http://www.gpnmag.comLatest Articles From GPNMag.com and Greenhouse Product News (GPN) magazine - Horticulture and Commercial Growers60http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11224Different methods of greenhouse lighting have different purposes — sometimes to extend the photoperiod and sometimes to increase the daily light interval. Knowing their differences may help you make better choices for your operation.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11224http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11223This series of tuberous begonias — in fiery red and vibrant pink hues — is compact and well behaved for growers…but creates fireworks in the garden.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11223http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11222They aren’t just for the holidays anymore: Cyclamen are winter hardy and a great addition to many perennial gardens.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11222http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11221Failed germination is an occupational hazard for greenhouse growers, but losing seedlings after germination can be heartbreaking. Here are a few reasons this can happen and how to avoid it in your crops.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11221http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11220Research indicates that more than 70 percent of all gardeners keep the tags from the plants they bought and use them as garden markers or for future reference. Do yours provide the best information possible? Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11220http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11219A plant growth regulator recently received a supplemental label for foliar sprays on vegetable transplants, including tomatoes. Experiments at the University of Florida and University of Kentucky show high effectiveness for height control.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11219http://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11217I’ve never really liked that battle cry, but I have kind of learned to live with it.Wed, 28 Oct 2009 00:00:00 GMThttp://www.gpnmag.com/index.cfm/fuseaction/showArticle/articleID/11217