Best Natural Garden Fertilizers of 2026

The Down to Earth Organic Vegetable Garden Fertilizer is an all-natural, versatile mix that can help your vegetable plants grow throughout the season. Its 4-4-4 formula is perfect for your sprightly spring greens, summer tomatoes, and favorite fragrant herbs. This five-pound box of granules is full of powerful nutrition to give your plants a superpower. Use it in your backyard gardens and hobby farms for an excellent start to a bountiful harvest.

Burpee Natural Purpose Granular 4-Lb Organic Food is an all-purpose plant food that provides essential nutrients, calcium, and beneficial microbes to keep your plants healthy and growing all season long. It's perfect for vegetable gardens, flower gardens, herbs, trees, shrubs, and containers. The organic formula promotes plant growth, fruit production, and vibrant blooms, making it a natural fertilizer for your best garden.

The Down To Earth Organic Fertilizer is designed to support your vegetable garden with a balanced 4-4-4 nutrient ratio, helping your plants grow strong roots and produce plentiful vegetables. Since it’s made from all-natural ingredients, you can feel confident it’s safe and environmentally friendly. This fertilizer releases nutrients slowly, which means your plants get a steady supply without the risk of damage from overfeeding. Plus, the 1-pound size is just right for small to medium gardens, making it easy to apply and store without any hassle.

Down to Earth Vegetable Garden Fertilizer is an all-natural, versatile mix for backyard gardens and hobby farms. Its 4-4-4 formula is full of powerful nutrition that provides the ideal start for spring greens, boosts the growth of summer tomatoes, and is perfect for growing fragrant herbs. It can be used throughout the growing season to help plants thrive.

The Down To Earth Tomato Fertilizer offers a well-balanced mix of nitrogen, phosphorus, and potassium (4-6-2) that supports the growth of your tomatoes, peppers, and other vegetables. This means your plants get just the right nutrients to thrive. Being organic and OMRI listed, it’s perfect for gardeners who want to grow healthy food without chemicals. You’ll appreciate that it’s made from all-natural, sustainable materials, which helps keep your soil healthy over time. Plus, it’s easy to apply whether you’re using garden beds, raised beds, or containers, making it a convenient choice for any home gardener.

Smart Grower Liquid Fertilizer is a super concentrated plant food that makes up to 40 gallons of nutrient-rich solution with just a small amount per gallon of water. This means you can easily feed your indoor plants and help them grow bigger and healthier without hassle. It’s specially made for indoor and container plants, so whether you have houseplants, flowers, or vegetables, it supports strong growth and vibrant blooms. The formula is balanced with essential nutrients and beneficial microbes, which help your plants absorb nutrients better and keep the soil healthy. Plus, it doesn’t have a bad smell, making it pleasant to use indoors.

The Smart Grower Sea Kelp Fertilizer is a powerful organic plant food made from seaweed harvested in Maine. This fertilizer is packed with natural compounds that help your plants absorb nutrients more efficiently, promoting stronger growth. Its super-concentrated powder form means a small 2 oz bag can make up to 50 gallons of liquid fertilizer, giving you great value for both large and small gardens. Using this fertilizer regularly helps your plants develop healthier roots and better stress resistance, so you can enjoy bigger and more vibrant plants whether you're growing indoors, in vegetable beds, or hydroponic setups.

Burpee Organic Blood Meal Fertilizer is an OMRI listed starter fertilizer and natural source of nitrogen for green garden vegetables, colorful flower blooms, fruiting plants, and soil health. This 12-0-0 formulation supports plant growth and yield while also promoting soil microorganisms. Additionally, the product can serve as a natural repellent for garden critters such as deer, rabbits, and moles. Burpee guarantees the quality and success of all gardeners with their non-GMO, expertly-selected gardening supplies.

Miracle-Gro Shake 'N Feed Plant Food is a garden fertilizer that contains natural ingredients to feed microbes in the soil. It is specially formulated with micronutrients to help plants grow strong and produce more fruits and vegetables, and can feed up to 3 months. The calcium in the formula helps produce better quality and longer-lasting crops, while also preventing common disorders associated with calcium deficiency. The Shake 'N Feed Plant Food can be used in both ground and container gardens, and now contains natural ingredients that nourish above and below soil.

The Espoma Chicken Manure Fertilizer is a natural and organic option to nourish your flowers, vegetables, trees, and shrubs. It works well for various plants like annuals, perennials, roses, tomatoes, peppers, and more, making it versatile for your garden. The fertilizer contains pure chicken manure that is heat-treated and granulated, ensuring an easy and mess-free application without any harmful additives. You can use it in spring and fall for trees and shrubs, and apply it monthly to your flowers and vegetables during the growing season. Just spread it around the plant’s drip line and water it in — no mixing needed. This product is also approved for organic gardening, so it fits perfectly with eco-friendly practices.