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January 11, 2002
What are the advantages of insect screening? Properly installed insect screening restricts the entry of insects and pests and reduces pesticide use. What are the disadvantages of insect screening? The disadvantages of insect screening include...
January 11, 2002
The natural human tendency when confronted with a problem is to spring into action. For the ornamental producer, this means you want to spray something on the disease. It is hard to stop and take the time to understand the situation, but reflection...
January 02, 2002
Three for $10, $2.99 with your supermarket card. Is no price too low for the beleaguered poinsettia? How did we get here, and what can we do? For years, growers have looked to reduce crop cost as the way to make money with poinsettias. But there is...
January 02, 2002
With my November editorial, I had hoped to end my campaign against the big box store’s treatment of growers, but developments since last month — in the form of additional policies from the boxes, their effects on growers of all sizes and a...
January 02, 2002
This past summer, I attended a community class called “How to spot and buy gardening trends.” Going into the class, I knew I had the basic knowledge about what is and isn’t trendy, and I assumed I could figure out how to buy it, but was I ever wrong...
January 02, 2002
I’ve always been intrigued with what Mother Nature has imbued in plants and animals to allow them to survive in the complex ecosystem they exist in. Some of these are behavior traits, while others are physical attributes; some are genetic, others...
December 31, 2001
How many trucks does it take to deliver a rose? If that rose is from Mexico, it could take quite a few. Mexican carriers, of flowers, fruit and any other cargo coming into the States, were scheduled to have full access to U.S. highways as of...
December 31, 2001
What is greenhouse film? Greenhouse film is generally ultraviolet-protected polyethylene (similar to sandwich bags) with a thickness from 2-8 mm in the United States. What are the three different categories of glazing? Type I: Thin films,...
December 28, 2001
The most important goal in the application of agricultural pesticides is to get uniform distribution of the chemicals throughout the crop foliage. Underdosing may not give the desired coverage and control needed. Overdosing is expensive as it wastes...
December 28, 2001
Tuberous root development and flower induction of dahlia are controlled by photoperiod; however, photoperiod manipulation is generally not used in their production. Seed-propagated plug production typically takes place under the short days of late...
December 28, 2001
Tall, open spikes of bell-shaped flowers mark the distinctive cut flower ‘Canterbury Bells’, or Campanula medium. The Champion series sports 1- to 1 1/2-inch-long, upward-facing flowers in four colors: Blue (actually purple), Pink (nice, clear pink...
December 28, 2001
Last year, for the first time, GPN published a table, summarizing efficacy results for fungicide and bactericide ornamental trials at Chase Research Gardens. This year, we decided to do the same thing as an annual update. This chart represents five...
December 28, 2001
This is the time of year when the editors of GPN ask for information on what has been happening with insecticides and other related chemicals and predictions for where they are headed in the near future. Based on recent events, it’s difficult to...
December 12, 2001
The temperature and light environment delivered to a pansy crop has a great impact on crop timing and quality. In general, the highest-quality pansies are grown under high light levels and cool temperatures, while the poorest quality occurs under...
December 03, 2001
A new introduction to American Takii’s lineup of unique plants is the Lobelia erinus ‘Aqua’ series, and the following will help the grower produce the best lobelia possible. ‘Aqua’ made its debut with four dynamic colors: Lavender, Blue with Eye,...
December 03, 2001
Ned Bradford’s dream of owning his own greenhouse business may have been planted in his future long before he even knew it would one day become a reality — when he was just a young boy pulling weeds for a quarter at his grandfather’s landscape...
December 03, 2001
As you can probably imagine, given the controversial nature of the editor’s report in the September and October issues of GPN, my phone and E-mail have been filled the past month with grower, supplier and retailer comments. (Turn to page 82 for a...
December 03, 2001
Substrate testing is a great tool to help ensure a healthy, profitable crop and to identify improper nutritional trends before problems occur. For most situations, monitoring pH and EC (electrical conductivity) in the greenhouse is sufficient to...
December 03, 2001
Rudbeckia, or black-eyed susan, is a well-known perennial garden plant. The two most commonly grown species are Rudbeckia fulgida and Rudbeckia hirta. R. fulgida is a perennial herb that grows to a height of at least 24-30 inches; R. hirta is often...
December 03, 2001
Most growers are familiar with aphids, but did you know there are aphids that attack the roots of plants? Yes, the roots. You may be used to looking for aphids on foliage and stems, but with these aphids, you need to pull off the pot and look...