U.S. beekeepers lost more than a fifth of honey bee colonies this past winter — fewer than the winter before. Research shows there are fewer losses among beekeepers who carefully treat their hives to control a lethal parasite called the Varroa mite.

To demonstrate good environmental stewardship, growers need an understanding of the issues presenting risks to bees and of strategies to minimize the risks. Knowing where to find key product information and how to interpret it can help growers make sound choices regarding the application of effective products.

This is the second article of the four article series highlighting the production and use of pine wood chips as aggregates in greenhouse substrates.

Dr. Joe Bischoff, AmericanHort’s director of regulatory and legislative affairs, says it is important that we are informed and prepared to talk about the issue of pesticides, pollinators and the overarching concerns of bee health in a calm and clear manner. This is a topic where emotions can run high, and part of our role should be in explaining the need for balance and scientifically based solutions.

Cornell University researchers look at the impact cultural factors such as substrate amendments and substrate water-holding capacity have on fungus gnat populations.

A journey just over the United States’ border led Cascade Cuts of Bellingham, Wash., to begin using biocontrols. Alison Kutz, owner of Cascade Cuts greenhouses, explains the challenges and opportunities brought about with biocontrol implementation.

In recent weeks, several growers have contacted Michigan State University Specialists about leaf discoloration on geraniums, especially the purpling of lower leaves.

Greenhouse growers will be challenged by weather forecasts for cloudy and rainy conditions favoring Botrytis blight. Remembering cultural practices and correct fungicides will help until we get more sunshine.

The impact of systemic insecticides on bees and other pollinators is not new phenomenon. Kansas State University Entomology Professor Raymond Cloyd says we, as an industry, need to work together to provide unbiased information that is based in sound science.

What your potted plants look like at retail translates to sales or fails. North Carolina State University researchers report on how two postharvest care products performed.

Following the suggestion of a user of Companion Biological Fungicide, Growth Products has made improvements to the product’s packaging to make it easier to handle and more durable.

Control plant growth with these latest introductions in PGRs.

Growers of short-term vegetable or ornamental crops should have an easier time switching from conventional mineral fertilizers to organic fertilizers.