10 Best Fertilizer For Tomatoes 2025 in the United States

The Burpee Organic Tomato & Vegetable Granular Plant Food is designed to deliver long-lasting nutrients to your tomato plants, with a special formula that releases essential nutrients immediately and sustains them for up to 3 months. This product is OMRI listed for organic use, ensuring it's suitable for those who prefer environmentally friendly gardening options.

Its composition includes an NPK ratio that's balanced for plant health, helping tomatoes grow strong and produce bountiful yields. Additionally, the granular form makes it easy to apply, and it's versatile enough to be used with a variety of other vegetables. However, it's important to note that the product's effectiveness can depend on the specific soil pH of your garden, so it might be necessary to adjust your soil conditions for optimal results.

The large 4-pound package might be more than what small-scale gardeners need. Burpee’s longstanding reputation makes it a trusted choice for those looking to enhance their tomato garden organically.

This 10-10-10 slow-release granular fertilizer offers a balanced mix of nitrogen, phosphorus, and potassium in equal amounts, which supports healthy tomato growth by promoting strong roots, lush leaves, and vibrant fruits. The slow-release formula provides nutrients steadily for up to eight weeks, meaning fewer applications are needed—a real time-saver for busy gardeners.

It's suitable for both outdoor and indoor plants and easy to apply with its fine granules that spread evenly and absorb well into the soil. This balanced NPK ratio makes it a versatile choice for general tomato feeding.

For those wanting an all-purpose fertilizer that supports healthy tomato plants without fuss, this product delivers consistent nutrition, though those seeking organic options or specific micronutrient boosts might want to consider alternatives.

FoxFarm Big Bloom is a liquid fertilizer designed primarily as a bloom booster, with a very low NPK ratio of 0.01-0.03-0.7, meaning it has minimal nitrogen and phosphorus but a moderate amount of potassium. For tomato plants, which often require balanced nutrients including nitrogen for leaf growth and phosphorus for root development, this fertilizer alone might not provide the full nutrient spectrum needed throughout the growing season. Its formula is organic-based, featuring earthworm castings and bat guano, which enriches the soil with natural micronutrients and beneficial microbes, supporting overall plant health. This can help improve root strength and enhance the flavor of tomatoes, a plus for gardeners aiming for tastier fruit.

The product is safe for both indoor and outdoor potted plants, easy to apply by mixing with water, making it user-friendly for beginners. However, it lacks a significant phosphorus content, which is important for young tomato plants to develop strong roots early on. Also, since it has a low nitrogen level, it might need to be supplemented with other fertilizers for leafy growth.

FoxFarm Big Bloom works well as a supplementary fertilizer to boost flowering and fruit quality in tomatoes but may require pairing with a more balanced fertilizer to cover the full nutritional needs of tomato plants, especially during early growth stages.