Comparison: Best Organic Fish Emulsion For Plants (Updated | Dec 1st)
If your garden’s craving a natural boost, you’re probably considering fish emulsion—but with so many organic options out there, where do you start? We’ve dug into the murky waters so you don’t have to. From nutrient-rich formulas to easy-to-use blends, we’re comparing the top organic fish emulsions that actually deliver lush growth without harsh chemicals. Whether you’re growing tomatoes, herbs, or flowers, the right emulsion can make all the difference.
- Best for cold-pressed power: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for vitamin-rich boost: CENTRAL GARDEN BRANDS 100099247 Fish Emul Fertilizer
- Best for wintergreen deodorized: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for omri certified: Alaska Fish Fertilizer OMRI Listed 5-1-1
- Best for deep green foliage: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Best for usa-made concentrate: Fish Emulsion Fertilizer
- Best for fish kelp fusion: GS Plant Foods Liquid Fish & Kelp Fertilizer (1 Gallon) – Organic Material Review Institute Listed Natural Plant Food for Home Gardens
- Best for balanced 2-3-1: GS Plant Foods Liquid Fish Fertilizer – Organic Material Review Institute Listed (1 Gallon) – Natural Hydrolyzed Fish Fertilizer for Gardens
- Best for omega-3 rich: Bloom City Organic Wild Fish Fertilizer and Plant Supplement
- Best for fast-acting foliar: Down To Earth All Natural Fertilizers Organic Liquid Fish & Kelp Concentrate – Plant Food for Vegetable Gardens and Flower Beds – Makes up to 32 Gallons 2-4-1
Product Comparison: Best Organic Fish Emulsion For Plants
1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants, Flowers, Fruits & Vegetables, 2-3-1 NPK – Sustainably Sourced and Hydrolyzed for Steady Growth
- ORGANIC FISH EMULSION FERTILIZER – Our liquid fish fertilizer is made from sustainably sourced fish emulsion and we use up all the parts that would otherwise go to waste. Using an environmentally conscious method, ingredients are refined fresh and 100% cold pressed to help retain all of the nutrients, vitamins, and amino acids needed to grow healthy plants.
- GROW PLANTS NATURALLY – This wonderfully organic alternative to synthetic fertilizer contains a 2-3-1 NPK ratio perfect for light and frequent applications. Promotes steady, healthy plant development throughout the growing season.
- ENRICHES SOIL – Helps build a strong foundation for your organic garden to thrive on! Use as an effective soil drench to improve fertility, structure, and encourage the growth of beneficial microorganisms like fungi in your garden’s soil.
- PRODUCE MORE – Get the most out of your fertilizer and your garden! This organic garden fertilizer helps to increase crop yields and flower blooms. Gentle enough to use as a foliar spray makes this the perfect fish fertilizer for plants, flowers, and vegetables.
- SMELL THE DIFFERENCE – This fertilizer smells like fish because it’s made from fish! Crafted with high-quality concentrated and undiluted hydrolyzed fish emulsion each bottle gives off a pungent fishy aroma. When compared, we see it like this – if it doesn’t smell, then it’s not real fish!
CENTRAL GARDEN BRANDS 100099247 Fish Emul Fertilizer, 1 Quart
- Promotes healthy plant growth with 11 vitamins
- Can be used on all indoor and outdoor plants
- 100-percent organic
- Stimulates microorganisms
- Does not burn
Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Will Not Burn
- Great for all plants
- Deodorized with Natural Wintergreen
- 5-1-1 fertilizer is an excellent source of organic plant nutrients
- Fish Fertilizer
Alaska Fish Fertilizer OMRI Listed 5-1-1, 115 oz
- Fish-based fertilizer for use in vegetable, fruit, and flower gardens
- Excellent for use on flowers, trees, and other plants
- OMRI listed
- For organic gardening
- Great for all indoor and outdoor plants
- NPK 5-1-1 fish emulsion fertilizer
- Fish has been used as a natural source of plant nutrients for centuries
- Easy to use, just mix with water
Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Develops deep green foliage, vigorous root systems and a solid plant structure
- Derived from fish soluble, can be used from indoor and outdoor. Can be used on plants and trees.
