10 Best Fertilizers For Tomatoes 2025 in the United States

Burpee Organic Tomato & Vegetable Granular Plant Food is a solid choice for those looking to boost the growth of their tomatoes and other vegetables in an organic way. With its granular form, it is easy to apply and releases nutrients consistently over a period of up to 3 months, which means less frequent applications are needed. This can be particularly advantageous for busy gardeners. Its OMRI listing ensures that it meets organic standards, making it suitable for environmentally conscious users.

One possible drawback is the lack of specific information about the N-P-K ratio in the provided details, which is crucial for those wanting to tailor their fertilization to precise plant needs. Additionally, while it is designed to produce superior results throughout the season, the effectiveness can vary depending on the initial soil conditions and compatibility. Gardeners with highly specific soil pH requirements might need to conduct a soil test and adjust accordingly.

In summary, Burpee Organic Tomato & Vegetable Granular Plant Food is a long-lasting, easy-to-use fertilizer that is well suited for organic gardening, but users should ensure it meets their specific soil and nutrient needs.

The General Hydroponics Flora Grow, Bloom, Micro Combo Fertilizer is a versatile choice for tomato cultivation. With a liquid form and a 2-1-2 N-P-K ratio, it provides essential nutrients tailored to different growth stages. This synthetic fertilizer includes a complete range of primary, secondary, and micronutrients, which is beneficial for achieving enhanced yields and better crop quality. Additionally, the product is pH balanced, simplifying the maintenance of optimal soil conditions for tomato plants.

It is suitable for both hydroponic and soil cultivation, offering flexibility depending on your growing setup. The highly purified concentrates ensure maximum solubility, which can improve nutrient uptake by the plants. However, as a synthetic fertilizer, it may not appeal to those strictly seeking organic gardening solutions. The product comes in a substantial 1-gallon pack of three, which can be heavy for some users to handle.

This fertilizer is a good fit for both amateur and experienced gardeners looking to boost their tomato crop's flavor, nutrition, aroma, and essential oil content.

FoxFarm Grow Big Liquid Plant Food offers a liquid fertilizer with an N-P-K ratio of 6-4-4, emphasizing nitrogen to support leafy, vegetative growth—a crucial stage for tomato plants before they fruit. This makes it a good choice during the early growing phase of tomatoes to encourage strong stems and leaves. The fertilizer blends organic elements like earthworm castings and Norwegian kelp, providing beneficial micronutrients and nutrients without harsh chemicals, appealing to gardeners who prefer more natural options.

It’s easy to use by mixing with water and applying directly, which simplifies feeding both indoor and outdoor potted tomatoes as well as garden plants. Its lower phosphorus (P) and potassium (K) levels may not fully support flowering and fruit development phases, so additional bloom or fruit-specific fertilizers might be needed later.

This fertilizer is well suited for tomato growers looking for organic-based support for healthy plant growth, especially during the vegetative stage, though supplementation may be required to meet all tomato feeding needs throughout the entire growth cycle.