Their product, Rotstop, is a root treatment agent that prevents the spread of root rot fungus on pine and spruce trees. They also offer a blue stump marker and provide fungicide and pesticide products for controlling plant pathogens and diseases caused by Alternaria fungi. Verdera's biopesticides work through metabolite production, mycoparasitism, competition, and hyperparasitism, providing forest owners and farmers with effective and environmentally friendly solutions for plant protection.