Comparison: Best Fish Fertilizer Strawberries (Updated | Dec 1st)
If you’re growing strawberries and want them sweet, plump, and bursting with flavor, you might be wondering: does fish fertilizer really make a difference? From odor concerns to nutrient content, we tested top picks side by side so you don’t have to guess. Spoiler: not all fish fertilizers are created equal. Find out which ones deliver lush growth and juicy berries—without breaking the bank or stinking up your garden.
16oz Strawberry Fertilizer – Makes 16 Gallons of Fruit Tree Fertilizer for Strawberries
Strawberry Superboost
- Best for omri certified: Alaska Fish Fertilizer OMRI Listed 5-1-1
- Best for vitamin-rich blend: CENTRAL GARDEN BRANDS 100099247 Fish Emul 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 strawberry superboost: 16oz Strawberry Fertilizer – Makes 16 Gallons of Fruit Tree Fertilizer for Strawberries
- Best for wintergreen deodorized: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for root‑boost formula: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Best for cold‑pressed purity: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for seaweed power: Omri Listed Fish & Kelp Fertilizer for Plants by GS Plant Foods (36oz) – Organic Fertilizer for Vegetables
- Best for odorless formula: Neptune’s Harvest Fish Fertilizer 2-4-1
- Best for odorless concentrate: Neptune’s Harvest Fish Fertilizer 2-4-1
Product Comparison: Best Fish Fertilizer Strawberries
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
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
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.
16oz Strawberry Fertilizer – Makes 16 Gallons of Fruit Tree Fertilizer for Strawberries, Liquid Plant Food Outdoor, Ideal Strawberry Plant Food for Lush Growth & Bigger, Sweeter Strawberries
- 2X MORE VALUE: The 16 oz Strawberry Plant Fertilizer makes 16 gallons of instant plant food, while the bigger size 32 oz bottle makes 32 gallons, providing lasting care for your strawberry garden.
- BOOSTS GROWTH & FRUIT: Packed with essential nutrients, this berry fertilizer promotes bigger, sweeter berries, strong roots, and vibrant leaves for thriving strawberry plants season after season.
- POWERFUL FORMULA: With essential macronutrients & micronutrients like calcium, magnesium & zinc, HiThrive fertilizer for fruit trees nourishes your plants to improve berry size, flavor & resilience.
- FIXES NUTRIENT DEFICIENCIES: Struggling with slow growth or small fruit? Strawberry Fruit Fertilizer reverses nutrient deficiencies and encourages steady growth and abundant harvests.
- FOR ALL STRAWBERRIES: Ideal for Albion, Chandler, Seascape, Ozark Beauty, Jewel, Eversweet & more, HiThrive fertilizer for strawberry plants provides the ideal nutrition for all strawberry types.
- EASY TO USE: Mix our fertilizer fruit trees with water & apply! Use HiThrive every 1-2 weeks during the growing season & every 4 weeks during cooler months to keep your plants healthy and productive.
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
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.
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!
Omri Listed Fish & Kelp Fertilizer for Plants by GS Plant Foods (36oz) – Organic Fertilizer for Vegetables, Trees, Lawns, Shrubs, Flowers, Seeds & Plants – Hydrolyzed Fish and Seaweed Blend
- OMRI ORGANIC LISTED FISH AND SEAWEED BLEND: GS Plant Foods all-natural liquid fish is a high quality organic product that gives excellent plant growth, rebuilds soil, and offers higher production yields. Kelp is often applied to any type of plants, trees, lawns, flowers, vegetables and seeds without concern for harmful runoff.
- OPTIMAL PLANT GROWTH & HEALTH AT HOME OR COMMERCIALLY: Used in low concentrations, liquid seaweed fertilizer acts as an efficacious growth promoter. GS Plant Foods fish seaweed fertilizer is used extensively on a commercial basis, as well as at home for gardeners as an organic soil conditioner. This fish fertilizer for vegetables will lead to healthier crop yields and general plant well being.
