10 Best Tomato Fertilizers 2025 in the United States

Burpee Organic Tomato & Vegetable Granular Plant Food is a well-regarded choice for gardeners looking for an organic fertilizer. It comes in a 4-pound package and is easy to apply, providing long-lasting results by releasing nutrients over a period of up to 3 months. This makes it convenient for those who prefer not to fertilize frequently. The product is OMRI listed, ensuring it is suitable for organic gardening practices.

The fertilizer supports robust growth and healthy plants by supplying essential nutrients continuously throughout the growing season. It is well-suited for tomatoes and other vegetables, but may not be the best choice for those seeking a synthetic fertilizer with immediate, intense nutrient delivery. Burpee's long-standing reputation and commitment to quality make this a reliable option for organic gardeners aiming for superior yield and plant health.

The Miracle-Gro Water Soluble All Purpose Plant Food is a versatile fertilizer suitable for a variety of plants including flowers, vegetables, trees, shrubs, and houseplants. It contains essential nutrients that are designed to promote larger and more beautiful plants. The fertilizer can be used every one to two weeks, making it a frequent maintenance choice for gardeners. It's easy to use with either a watering can or the Miracle-Gro Garden Feeder, which makes application straightforward and convenient.

One key benefit is that it’s safe for all plants and won’t cause burning when used as directed, offering peace of mind to users. On the downside, the product is synthetic, which might not appeal to those preferring organic fertilizers. Additionally, as a water-soluble powder, it requires proper mixing with water before application. Users should also keep in mind that frequent applications may require more time and effort compared to slow-release fertilizers.

Its broad applicability makes it a strong choice for general gardening needs, though tomato-specific users might need to consider the NPK ratio more closely.

FoxFarm Big Bloom Plant Food is a versatile liquid fertilizer designed to enhance the growth and health of flowers, fruits, and vegetables, making it suitable for both indoor and outdoor potted plants. Its NPK ratio of 0.01-0.03-0.7 indicates a low concentration of nitrogen, phosphorus, and potassium, which is more suited for maintaining plant health rather than rapid growth spurts. This gentle formula is less likely to cause nutrient burn or over-fertilization, making it safe for regular use.

The organic nature of this fertilizer, featuring ingredients like earthworm castings and bat guano, means it supports sustainable gardening practices and avoids harmful chemicals. This is beneficial for the soil and ecosystem, particularly if you are an organic gardener. One of its strengths is the easy application process, where you simply mix the concentrate with water and apply it while watering your plants. This makes feeding your plants practically effortless and ensures they get consistent nutrients.

This product is particularly noted for its ability to strengthen roots, enhance flower fragrance, and boost the flavor of fruits and vegetables. However, one potential drawback is that its low NPK ratio may not be sufficient for plants that require a higher nutrient intake during peak growing seasons. Additionally, users who prefer synthetic fertilizers for their often quicker visible results might find this organic option slower in showing significant changes.