We highly recommend organic fertilizers to feed your plants in the ground. A Cooperative Extension agent explained it this way to me a long time ago: giving your plants in the ground the blue liquid is like feeding your kids M & Ms. Not a healthy diet for plants you want to be able to grow and weather our tough climate conditions. Organic (natural mineral based) fertilizers feed the soil, which helps feed the plant, truly a meat and potatoes, or pasta and meatballs kind of meal. For healthy plants, you can use a general purpose organic like one of Espoma’s Tones, or North Country Organics Pro-Gro. For acid loving plants we recommend the Pro-Holly or Holly-Tone. Check out our bulk and bagged page for more information.