Comparison: Best Fish Emulsion With Kelp (Updated | Dec 1st)
If you’re looking to give your garden a natural boost, you’ve probably heard about fish emulsion with kelp—but which one actually delivers? We’ve all been there: standing in the gardening aisle, overwhelmed by bottles promising greener leaves and bigger blooms. After testing top contenders for nutrient balance, smell, ease of use, and real results in our own beds, we’ve narrowed it down. Discover the **best fish emulsion with kelp** that gardeners trust to nourish everything from tomatoes to roses—without the guesswork.
- Best for organic soil boost: GS Plant Foods Liquid Fish & Kelp Fertilizer (1 Gallon) – Organic Material Review Institute Listed Natural Plant Food for Home Gardens
- Best for compact kelp blend: EB Stone Fish Emulsion with Kelp
- Best for gallon green power: Organic Fish Emulsion with Kelp
- Best for fast acting growth: 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
- Best for deodorized 5-1-1: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for cold pressed yield: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for fulvic enhanced formula: Fish Emulsion with Kelp & Fulvic Acid
- Best for omri certified boost: Omri Listed Fish & Kelp Fertilizer for Plants by GS Plant Foods (36oz) – