Best Organic Fertilizers

Looking for the best organic fertilizers to boost your garden’s health? We’ve curated a list of 10 top organic fertilizers to help your plants thrive naturally.

Growing a thriving garden starts with the right nutrients. Organic fertilizers are safe, eco-friendly, and packed with natural goodness for your plants. Whether you’re growing vegetables, flowers, or herbs, these products ensure healthy growth without harmful chemicals.

Choosing the best organic fertilizer can feel overwhelming, but we’ve done the work for you. This guide highlights top options, making it easy to find the perfect match for your garden. Get ready to see your plants flourish like never before!

List of Top 10 Organic Fertilizers

Title	Best For	Price
Down To Earth All Natural Fertilizers Organic Vegetable Garden – Plant Food for Vegetables, Herbs, Greens and Raised Beds 4-4-4, 5 lb	This fertilizer is perfect for gardeners who want to grow healthy vegetables and herbs in a safe, eco-friendly way. It’s easy to use and great for raised beds too.	View on Amazon (paid link)
Burpee Natural Purpose Granular 4-Lb Organic Food for Growing Strong Plants \| Good for Vegetable Garden, Flower Garden & Seed Starting, 4 lb, 4lb. Bag	This organic plant food is perfect for anyone who wants to grow strong, healthy plants. Whether you’re starting seeds, growing vegetables, or caring for flowers, this easy-to-use product will help your garden thrive.	View on Amazon (paid link)
Burpee Organic Tomato & Vegetable Granular Plant Food, 4 lb	This plant food is perfect for anyone who wants healthy, thriving tomatoes and vegetables. It’s easy to use and works for up to 3 months.	View on Amazon (paid link)
Miracle-Gro Organic All Purpose Plant Food – Garden Fertilizer for Outdoor Vegetables, Flowers, Container and In-Ground Plants, Feeds up to 3 Months, OMRI Listed, 3 lb.	This Miracle-Gro Organic Plant Food is perfect for anyone who loves growing outdoor plants. Whether you’re caring for vegetables, flowers, or potted plants, it’s easy to use and feeds for up to 3 months.	View on Amazon (paid link)
Miracle-Gro Organic Plant Food – Use with Indoor or Outdoor Plants, Organic Liquid Fertilizer for Containers and In-Ground Gardens, OMRI Listed, 32 fl. oz.	Miracle-Gro Organic Plant Food is perfect for anyone who loves plants, whether you have indoor houseplants, outdoor gardens, or both. It’s easy to use and works for all plant types, making it ideal for beginners and experienced gardeners alike.	View on Amazon (paid link)
Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag	Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer is perfect for gardeners who want healthier, tastier vegetables. It’s ideal for those seeking organic, natural solutions to grow abundant crops without chemicals.	View on Amazon (paid link)
Jobe’s Organics Granular Garden Fertilizer, Easy Plant Care Fertilizer for Vegetable Gardens and Tomato Plants, 4 lbs Bag	Jobe’s Organics Granular Garden Fertilizer is perfect for gardeners who want easy, organic care for their vegetable and tomato plants. It’s simple to use and keeps plants healthy without mess or waste.	View on Amazon (paid link)
Alaska Fish Fertilizer OMRI Listed 5-1-1, 115 oz	This fertilizer is perfect for gardeners who love natural, organic methods. It’s great for growing vegetables, fruits, and flowers safely and easily.	View on Amazon (paid link)
Neptune’s Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) – 36oz Bottle – Plant Food for Garden – Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns	Neptune’s Harvest Fish & Seaweed Liquid Fertilizer is perfect for anyone who wants healthy plants and a thriving garden. Whether you’re growing vegetables, flowers, or indoor plants, this organic fertilizer is easy to use and safe for kids and pets.	View on Amazon (paid link)
Espoma Organic Plant-Tone 5-3-3 Natural & Organic All Purpose Plant Food; 4 lb. Bag; Organic Fertilizer for All Flowers, Vegetables, Trees, and Shrubs. – Pack of 2	Espoma Organic Plant-Tone is perfect for anyone who wants to grow healthy plants naturally. It’s ideal for flowers, vegetables, trees, and shrubs, making it a great choice for all gardeners.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 organic fertilizers handpicked for healthy, thriving plants. Each product is expert-reviewed and customer-approved, ensuring quality and value. Find the perfect match for your garden and grow with confidence.

1. Down To Earth All Natural Fertilizers Organic Vegetable Garden – Plant Food for Vegetables, Herbs, Greens and Raised Beds 4-4-4, 5 lb

Down To Earth All Natural Fertilizers is safe for the environment. It’s non-toxic and pet-friendly. This plant food works well for vegetables, herbs, and greens.

