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

Damp conditions can lead to both rust and edema in geranium. Here’s some advice on scouting and treating each.

Properly filled pots, the correct media substrate and efficient watering will help avoid production and disease problems.

The Dümmen Group has released a statement to clarify growers’ options regarding regulations the Kansas Department of Agriculture (KDA) placed on petunia cuttings sourced from Dümmen’s Las Mercedes, El Salvador farm during weeks 51 through 7.

Despite efforts to thwart downy mildew, growers, researchers and landscape experts are predicting a continued impact on Impatiens walleriana supply issues for the 2014 season.

Greenhouse Grower talked to the Kansas Department of Agriculture’s Plant Protection and Weed Control Program Manager Jeff Vogel to learn about the Kansas Pest Freedom Standards and how the state is regulating tobacco mosaic virus (TMV) on petunias this season.

The Kansas Department of Agriculture (KDA) has ordered growers and retailers to destroy all petunias received from the Dümmen Group’s Las Mercedes, El Salvador farm.

The Kansas Department of Agriculture is asking growers and retailers to follow regulatory action and recommendations in scouting petunias for symptoms of tobacco mosaic virus (TMV).

In a recent study, SaniDate 12.0 and ZeroTol 2.0 from BioSafe Systems were evaluated as sanitizing products to control fusarium in irrigation water.

A recent study has determined the effectiveness of OxiPhos and ZeroTol 2.0 in controlling impatiens downy mildew.

Growers who have received Red Fox brand petunia cuttings from the Dümmen Group’s Las Mercedes, El Salvador stock plant facility should inspect unrooted petunia cuttings and plants for any symptoms of tobacco mosaic virus (TMV).

Here is the advice Dümmen shared with its customers on scouting and preventative measures for dealing with TMV on petunia.

Keep your plants healthy and protect them from pathogens with these fungicides, bactericides and herbicides.