Comparison: Best Emulsified Fish Fertilizer (Updated | Dec 1st)
If your garden’s looking a little under the weather, it might just be craving the right nourishment—and that’s where emulsified fish fertilizer shines. But with so many options on the shelf, how do you pick the best one? We’ve tested top contenders to bring you honest, real-world insights—because your garden deserves the best, and you deserve a choice you can feel good about.
- Best for vitamin-rich boost: CENTRAL GARDEN BRANDS 100099247 Fish Emul Fertilizer
- Best for omri certified blend: Alaska Fish Fertilizer OMRI Listed 5-1-1
- Best for wintergreen fresh: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for salmon power: Fish Emulsion Fertilizer
- Best for cold-pressed yield: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for deep green growth: Fertilome (10611) Fish Emulsion Fertilizer 5-1-1 (16 oz)
- Best for odorless ocean: Neptune’s Harvest Fish Fertilizer 2-4-1
- Best for powdered power: Fish Emulsion Fertilizer 12-2-2 Powder (3.3 pounds Powder-Up to 300 Gallons of Water)
- Best for seaweed boost: Neptune’s Harvest Fish & Seaweed Fertilizer 2-3-1 (36 Ounce)
- Best for compact odorless: Neptune’s Harvest Fish Fertilizer 2-4-1
Product Comparison: Best Emulsified Fish Fertilizer
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 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
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
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
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!
Fertilome (10611) Fish Emulsion Fertilizer 5-1-1 (16 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.
Neptune’s Harvest Fish Fertilizer 2-4-1, 36 Ounce
- Neptune’s Harvest is an organic fertilizer made from fresh north Atlantic fish
- It is made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones
- It also contains all the micro and macro nutrients naturally found in fish
- Unlike fish emulsions, Neptune’s Harvest retains the fish proteins and oils and has no unpleasant odor
Fish Emulsion Fertilizer 12-2-2 Powder (3.3 pounds Powder-Up to 300 Gallons of Water), for Vegetables, Trees, Lawns, Shrubs, Flowers, Fruits
- Organic Fish Protein :12-2-2 NPK powder made from 100% fish dried liquid powder, ground, and highly water-soluble when mixed.
- 2× Super Concentrated Powder: 1 lb (≈450 g) makes up to 100 gal of liquid feed,ideal for both large veggie plots and indoor/hydro gardens, creating high-value yield.
- Proven Results and Trusted Organic Fertilizer: Comparison experient conducted on same seed, same soil. The fertilizer supports visible growth and robust fruit set.
- Promotes Healthier Roots & Foliage: Rich in natural amino acids and micronutrients, boosts plant stress resistance, soil biology, and nutrient uptake.
- Reduced Odor, Easy to Use: Dry powder form alleviates the strong “fishy” smell of traditional emulsions. Simple to store, measure, and apply; mix and water every 1–2 weeks.
- Sustainable & Responsibly Sourced: Made in small batches from by products of the fish meal industry, organically biodegradable with minimal waste.
- Includes a teaspoon for ease of measurement
Neptune’s Harvest Fish & Seaweed Fertilizer 2-3-1 (36 Ounce)
- Grow a beautiful vegetable garden
- Flowers and foliage will be stronger and more colorful
- Blooms will be more plentiful, fragrant and longer lasting
- Easy to mix and apply by hand, sprayer, or drip line
Neptune’s Harvest Fish Fertilizer 2-4-1, 18 Ounce
- Neptune’s Harvest is an organic fertilizer made from fresh north Atlantic fish
- It is made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones
- It also contains all the micro and macro nutrients naturally found in fish
- Unlike fish emulsions, Neptune’s Harvest retains the fish proteins and oils and has no unpleasant odor
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 nutrients should I look for in a fish emulsion fertilizer?
Fish emulsions typically provide a balanced N-P-K ratio, often around 5-1-1 or 2-4-1, which supplies nitrogen for foliage, phosphorus for roots, and potassium for overall health. Look for additional vitamins, amino acids, and micronutrients that support soil microbes. Products that list a complete nutrient profile usually deliver more consistent growth.
How does the odor level affect my choice of fish fertilizer?
Traditional liquid emulsions can have a strong fishy smell, which some gardeners find unpleasant for indoor use. Powdered or deodorized formulas, like those with wintergreen scent, reduce odor while still delivering nutrients. If you plan to use the fertilizer near living spaces, consider low‑odor options.
Is there a benefit to choosing an OMRI‑listed fish fertilizer?
OMRI‑listed products are certified for organic gardening, meaning they meet strict standards for natural ingredients and sustainability. This certification can be important if you maintain an organic garden or need to comply with organic certification for produce. It also reassures you that the fertilizer won’t contain prohibited synthetic chemicals.
Should I buy a liquid concentrate or a powdered fish fertilizer?
Liquid concentrates are easy to mix and apply directly to soil or as a foliar spray, making them convenient for smaller gardens and indoor plants. Powdered forms have a longer shelf life, lower shipping weight, and often produce less odor, which is advantageous for larger plots or hydroponic systems. Your decision should depend on the size of your garden, storage space, and personal preference for handling.
How do I determine the right application rate for different plants?
Most manufacturers provide mixing guidelines, such as 1–2 tablespoons per gallon of water for foliage plants and up to 4 tablespoons per gallon for trees. Adjust the rate based on plant type, growth stage, and soil fertility; seedlings need milder doses, while mature fruiting plants can handle stronger applications. Regularly monitor plant response and reduce usage if you notice leaf burn or excessive growth.
What value does a larger container (e.g., 1‑gallon) offer compared to smaller bottles?
Buying in bulk usually reduces the cost per ounce and ensures you have enough product for a full growing season. Larger containers also minimize packaging waste and are ideal for gardeners with extensive beds or multiple containers. However, ensure you have proper storage conditions to keep the fertilizer from degrading over time.
Are there any extra benefits to fish fertilizers that include seaweed or other additives?
Formulations that combine fish emulsion with seaweed add natural hormones and trace minerals that can enhance root development and stress tolerance. These blends often improve soil structure and promote beneficial microbial activity. If you want an all‑in‑one boost for both nutrition and soil health, look for products that list seaweed or additional organic extracts.