View All: Articles

November 07, 2005
Well, we don’t have a banner year for the availability of new chemistry or new labels, but there are two new paclobutrazols, Paczol (Chemtura Corp.) and Downsize (Greenleaf Chemical LLC), and a new gibberellin/ cytokinin product, Fresco (Fine...
July 12, 2005
The “liner dip” is a new and effective method for applying plant growth regulators (PGRs). It is an efficient way to treat large numbers of plants with minimal labor and chemical. Liner dips can be particularly beneficial for very vigorous crops...
May 17, 2005
The letter in question here is Q. What does it mean to have Q-Biotype whiteflies instead of B-Biotype whiteflies. The quick answer is no one really knows yet, but it’s the long answer that the industry has been grappling with for the past few weeks...
April 25, 2005
Producing compact bedding plants often involves a chemical means of height control. Sumagic (uniconazole, Valent USA Corp.) is a plant growth-regulating chemical that reduces stem elongation and is used to control height of ornamental plants. In...
March 04, 2005
With spring season nearly upon us (or in full swing for those growers far south and west), everyone is getting extremely busy taking care of all those crops in the greenhouse. Days are full of transplanting, watering, moving crops, spraying and...
November 11, 2004
In my 18 years of working with plant growth regulators (PGRs), I have never had a more active research year; we have worked with more potential PGR products this year than ever before and are also seeing a lot of interest in applying old chemistries...
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
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...
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
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
Growers are challenged to keep 4- and 5-inch annuals with trailing, spreading growth habits sufficiently compact. It is of great interest to growers to find plant growth regulators (PGR) that stimulate lateral bud development and branching and...
April 16, 2004
As consumers realize their appeal, pansies and violas are increasingly being planted outdoors in late summer and early autumn. Consequently, the production of flowering pansy continues to increase, especially for sales in late summer. To meet...
December 12, 2003
Though the Scrophulariaceae and Verbenaceae family names may not sound too familiar, you've most certainly grown some member species. Here, we will look at the currently known responses of perennial plants from these families to plant growth...
November 06, 2003
Each year when we do this special chemical section in GPN, I'm a little envious of the insect and disease folks; they always seem to have new stuff to talk about. New plant growth regulators (PGR) just do not come along as fast. In fact, for the "...
November 04, 2003
Increasingly, greenhouse growers are applying plant growth retardants to bedding plants during the plug stage. Spraying plants when they are in the plug stage is a very efficient way to treat them, since there are so many in a small area. It's also...
August 08, 2003
A number of new and innovative methods of applying plant growth regulators (PGRs) have gained EPA approval in recent years. PGRs may be applied by "sprench" (combination of spray and drench applied as a high volume, low concentration spray to the...
July 10, 2003
Fuel prices continue to fluctuate, causing heartburn and headaches for growers as they receive their monthly fuel bills during periods of cold weather. When fuel costs are high, some growers in cold climates (such as the Northern United States) have...
July 10, 2003
FloraStar, in cooperation with the University of Florida, has selected the winners of the first FloraStar Elite Performer trials that are designed to evaluate how well a variety performs for the grower. The program will focus on vegetative annuals,...
July 10, 2003
The following report of diascia and nemesia trials conducted at the University of Florida trial gardens in Gainesville, Fla., was conducted in the winter of 2002. Gainesville is in USDA Zone 8b and is part of an ongoing research program to evaluate...
July 10, 2003
Have you noticed how popular calibrachoas have become? It is an interesting crop. They can either look very nice or very straggly. The flowers are small, and unless there are lots of them, the plant does not give much of a show. In terms of...
Email Subscriptions