Rainbow Farms Mealworm Fertilizer is 100% natural and 100% vegetarian approved for all garden edibles, plants, flowers, fruits and medical cannabis growing. Unlike other fertilizers bearing the “organic” label that carry second generation chemicals from antibiotics, growth hormones and steroids, Rainbow Farms Fertilizer contains no fillers or hormones, nor any composition elements from bone or blood meal, chicken meal or bat guano. Our mealworm castings additionally, have 15 natural micronutrients to replenish your soil and stimulate growth: Nitrogen. Phosphorus, Potash, Potassium, Copper, Calcium, Zinc, Manganese, Iron, Boron, Sulfate, Sodium, Molybdenum, Bicarbonate. All natural, all organic.