Expand all + Questions about your garden? If you have a question about your home garden, then Ask Extension can help by phone, email, or in person. The Extension website has articles about most of the plants that grow in Minnesota, as well as tools to help identify weeds, insects, and diseases. + Is your plant looking a little sick? Submit a disease sample to the Plant Disease Clinic through the Department of Plant Pathology. + Questions about trees? Contact a Minnesota Tree Care Advisor. + Looking for soil testing or fertilizer recommendations? Contact the Soil Testing Lab. + Need help with pest management or identification? Contact the Department of Entomology. They can help with everything from pest identification to pest management.