Comparison: Best Using Fish Emulsion On Tomatoes (Updated | Dec 1st)
We’ve dug into the dirt (literally) to compare the best ways to apply fish emulsion for juicier fruits, stronger vines, and fewer pests. From timing to dilution ratios, we’ll break down what actually works—so you can skip the guesswork and watch your tomato plants thrive like never before.
- Best for deep green: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Best for wintergreen fresh: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for yield maximizer: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for trace mineral power: Harris Organic Plant and Lawn Fertilizer
- Best for compact complete: Fish Emulsion Fertilizer
- Best for versatile liquid: Fish Emulsion 16OZ CONC
- Best for low-odor powder: Fish Emulsion Fertilizer 12-2-2 Powder (3.3 pounds Powder-Up to 300 Gallons of Water)
- Best for certified nutrient boost: Safergro Aqua Power Certified Organic Fish Emulsion Concentrate
- Best for all-purpose liquid: Liquinox 7128 Fish Emulsion 5-1-1 Fertilizer
- Best for big batch boost: Fish Emulsion Fertilizer
Product Comparison: Best Using Fish Emulsion On Tomatoes
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.
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
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!
Harris Organic Plant and Lawn Fertilizer, Hydrolyzed Liquid Fish Fertilizer Emulsion Great for Tomatoes and Vegetables, 3-3-0.3, 32oz (32oz (Quart))
- Uses trace minerals and micronutrients naturally derived from fish
- Promotes vigorous growth of plants and vegetables
- Great for all indoor and outdoor plants
- For use in an Organic Gardening program
- Won’t burn plants
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
Fish Emulsion 16OZ CONC
- Total Nitrogen – 5% Available Phosphate – 1% Soluble Potash – 1%
- For use in Potted and house plants, fruits, vegetables, ornamentals and shade trees: african violets, ferns, tuberous begonias, camellias, azaleas, rhododendrons, acid-tolerant plants, fuchsias, chrysanthemums, orchids, vegetables, shrubs, berries, trees (fruit, shade, deciduous), roses, flowers (annual and perennial), and transplants * See label for complete list
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
Safergro Aqua Power Certified Organic Fish Emulsion Concentrate, 1 Quart
- OMRI certified organic liquid product
- Contains 20 amino acids, 13 vitamins and 8 minerals to promote health and growth
- 1 quart concentrate makes 6 to 10 gallons mix depending on application
- Feeds soil, plants and beneficial soil microbes
- To be used at any growth stage
Liquinox 7128 Fish Emulsion 5-1-1 Fertilizer, 1-Gallon
- All purpose liquid fish fertilizer: Use on flowers, lawns, shrubs, trees, and other outdoor plants
- Primary nutrients source: Derived from seagoing fish
- Active ingredients: Includes iron, manganese, and zinc
- Fish emulsion 5-1-1: Suitable for soil or foliar application
- Safe and nonburning: Ideal for use on vegetables, flowers, shrubs, lawns, and trees
- Versatile application: Can be used on potted and house plants, fruits, vegetables, ornamentals, and shade trees
- Application rate: Recommended usage is 2 tablespoons per gallon monthly during the growing and blooming season
- Product type: Liquid fertilizer
- Package size: Available in a 1-gallon container
- Manufacturer: Liquinox
Fish Emulsion Fertilizer, Complete Fish Emulsion Plant Food, 32 oz (1 Quart)
- Complete fish fertilizer for thriving plants
- Helps growth with natural harvest salmon nutrients
- Easy-to-follow care instructions included
- Made in the USA
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 N‑PK ratio should I look for when feeding tomatoes with fish emulsion?
Tomatoes benefit from a balanced nitrogen source with a slightly lower phosphorus level, so a 5‑1‑1 or 2‑3‑1 ratio works well. The 5‑1‑1 formulas (e.g., Fertilome, Liquinox, Alaska) provide quick‑green growth, while the 2‑3‑1 blend (Organic Fish Emulsion 1 gal) supplies more phosphorus for fruit set. Choose the ratio that matches your soil test results and growth stage.
How do liquid fish emulsions compare to powder forms in terms of convenience and odor?
Liquid emulsions are ready‑to‑mix, making them ideal for quick applications on containers or small beds, but they often retain a strong fishy smell. Powdered fish emulsion (e.g., the 12‑2‑2 powder) dissolves in water and usually has a reduced odor, plus it’s easier to store and measure for large gardens. If odor is a concern and you have a big plot, the powder may be the better choice.
Is an organic certification important when selecting a fish emulsion for edible crops?
Organic certification (such as OMRI) guarantees that the product meets strict standards for natural ingredients and no synthetic additives, which is valuable for organic growers and health‑conscious consumers. Products like Safergro Aqua Power and Harris Organic Plant and Lawn Fertilizer carry this certification. Non‑certified options still work, but they may contain undisclosed additives.
What concentration should I use for tomatoes versus trees or shrubs?
For tomatoes, most manufacturers recommend 1‑2 tablespoons of liquid emulsion per gallon of water, applying every 2‑3 weeks. Trees and larger shrubs often need a stronger mix, such as 4 tablespoons per gallon, to reach the extensive root system. Always start with the lower rate and observe plant response before increasing.
How does price per usable gallon differ among the listed fish emulsions?
A 1‑gallon concentrate like Alaska Fish Emulsion or Liquinox typically costs more per gallon than a 32‑oz bottle, but you get a larger volume for repeated applications. Powdered fish emulsion (12‑2‑2) can stretch a single pound to 100 gallons of feed, offering the lowest cost per usable gallon. Compare the total cost of the container with the recommended dilution rate to determine true value.
Can I use fish emulsion as a foliar spray for tomatoes, and does it affect fruit flavor?
Yes, many fish emulsions (e.g., the 2‑3‑1 organic liquid) are safe for foliar feeding and can boost nutrient uptake during fruit development. Because the nutrients are organic, they generally do not alter the taste of tomatoes, though excessive nitrogen can lead to overly vegetative growth at the expense of fruit size. Follow label directions and avoid high‑nitrogen applications late in the season.
What additional nutrients or benefits do some fish emulsions provide beyond N‑P‑K?
Several formulations include micronutrients like iron, manganese, zinc, and a suite of amino acids, vitamins, and trace minerals that support overall plant health. For example, Safergro Aqua Power lists 20 amino acids, 13 vitamins, and 8 minerals, while Harris emphasizes natural trace minerals. These extras can improve root development, disease resistance, and soil microbial activity.