10 Best Organic Fertilizers 2025 in the United States

Miracle-Gro Water Soluble All Purpose Plant Food is a versatile, user-friendly fertilizer suitable for various plants, including indoor and outdoor plants, roses, flowers, houseplants, vegetables, and trees. With a significant 10 lb. container, it is designed to cover approximately 4,000 sq. ft. of garden area. This product claims to grow bigger, more beautiful plants compared to those unfed, thanks to its nutrient-rich formula that starts working instantly.

A notable strength is its easy application method; it can be used with a watering can or the Miracle-Gro Garden Feeder, making it convenient for both indoor and outdoor use. The mixing instructions are straightforward: 1/2 tsp per gallon of water for indoor plants and 1-1/2 tbsp per 1-1/2 gallon of water for outdoor plants. However, a potential drawback is that it might not be fully organic, which could be a concern for those strictly adhering to organic gardening.

Additionally, its water-soluble granules and powder form ensure quick nutrient release, which is beneficial for immediate plant needs but might require more frequent applications. It is important to consider its compatibility with your specific soil pH and the balance of nutrients it provides based on the specific needs of your garden.

Jobe’s Organics Granular All Purpose Fertilizer is a versatile option suitable for a wide range of plants, including vegetables, flowers, shrubs, and trees. Its balanced nutrient content with a 4-4-4 NPK ratio ensures that it provides essential nutrients uniformly, which is great for plant health and yields. This fertilizer stands out because it contains no synthetic chemicals and is OMRI listed, meaning it is certified for organic gardening by the USDA, making it an environmentally friendly option.

Another benefit is its ease of application; the granules can be applied every 2-3 weeks during the growing season, making it simple to maintain plant health without over-fertilizing. The 16 lbs bag ensures you have plenty to use across different plants and areas. However, there are a few considerations to keep in mind. The release rate of the nutrients might not be suitable for plants that require immediate feeding, as it may take time for the nutrients to fully integrate into the soil.

Additionally, while it is designed to avoid waste and mess, handling granular fertilizers can still be a bit cumbersome compared to liquid alternatives. Its compatibility with soil pH is generally good, but you might need to check if your specific soil conditions are ideal. If you're looking for a reliable, organic fertilizer that balances nutrients well and is easy to apply, Jobe’s Organics Granular All Purpose Fertilizer could be a solid choice.

Espoma Organic Plant-Tone 5-3-3 is a versatile organic fertilizer suitable for a wide range of plants including flowers, vegetables, trees, and shrubs. With a nutrient content of 5% nitrogen, 3% phosphorus, and 3% potassium (5-3-3), it provides a balanced nutrient mix that supports healthy plant growth. Its slow-release formula ensures a steady supply of nutrients over time, reducing the need for frequent reapplication. The inclusion of 5% calcium is beneficial for plant development, particularly in preventing common issues like blossom-end rot in tomatoes.

Plant-Tone is made from natural and organic ingredients, making it an environmentally safe choice without harmful sludges or toxic substances. Its compatibility with organic gardening practices allows it to be used without compromising organic certification standards. Application is straightforward: simply apply to the soil around the plant’s drip line and water thoroughly, with no mixing required. It's recommended to be used in the spring and fall for trees and shrubs, and monthly for flowers and vegetables during the growing season.

One potential downside is its granule form, which may require more effort to ensure even distribution compared to liquid fertilizers. The product comes in a convenient 4 lb. bag, and the pack of 2 provides good value for those with larger gardening needs.