- Mixes with water and can be used by any convenient method of application. Shake well before use.
- 5-1-1 Fertilizer contains 5% Nitrogen, 1% Phosphate and 1% Soluble Potash.
- For plants mix 1-2 tbsp per 1 gal of water. For trees mix 4 tbsp per gal of water.
Fish Emulsion Fertilizer, Complete Fish Emulsion Plant Food, 8 oz (250mL)
- Complete fish fertilizer for thriving plants
- Helps growth with natural harvest salmon nutrients
- Easy-to-follow care instructions included
- Made in the USA
GS Plant Foods Liquid Fish & Kelp Fertilizer (1 Gallon) – Organic Material Review Institute Listed Natural Plant Food for Home Gardens, Lawns, and Vegetables
- ORGANIC MATERIALS REVIEW INSTITUTE LISTED FOR TRUSTED GARDEN CARE Certified by OMRI for use in organic growing, GS Plant Foods Liquid Fish & Kelp Fertilizer delivers reliable, natural nutrition for vegetables, lawns, flowers, and shrubs.
- SEA-AND-SOIL BASED NUTRITION Made from North Atlantic seaweed (Ascophyllum nodosum) and fresh fish hydrolysate, this liquid concentrate provides essential nutrients and trace minerals that help support healthy soil and plant development.
- IMPROVES SOIL MICROBIOLOGY & NUTRIENT UPTAKE Supports a thriving soil ecosystem that promotes strong root systems and efficient nutrient absorption — the foundation for resilient, productive plants.
- EASY-TO-USE CONCENTRATE FOR ALL PLANTS Mix 2 oz per gallon of water and apply as a foliar spray or soil drench every 2–4 weeks. Safe for use on vegetables, fruits, ornamentals, turf, and houseplants.
- MADE IN THE USA – SUSTAINABLY PRODUCED Proudly produced by GS Plant Foods as a licensed fertilizer manufacturer. No synthetic chemicals, additives, or fillers — just natural ingredients formulated for healthy home gardens and hobby farms.
GS Plant Foods Liquid Fish Fertilizer – Organic Material Review Institute Listed (1 Gallon) – Natural Hydrolyzed Fish Fertilizer for Gardens, Lawns & Container Growing
- Organic Materials Review Institute Listed for Organic Production Approved as GS Plant Foods Organic Liquid Fish Concentrate 2-3-1. Suitable for organic growing under OMRI and NOP standards.
- Balanced Nutrient Formula (2-3-1) Provides primary nutrients from hydrolyzed fish for sustained plant nutrition and soil health.
- Versatile Garden Use: Ideal for vegetables, lawns, flowers, shrubs, trees, fruit, and container plants when used as directed.
- Simple Application: Mix 4 oz per gallon of water for most uses. Apply generously to soil or as a foliar feed until leaves are wet.
- Florida Licensed Manufacturer: Produced by GS Plant Foods, LLC (License F003717). 1 Gallon liquid fertilizer (8.9 lb).
Bloom City Organic Wild Fish Fertilizer and Plant Supplement, Great for Roots and Soil, Made from Sustainable Salmon, 1/2 Pint (8 oz)
- FROM SUSTAINABLE ALASKAN SALMON: Great for Soil and Plants, for indoor and outdoor use.
- CONTAINS SALMON EMULSION AND SALMON OIL: Very high in omega 3 Fatty Acids for Plants. More Amino Acids than any other brand.
- SMELLS LIKE FISH: You know this is the good stuff, because is really really smells like ocean and fish.
- HIGHEST QUALITY, MOST POTENT, BEST VALUE, BIGGEST YIELD: Bloom City’s ingredients are better for plants, better for you, and better for the planet. Simply the best choice for the conscientious grower.
- FORMULATED AND MADE IN THE USA: Designed by botanists and plant chemists in Seattle, Washington. Bloom City chooses only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems.
Down To Earth All Natural Fertilizers Organic Liquid Fish & Kelp Concentrate – Plant Food for Vegetable Gardens and Flower Beds – Makes up to 32 Gallons 2-4-1, 32 oz
- Fast‑acting liquid formula: Perfect for foliar feed or soil drench applications, supporting quick absorption and growth stimulation.
