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October 13, 2004
While visiting a grower the other day and going over his crop of pansies, mums, and flowering kale and cabbage, the main comment I had was that the plants looked like they needed more feed for growth to cover up the pots. The grower said he was...
October 13, 2004
Whiteflies can be difficult pests to manage, especially in greenhouses where they enjoy a high-quality food supply, favorable environmental conditions and minimal protection from natural enemies. Whiteflies damage a number of crops: verbena, fuchsia...
October 13, 2004
In Part I (GPN September 2004) we discussed what happens to plant growth when we grow crops cooler. Here, we will discuss how dropping temperature affects diseases and insects. In addition, to help you decide if there is a benefit for your business...
September 13, 2004
With fuel prices escalating this fall, now is a good time to evaluate how efficiently you are using the growing space in your greenhouses. The cost of providing the right environment is the same whether you are utilizing 50 percent of the space or...
September 13, 2004
Powdery mildew is one of the most common types of diseases on ornamentals. Some common hosts include rose, gerbera daisy, salvia, pansy, hydrangea, begonia, African violet, crape myrtle, delphinium, zinnia, azalea, sunflower, ranunculus, grape ivy,...
September 13, 2004
While ‘Freedom Red’ was the most important poinsettia variety in most of the country over the past 10 years or so, heat delay was not a topic that was discussed very much. However, with ‘Prestige’ becoming such a popular variety, we are hearing...
September 13, 2004
It is estimated that approximately 80 percent of the cost of heating a greenhouse is incurred at night. Given the long nights of winter in the North, heating is clearly a major cost in plant production. In addition, the dramatic increase in fuel...
September 13, 2004
The first calibrachoas were introduced only 12 years ago, but this has already become an important spring crop. Its rapid growth has been both because calibrachoas are popular with consumers and because they have a good growth habit for baskets and...
August 10, 2004
Mimulus — not a crop you hear much about but should. The Magic series from Floranova grows approximately 10 inches high with flowers that are 1 3/4-2 inches in diameter. Magic has a very short production time under long days, with flowering 6-7...
August 10, 2004
In the past decade, the perennial industry has become a significant segment of floriculture crop production. Similar to vegetative annuals, new cultivars of perennials are released every year, many of which are propagated by cuttings. In most cases...
August 10, 2004
For over five centuries gardeners and landscapers have been utilizing campanula species to accent their gardens. With more than 300 species in the genus campanula, a number of forms and textures are available for gardeners to incorporate into today’...
August 10, 2004
Are you ready for another twist to growth regulator applications for poinsettias? Many growers become very structured and resistant to change when it comes to how to grow poinsettias. Poinsettias are such a big crop with a long crop time and many...
August 10, 2004
Cultivating plants without soil, the accepted definition of hydroponics, continues to gain popularity within commercial horticulture, and as it does, more and more products are developed for it. More sophisticated lighting, easier to mix nutrients...
August 10, 2004
This crop was mentioned in last year’s Pack Trials coverage, and since then, we have done some work on its production. The genus phygelius is a wonderful group of somewhat fuchsia-like plants that come from South Africa and belong to the...
July 08, 2004
Now that the spring season is behind everyone, it’s time to look back at how well you were able to grow vegetative annuals. I know I have written about growth control of these plants before, but I think this is a good time to reiterate what was...
July 08, 2004
Profitability in the greenhouse industry relies on high yields, innovative methods of production, new plant varieties, structural design, environmental controls, marketing, shipping and much more. Integrated Pest Management (IPM) programs play a key...
July 08, 2004
We are seeing rapid growth in the market for plants that can work in 41?2-inch to 1-gal. containers. In the industry’s quest for what’s new to be put in smaller containers, we sometimes overlook old favorites. An example is ivy geraniums; our...
June 18, 2004
The numbers are rising. People are investing more and more money and time in their gardens and backyards. According to The National Gardening Association, lawn and garden sales increased from $30.2 billion in 1998 to $38.4 billion in 2003, and just...
May 12, 2004
This year’s winter trials were a real learning experience here in Florida. We had a series of night temperatures around 20-22º F, and that really impacted results and performance of almost all entries. The purpose of the winter trials is to look at...
May 12, 2004
Carrying on the tradition, All America Selections, All America Rose Selections, Fleuro-select and FloraStar have selected the variety winners for the 2005 growing season. Each variety has been judged based on a standardized grading system and passed...
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