-2-13 at 75 ppm. The calcium in these formulas is associated with nitrogen as NO3, which is easily taken up by newly forming root systems. After seven to 10 days, increase your fertilizer rate to 100 to 150 ppm using the same formula for another seven to 10 days. After these initial two weeks, you can use the same formula selection or incorporate a more potentially acidic fertilizer like 21-5-20 as an alternative to keep the pH […]
November 14, 2012
Focus On Fertility: Osteospermum
Osteospermum is a tender perennial, now classified outside of the dimorphotheca genus. In the more temperate climates, it can overwinter. However, when exposed to reoccurring frost or true freezing temperature, it will act as an annual. To homeowners, it goes by the common name of daisy or African daisy due to its flowers, which can vary in shape from small, large and spoon-like patterns. Producing this crop in a greenhouse can be done in many different container sizes to accommodate small-space containers, hanging baskets and also larger landscape plantings. Fertility requirements, however, remain the same. A Strong Root System At the youngest stage, hybrid osteospermum can best take up nutrients in the media when kept in an evenly moist environment at a pH between 5.8 and 6.5. Osteospermum have longer stems and need to support a large flower, so establishing a strong and healthy root system is key. Begin by […]
September 12, 2012
Focus On Fertility: Coleus
Coleus is a versatile plant that is favored in container and landscape settings due to its rapid growth and high tolerance to environmental conditions. To homeowners, it is known as the plant that almost anyone can grow well. Its varying and unique habits, from trailing to mounding, shade to sun and a rainbow of colors and leaf shapes allow flexibility for any landscape. So how does this affect fertility when producing these plants in the greenhouse? At Propagation At the youngest stage, either sown seed or vegetatively propagated, coleus can obtain nutrition in the media when kept in an evenly moist environment at a pH between 5.5 and 6.0. However, rather quickly after germination or transplant, it is important to focus on establishing a strong and healthy root system. Begin by applying fertilizer on a constant basis at a low rate of 50 to 75 ppm. You can achieve the […]
August 25, 2008
Producing poinsettias in today’s competitive market requires a great commitment of time and energy (and a bit of Tylenol). Taking steps that make your operation more sustainable can greatly increase your overall efficiency, reduce waste and boost your price per finished plant. Preventing nutrient imbalances that lead to deficiencies and toxicities can add a few extra steps at the start of the season, but you will reap the rewards, not to mention avoid the devastating damage a disease can spread throughout your entire greenhouse. Tracking the nutrient and disease status of your crop will improve your efficiency by saving you time on the end. Here are some ways crop tracking can improve your plant quality as well as overall sustainability. An ounce of prevention is worth a pound of cure; it may be a cliché, but its message is worthwhile. As we come into another poinsettia season, we often are […]
June 16, 2008
Growing Green: Water Soluble’s Place In Sustainability
It is not often that you see the words “mineral fertilizer” and “sustainability” in the same sentence. Responsible use of nutrients in regards to fertilization should be one of the main factors you consider when evaluating how your operation can become more sustainable. Is organic the only way to go or are there other solutions in regards to fertility? When overall plant quality is a concern in potted plant production, is it feasible to produce your best plant material without the control that typical mineral-water-soluble fertilizers provide? Mineral fertilizers have played a huge part in the construction of what our horticulture industry is today. In the early part of the 1950s, greenhouses were popping up all over our country as the love of gardening moved out of the farm and into suburbia. Home consumers searched for attractive flowers to beautify their homes in expansive flower beds. The commercial greenhouse grower […]
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.
January 10, 2017
Pest Management Workshop to Take Place in Virginia on J…
Battlefield Farms will host the workshop, which is being coordinated by Virginia Cooperative Extension and will focus on new techniques in disease and insect control.
January 10, 2017
Greenhouse Grower Quadcopter Sweepstakes Winner Announc…
Anne Bolser of Van Wingerden International was the Grand Prize Winner in Greenhouse Grower magazine’s recent Quadcopter Sweepstakes.
January 8, 2017
Sakata’s Participation in Tour de Fresh Race Results in…
On the heels of riding in the Tour de Fresh Race in July, Allen Satterlee of Sakata Seed America celebrated by presenting a new salad bar to Galt Elementary School in California.
January 6, 2017
Griffin Opening New Hard-Goods-Focused Distribution Cen…
The planned February opening of the 18,500 square-foot facility is part of the company’s continued expansion into the Western U.S.
January 5, 2017
Successful Propagation of Purple Fountain Grass From Si…
In the first article of a two-part series, researchers discuss how propagation daily light integral and root-zone temperature influence root growth and development of single-internode purple fountain grass culm cuttings.
January 5, 2017
Why ArizonaEast Is Expanding Its Succulent Production T…
In Greenhouse Grower's January cover story, learn how Brian and Joe Vitale of ArizonaEast saw a chance to expand and diversify their New Jersey-based succulent operation, and why they jumped at the opportunity.
January 4, 2017
Green Industry Poised for Continued Economic Growth in …
Positive economic indicators point to 2017 being a year of modest growth for the green industry, according to economist Charlie Hall.
January 3, 2017
Growing Optimism for the Horticulture Industry in 2017
With a new administration and a new Congress, AmericanHort's Craig Regelbrugge says the horticulture industry has reason to be cautiously optimistic that regulatory relief could be on the horizon.
January 3, 2017
Southern Nursery Association Research Conference Procee…
On the heels of presenting awards to students in the horticulture industry, the Southern Nursery Association has compiled and published its conference research proceedings.
January 3, 2017
Expect Big Changes for California Spring Trials 2017
California Spring Trials 2017 will be here before you know it. Find out what you can look forward to and get a head start on planning and registering for your trip.
January 2, 2017
Why You Need To Know What’s In Your Growing Media…
Before you buy growing media mixes or raw materials to mix your own custom blends, here are some important factors to consider.