The 5 lb box is easy to use. Just apply it directly to the soil or mix it into garden beds. Its slow-release formula gives long-lasting nutrients to your plants.

Made from all-natural ingredients, it’s chemical-free and eco-friendly. The 4-4-4 NPK ratio helps vegetables grow strong with healthy roots, leaves, and fruits.

Pros	Cons
Safe for pets, pollinators, and the ecosystem. Easy to use and apply directly to soil. Slow-release formula for long-lasting plant support. All-natural, chemical-free ingredients for healthy gardens. Balanced 4-4-4 NPK for strong vegetable growth.	Slow-release may not suit fast-growing plants needing quick nutrients. 5 lb box might be too small for large gardens. NPK ratio may not fit specific plant needs perfectly.

Perfect For:

This fertilizer is perfect for gardeners who want to grow healthy vegetables and herbs in a safe, eco-friendly way. It’s easy to use and great for raised beds too.

Ready to Purchase?

View Price on Amazon (paid link)

2. Burpee Natural Purpose Granular 4-Lb Organic Food for Growing Strong Plants | Good for Vegetable Garden, Flower Garden & Seed Starting, 4 lb, 4lb. Bag

Burpee Natural Purpose Granular is a 4-lb organic plant food designed to help your plants thrive. It’s perfect for vegetable gardens, flower gardens, and seed starting. The easy-to-apply granules release nutrients right away.

This OMRI-certified organic fertilizer works for vegetables, flowers, and herbs. It’s great for indoor and outdoor plants, promoting strong growth and vibrant blooms. Use it in containers or garden beds for fast, lasting results.

Trusted since 1876, Burpee delivers high-quality gardening products. This balanced mix keeps your soil and plants healthy for up to 3 months. Let’s grow together with Burpee’s natural solution!

Pros	Cons
Feeds plants for up to 3 months with essential nutrients. Safe, organic formula for vegetables, flowers, and herbs. Easy-to-apply granules for fast, visible results. Promotes growth in containers and garden beds. Trusted brand since 1876 for healthy plants.	Not instant results, takes time to see growth. May attract pests if overused. Granules can be messy to apply.

Perfect For:

This organic plant food is perfect for anyone who wants to grow strong, healthy plants. Whether you’re starting seeds, growing vegetables, or caring for flowers, this easy-to-use product will help your garden thrive.

Ready to Purchase?

View Price on Amazon (paid link)

3. Burpee Organic Tomato & Vegetable Granular Plant Food, 4 lb

Burpee Organic Tomato & Vegetable Granular Plant Food is a trusted choice for gardeners. It’s easy to use and delivers long-lasting results. Your plants will thrive with this organic formula.

The granules release nutrients right away and keep feeding for up to 3 months. This ensures your plants grow strong and healthy all season.

OMRI-listed for organic use, this plant food is safe and reliable. Burpee has been a gardening leader since 1876. Let’s grow together with this proven product!

Pros	Cons
Long-lasting results with easy-to-apply granules. Feeds plants for up to 3 months continuously. Organic and OMRI-listed for safe, trusted use. Generations of gardeners trust Burpee’s quality.	Not for quick results, slow release only. Limited size, 4 lb may not last long. No instant fix, patience needed for growth.

Perfect For:

This plant food is perfect for anyone who wants healthy, thriving tomatoes and vegetables. It’s easy to use and works for up to 3 months.

Ready to Purchase?

View Price on Amazon (paid link)

4. Miracle-Gro Organic All Purpose Plant Food – Garden Fertilizer for Outdoor Vegetables, Flowers, Container and In-Ground Plants, Feeds up to 3 Months, OMRI Listed, 3 lb.

Miracle-Gro Organic All Purpose Plant Food - Garden Fertilizer for Outdoor Vegetables, Flowers, Container and In-Ground Plants, Feeds up to 3 Months, OMRI Listed, 3 lb.

Miracle-Gro Organic All Purpose Plant Food is a garden fertilizer that helps outdoor plants grow strong and healthy. It works for vegetables, flowers, and potted plants alike.

Just shake and mix into the soil, then water to start feeding. It lasts up to 3 months and shows results in as little as 1 week.

Pros	Cons
Feeds plants for up to 3 months with one application. Grows healthier, stronger plants compared to unfed ones. Easy to apply—just shake, mix, and water. Safe for outdoor use on vegetables, flowers, and more.	Not for indoor plants, only outdoor use. Granules need mixing, can’t just sprinkle and go. Feeds up to 3 months, but results vary.

Perfect For:

This Miracle-Gro Organic Plant Food is perfect for anyone who loves growing outdoor plants. Whether you’re caring for vegetables, flowers, or potted plants, it’s easy to use and feeds for up to 3 months.

