10 Best Organic Garden Fertilizers 2025 in the United States

The Miracle-Gro Shake 'N Feed All Purpose Plant Food is a versatile product suitable for a variety of plants, both in-ground and container-based. Its strength lies in its ability to feed plants for up to 3 months, which reduces the frequency of reapplication and ensures consistent nourishment. The inclusion of vital micronutrients helps in producing stronger and more vibrant plants, which is a major plus for any gardener aiming for a healthy garden.

This fertilizer contains natural ingredients, which is beneficial for those looking to maintain an organic garden, although it does not specify an organic certification. The granule form makes it easy to apply and work into the soil, ensuring that nutrients are efficiently absorbed by the plants. It is effective for flowers, vegetables, and herbs, making it a great all-purpose option.

Jobe’s Organics Granular Garden Fertilizer is designed specifically for vegetable gardens and tomato plants. It comes in a 16 lbs bag and features a 2-5-3 NPK ratio, which means it has a balanced mix of nitrogen, phosphorus, and potassium suitable for promoting plant growth, root development, and vibrant foliage. The fertilizer is OMRI listed, highlighting its compliance with organic gardening standards and absence of synthetic chemicals, making it an excellent choice for eco-conscious gardeners.

The grains ensure easy application with minimal waste, runoff, mess, hazards, or smells, enhancing user experience and garden health. Its medium coverage and granular form ease measurement and application, reducing the risk of over-fertilization. Users need to apply it every 4-6 weeks, aligning with most growing seasons to maintain optimum plant health.

The 15 lbs weight might be cumbersome for some users, and those with larger gardens might need multiple bags. The product dimensions make it relatively easy to store. This fertilizer is ideal for vegetable and tomato gardeners seeking effective, organic solutions to promote robust plant growth and improve soil condition without synthetic additives.

The FoxFarm Fertilizer Soil Trio, which includes Tiger Bloom, Grow Big, and Big Bloom, is designed to support robust plant growth and development. The trio provides a well-rounded nutrient profile suitable for various plants, with each product serving specific growth phases. Grow Big focuses on vegetative growth, Tiger Bloom aids in flowering and fruiting with its higher phosphorus content, and Big Bloom can be used consistently for plant health.

The inclusion of a Twin Canaries Conversion Chart is helpful for users to apply the correct amounts accurately. These liquid nutrients are easy to mix with water and apply, making them convenient for regular use. The trio is OMRI listed and CDFA certified, ensuring they meet organic standards, which is a significant advantage for organic gardening enthusiasts.

Users should be mindful of the N-P-K ratios and ensure they are suitable for their specific gardening needs. Some users might find the need to use multiple products a bit overwhelming compared to a single, all-purpose fertilizer. Additionally, being liquid, there’s a potential for spills or over-application if not handled properly. This product is best suited for gardeners looking for a comprehensive nutrient solution for various plant stages and those committed to organic gardening practices.