10 Best Organic Plant Fertilizers 2026 in the United States

Fox Farm Big Bloom Liquid Plant Food is an organic fertilizer designed primarily to support flowering and fruiting plants through all growth stages. Its very low NPK ratio (0-0.5-0.7) means it provides minimal nitrogen but a modest amount of phosphorus and potassium, nutrients important for blooms and fruit development. The fertilizer’s natural nutrient sources, including earthworm castings and bat guano, supply beneficial micronutrients and organic matter that improve soil health.

The FoxFarm Soil Liquid Trio Pack offers a well-rounded set of liquid fertilizers designed to support plants from early growth to flowering and fruiting. It includes Big Bloom for overall growth support, Grow Big for encouraging vigorous plant development, and Tiger Bloom which focuses on bud and fruit production. The N-P-K ratios vary across these products, providing balanced nutrition tailored to different growth phases. These fertilizers deliver nutrients in liquid form, allowing plants to absorb them quickly, which is helpful if you want faster effects compared to slow-release powders or pellets.

Miracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable Plant Food is designed specifically for growing tomatoes, fruits, and vegetables, both in the ground and in containers. Its nutrient ratio of 10-5-15 (Nitrogen-Phosphorus-Potassium) indicates a higher potassium content, which supports fruit development and overall plant health. The fertilizer also includes calcium, which helps strengthen plant cell walls and can lead to better quality and longer-lasting produce.