10 Best Organic Tomato Fertilizers 2025 in the United States

Burpee Organic Tomato & Vegetable Granular Plant Food is designed to provide long-lasting nourishment for your garden. One of its strong points is the easy-to-apply granule form that releases essential nutrients immediately and continues to feed plants for up to three months. This extended feeding period reduces the need for frequent applications, which is convenient for busy gardeners.

The fertilizer is OMRI listed, ensuring it meets organic farming standards, which is a big plus for those committed to organic gardening practices. Additionally, Burpee's long-standing reputation in the gardening community adds a layer of trust and reliability.

In summary, Burpee Organic Tomato & Vegetable Granular Plant Food is a reliable and well-regarded choice for those looking to maintain their garden with minimal effort.

Neptune's Harvest Fish & Seaweed Fertilizer (2-3-1) is a great choice for gardeners looking to nourish their tomato plants organically. The NPK ratio (2-3-1) indicates it has a balanced mix of nitrogen, phosphorus, and potassium, essential for healthy plant growth. Being derived from fish and seaweed, it provides natural nutrients that promote vibrant flowers and foliage, as well as abundant and fragrant blooms.

The liquid form of this fertilizer makes it easy to mix and apply, whether you prefer to use it by hand, with a sprayer, or through a drip line system. This flexibility can make your gardening routine more convenient. However, you might need to apply it more frequently compared to some other fertilizers, so keep an eye on the application schedule. The fertilizer covers approximately 8,000 square feet, making it quite efficient for larger garden spaces.

Although it has a fishy odor typical of fish-based products, Neptune's Harvest Fish & Seaweed Fertilizer is worth considering if you want an organic, easy-to-use fertilizer that supports robust plant growth and beautiful blooms.

Jobe’s Organics Granular Garden Fertilizer is well-suited for vegetable and tomato plants, especially for users interested in organic gardening. The fertilizer has an NPK ratio of 2-5-3, which is formulated to support high yields and vibrant foliage. This ratio indicates a moderate amount of nitrogen, higher phosphorus for root development, and potassium to aid plant health. The fertilizer is organic and OMRI listed, ensuring it contains no synthetic chemicals, making it safe and environmentally friendly.

This product comes in granule form, which is easy to measure and apply without concerns of over-fertilizing. Application is required every 4-6 weeks, which is relatively low-maintenance. Additionally, it avoids wasteful runoff, mess, hazards, and smells, addressing common concerns with chemical fertilizers. However, the granule form may require some effort to spread evenly compared to liquid fertilizers.

Its medium coverage per 4-pound bag should be suitable for moderate-sized gardens. Users who prioritize organic growing and prefer granular fertilizers will benefit most from this product.