Ready to Purchase?

View Price on Amazon (paid link)

5. Miracle-Gro Organic Plant Food – Use with Indoor or Outdoor Plants, Organic Liquid Fertilizer for Containers and In-Ground Gardens, OMRI Listed, 32 fl. oz.

Miracle-Gro Organic Plant Food - Use with Indoor or Outdoor Plants, Organic Liquid Fertilizer for Containers and In-Ground Gardens, OMRI Listed, 32 fl. oz.

Miracle-Gro Organic Plant Food is made from plants for all plants. It’s perfect for indoor and outdoor use. This organic liquid fertilizer helps plants grow strong.

Use it for containers, gardens, or raised beds. It’s OMRI Listed, so it’s safe and trusted. Feeds plants instantly for better health.

One 32 fl. oz. bottle makes up to 10.75 gallons of plant food. Easy to apply by diluting with water.

Pros	Cons
Feeds plants instantly for healthier, more resilient growth. Made from plants, safe for all plant types. Easy to use, just dilute and apply. OMRI Listed, perfect for organic gardening. One bottle makes up to 10.75 gallons of plant food.	Needs frequent reapplication for best results. Must dilute before use, adding extra steps. Large quantity may expire before fully used.

Perfect For:

Miracle-Gro Organic Plant Food is perfect for anyone who loves plants, whether you have indoor houseplants, outdoor gardens, or both. It’s easy to use and works for all plant types, making it ideal for beginners and experienced gardeners alike.

Ready to Purchase?

View Price on Amazon (paid link)

6. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

Dr. Earth Organic 5 Fertilizer is perfect for growing tasty vegetables, herbs, and tomatoes. It’s 100% organic and feeds plants for months. This fertilizer boosts plant health and crop yield naturally.

It contains beneficial microbes and mycorrhizae for stronger, healthier plants. No GMOs, chemicals, or harmful additives are used, making it safe and effective.

Pros	Cons
Organic and natural ingredients for healthy plants. Feeds for months, saving time and effort. Boosts crop abundance and flavor naturally. No GMOs, no harmful additives, safe for all.	Price may be higher than non-organic options. Poly bag packaging isn’t eco-friendly. Long-term feeding may need extra applications.

Perfect For:

Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer is perfect for gardeners who want healthier, tastier vegetables. It’s ideal for those seeking organic, natural solutions to grow abundant crops without chemicals.

Ready to Purchase?

View Price on Amazon (paid link)

7. Jobe’s Organics Granular Garden Fertilizer, Easy Plant Care Fertilizer for Vegetable Gardens and Tomato Plants, 4 lbs Bag

Jobe’s Organics Granular Garden Fertilizer is perfect for vegetable gardens and tomato plants. It comes in a 4-pound bag and is designed to be easy to use.

This fertilizer has a 2-5-3 NPK formula to help plants grow strong. It’s OMRI listed and free of synthetic chemicals, making it safe for organic gardening.

Applying it is simple and mess-free. Use it every 4-6 weeks during the growing season for healthy, high-yield plants.

Pros	Cons
Organic, USDA-approved fertilizer for safe, healthy plant growth. No mess, no waste, no smell—easy application every time. Perfect NPK ratio (2-5-3) for high yields and vibrant foliage. Simple measuring prevents over-fertilizing, protecting your plants.	Frequent reapplication needed every 4-6 weeks during growing season. Limited quantity (4 lbs) may not last for large gardens. Granular form requires careful measurement to avoid waste.

Perfect For:

Jobe’s Organics Granular Garden Fertilizer is perfect for gardeners who want easy, organic care for their vegetable and tomato plants. It’s simple to use and keeps plants healthy without mess or waste.

Ready to Purchase?

View Price on Amazon (paid link)

8. Alaska Fish Fertilizer OMRI Listed 5-1-1, 115 oz

Alaska Fish Fertilizer is OMRI-certified for organic gardening. It’s made with fish, a trusted natural source of essential nutrients for healthy plant growth.

Use it every 3 weeks during the growing season. It’s safe for plants and easy to mix with water. Feeds all types of plants, from vegetables to roses.

Pros	Cons
Certified organic, trusted by natural gardeners everywhere. Fish-based formula provides essential nutrients for strong plants. Feeds all plants, from veggies to roses and trees. Safe for plants, won’t burn when used as directed. Easy to use, just mix with water for quick results.	Strong fishy smell may not be for everyone. Frequent application needed every 3 weeks for best results. Mixing required—not a ready-to-use solution.

