All of the fertilizers & pesticides we sell are OMRI listed or certified Organic. One of the biggest mistakes we see beginners make is to assume that "organic" means no fertilizer. What Organic actually means is no synthetic fertilizer. People have been using natural products (manure, bone meal, crab shells, feather, bird dung, seaweed, etc.) to grow food since the dawn of agriculture. Our granular fertilizers are a modern version of the same practice, made with all natural ingredients. It is absolutely necessary to amend your garden soil with a granular fertilizer, and its highly recommend to use a liquid foliar amendment to continue adding fertility after planting.