- Stimulates overall plant vigor: High phosphorus aids flowering and fruiting, while nitrogen supports lush foliage and root development.
- Organic & soil‑friendly: Helps promote beneficial microbial activity and sustainable soil health due to its fish and kelp base
- Versatile application rates: For general garden use: ¼–½ cup per gallon of water; for containers: 2–4 Tbsp per gallon; for houseplants: 2 Tbsp per gallon, repeated every 2–4 weeks depending on growth stage
- Watch out for odor: While extremely effective, many users report a strong fish-like odor characteristic of fish emulsions—though it typically subsides quickly and doesn’t linger long indoors
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What key factors should I consider when choosing an organic fish emulsion fertilizer?
Look at the NPK ratio, as it indicates the balance of nitrogen, phosphorus, and potassium for your plants. Check whether the product is OMRI‑listed or certified organic, which assures compliance with organic standards. Also consider the concentration (e.g., 5‑1‑1 vs 2‑3‑1) and any added ingredients like kelp or salmon oil that can boost micronutrients.
How does the 2‑3‑1 ratio of the 1‑gallon Organic Fish Emulsion compare to the 5‑1‑1 formulas from other brands?
A 2‑3‑1 ratio provides relatively more phosphorus, which encourages strong root and flower development, making it ideal for blooming plants. The 5‑1‑1 formulas deliver higher nitrogen for rapid leaf growth, which is better for vegetative stages or leafy crops. Choose the ratio that matches the growth phase of your garden.
Is the strong fishy odor a sign of quality, and should I avoid products that smell less?
Yes, a noticeable fish smell usually indicates that the fertilizer contains real, undiluted fish emulsion rather than synthetic additives. Brands that claim to be “deodorized” may still be effective, but the scent is a reliable indicator of authentic fish content. If odor is a concern for indoor use, look for products that are labeled as low‑odor or deodorized.
Which product offers the best value for large‑scale garden use?
The 1‑gallon Organic Fish Emulsion (2‑3‑1) provides a high volume at a competitive price and can be used as both a soil drench and foliar spray, reducing the need for multiple products. For growers who need more nitrogen, the Alaska Fish Emulsion 5‑1‑1 gallon also offers a large container but may be slightly pricier per ounce. Compare the cost per ounce and the recommended application rates to determine which gives you the most feed for your money.
Can I safely use fish emulsion on both indoor houseplants and outdoor vegetable gardens?
Absolutely; most organic fish emulsions are labeled safe for indoor and outdoor use, provided you follow dilution instructions. Indoor growers may prefer low‑odor or deodorized formulas to minimize scent, while outdoor gardeners can take advantage of the stronger-smelling versions for maximum nutrient delivery. Always test a small batch on a few plants first to ensure there is no leaf burn.
What are the benefits of adding kelp to a fish emulsion fertilizer?
Kelp contributes trace minerals, hormones, and natural cytokinins that enhance root development and stress tolerance. When combined with fish emulsion, it creates a balanced nutrient profile that supports both foliage growth and fruiting. Products like GS Plant Foods Liquid Fish & Kelp blend these benefits into a single, easy‑to‑apply concentrate.
How do I determine the correct dilution rate for different plant types?
Read the label for the manufacturer’s recommended mix ratio; most fish emulsions suggest 1‑2 tablespoons per gallon of water for leafy vegetables and 4 tablespoons per gallon for trees or shrubs. Adjust the concentration downward for seedlings or delicate indoor plants to avoid leaf scorch. Consistent applications every 2‑4 weeks typically yield the best results.
Is there a noticeable performance difference between deodorized and non‑deodorized fish emulsions?
Deodorized emulsions, such as the Alaska Fish Emulsion with natural wintergreen, still provide the same macro‑nutrient profile but may have a milder scent, making them more pleasant for indoor environments. Non‑deodorized versions often retain a stronger fish aroma, which some growers interpret as a sign of higher fish protein content. Performance-wise, both can be equally effective if applied at the correct dilution.