- EASY TO APPLY FOR NATURAL GREAT RESULTS: Apply liquid fish & kelp fertilizer to improve specific growth stages. For House Plants; use 1 tablespoon per gallon of water. Feed every two weeks and do not over water. For Outdoor Plants; Use 2 fl. Oz per gallon of water. Feed vegetables, flowers, trees and shrubs every 2-3 weeks. Apply until soil is saturated or as a foliar feed until leaves are wet, top and bottom. For Lawns; use 2 to 4 oz concentrate per gallon of water to cover 1,000 sq. ft.
- TRUSTED & RELIABLE: At GS Plant Foods, we understand that you are placing your trust in us to provide you with the highest quality products available. We have 100% confidence in the quality of our products and continuously strive to deliver the best customer experience. Our products are organic, easy to use, cost efficient, sustainable, and yield consistent & amazing results in your garden, no matter what you’re growing or what medium in which your plants are growing.
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
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
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
Which fish fertilizer has the best N‑PK ratio for strawberry plants?
Strawberries thrive on a balanced low‑phosphorus formula; a 2‑3‑1 or 5‑1‑1 ratio provides ample nitrogen for leaf growth while keeping phosphorus modest. Products like the 1‑Gallon Organic Fish Emulsion (2‑3‑1) and Alaska Fish Emulsion (5‑1‑1) both meet this need. Choose the 2‑3‑1 option if you prefer a slightly lighter nitrogen boost for early‑season foliage.
Do I need a fertilizer that includes kelp for strawberries?
Kelp adds trace minerals and hormones that improve root development and fruit set, which can be beneficial for strawberries. The GS Plant Foods Liquid Fish & Kelp Fertilizer and the 36 oz Fish & Kelp blend both supply this extra benefit. If you want a single‑ingredient product, pure fish emulsion works, but kelp blends often give a modest yield increase.
How important is OMRI listing when choosing a fertilizer for organic gardening?
An OMRI listing confirms the product meets strict organic standards, making it safe for certified organic farms and home gardens. Alaska Fish Fertilizer, GS Plant Foods Liquid Fish & Kelp, and the 36 oz Fish & Kelp blend all carry OMRI certification. Selecting an OMRI‑listed product ensures compliance with organic regulations and reduces risk of synthetic residues.
Which product offers the best value per gallon of mixed fertilizer for a strawberry patch?
The HiThrive Strawberry Fertilizer (16 oz) produces 16 gallons of feed, giving a cost‑per‑gallon advantage over many liquid concentrates. In contrast, the 1‑gallon fish emulsion bottles produce only one gallon of solution, but they are often cheaper per ounce. For large strawberry beds, the HiThrive formula provides the most economical coverage.
Can I use the same fish fertilizer for both strawberries and other garden plants?
Yes, most fish emulsions are versatile and safe for vegetables, flowers, and trees. Products such as Central Garden Brands Fish Emulsion and Fertilome 5‑1‑1 are labeled for indoor and outdoor use across plant types. Just follow the recommended dilution rates for each crop to avoid over‑feeding.
What should I look for regarding odor when buying fish fertilizer?
Traditional fish emulsions can have a strong smell, which some gardeners find off‑putting. Neptune’s Harvest uses a cold‑process that retains nutrients while minimizing odor, and the 1‑Gallon Organic Fish Emulsion notes a pungent but natural fish scent. If odor is a concern, choose a low‑odor brand like Neptune’s Harvest or a deodorized option such as Alaska Fish Emulsion.
How often should I apply fish fertilizer to strawberry plants?
Strawberries benefit from regular, light applications every 2–4 weeks during the growing season. Dilute the fertilizer according to label instructions—typically 1–2 tbsp per gallon of water for soil drenching. Consistent feeding supports steady leaf growth and promotes larger, sweeter berries.
Is there a difference in performance between liquid concentrates and ready‑to‑use emulsions?
Liquid concentrates like GS Plant Foods Fish & Kelp require mixing before use, allowing you to adjust strength for different plant stages. Ready‑to‑use emulsions such as Alaska Fish Fertilizer are pre‑diluted, offering convenience but less flexibility. Choose a concentrate if you want precise control over nutrient levels; choose an emulsion for quick, hassle‑free feeding.