Perfect For:

This fertilizer is perfect for gardeners who love natural, organic methods. It’s great for growing vegetables, fruits, and flowers safely and easily.

Ready to Purchase?

View Price on Amazon (paid link)

9. Neptune’s Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) – 36oz Bottle – Plant Food for Garden – Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns

Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns

Neptune’s Harvest Fish & Seaweed Liquid Fertilizer is a powerful plant food for all your gardening needs. It’s made with 75% fish and 25% seaweed, creating a perfect nutrient blend. Use it for indoor and outdoor plants.

This organic fertilizer boosts flavor in veggies and brightens flower colors. It’s safe for kids and pets, making it a family-friendly choice.

Easy to use, just mix with water and apply. It improves soil health over time, helping plants grow stronger and healthier. One 36oz bottle covers all your gardening needs.

Pros	Cons
Boosts plant growth with fish and seaweed blend. Safe for kids and pets, OMRI Listed organic formula. Improves soil health, retains moisture, and drains better. Easy to use, efficient, and fits all gardening routines.	Strong fishy smell may be off-putting to some users. Frequent applications needed for outdoor plants (every 1-2 weeks). Small bottle size may not last long for large gardens.

Perfect For:

Neptune’s Harvest Fish & Seaweed Liquid Fertilizer is perfect for anyone who wants healthy plants and a thriving garden. Whether you’re growing vegetables, flowers, or indoor plants, this organic fertilizer is easy to use and safe for kids and pets.

Ready to Purchase?

View Price on Amazon (paid link)

10. Espoma Organic Plant-Tone 5-3-3 Natural & Organic All Purpose Plant Food; 4 lb. Bag; Organic Fertilizer for All Flowers, Vegetables, Trees, and Shrubs. – Pack of 2

Espoma Organic Plant-Tone 5-3-3 Natural & Organic All Purpose Plant Food; 4 lb. Bag; Organic Fertilizer for All Flowers, Vegetables, Trees, and Shrubs. - Pack of 2

Espoma Organic Plant-Tone is a natural, all-purpose plant food perfect for flowers, vegetables, trees, and shrubs. It’s organic and safe, with no harmful ingredients.

This 5-3-3 fertilizer includes 5% calcium and Bio-tone formula, ensuring long-lasting nutrients for your plants. Use it spring and fall for trees and shrubs, and monthly for flowers and vegetables.

Easy to apply, no mixing needed, and approved for organic gardening. Espoma, trusted since 1929, delivers quality and experience.

Pros	Cons
Organic and safe for all plants, with no toxic ingredients. Long-lasting nutrients for healthy growth all season. Easy to use—no mixing required, just apply and water. Approved for organic gardening, trusted since 1929.	Slow-release nutrients may not suit plants needing quick results. Monthly application required for flowers and veggies—more work. 4 lb. bag might not last long for large gardens.

Perfect For:

Espoma Organic Plant-Tone is perfect for anyone who wants to grow healthy plants naturally. It’s ideal for flowers, vegetables, trees, and shrubs, making it a great choice for all gardeners.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Growing a thriving garden starts with the right nutrients. Organic fertilizers are safe, eco-friendly, and packed with natural goodness for your plants.

Choosing the best organic fertilizer can feel overwhelming, but we’ve made it easy. This guide highlights top options and key factors to help you find the perfect match for your garden.

Factors to Consider When Buying Organic Fertilizers

Plant Type:
Choose a fertilizer tailored to your plants, like vegetables, flowers, or herbs. Some products are all-purpose, while others are specific to certain plants.
NPK Ratio:
Check the NPK ratio (Nitrogen, Phosphorus, Potassium) to match your plants’ needs. For example, 4-4-4 is great for balanced growth.
Application Method:
Decide if you prefer granules, liquid, or powder. Granules are easy to spread, while liquids mix well with water for quick feeding.
Release Time:
Slow-release fertilizers feed plants over time, while fast-release gives quick results. Choose based on your garden’s needs.
Organic Certification:
Look for OMRI-listed or certified organic products to ensure they’re free from harmful chemicals.
Ease of Use:
Pick a fertilizer that’s simple to apply, whether it’s mixing with water or sprinkling directly on soil.
Longevity:
Some fertilizers feed plants for up to 3 months, reducing the need for frequent applications.
Safety:
Choose pet-friendly and non-toxic options if you have animals or kids around your garden.
Ingredients:
Opt for all-natural ingredients like fish, seaweed, or plant-based materials for a truly eco-friendly choice.
Brand Reputation:
Trust brands with a long history of quality, like Burpee or Miracle-Gro, for reliable results.

With these factors in mind, you’re ready to pick the best organic fertilizer for your garden. Watch your plants flourish like never before!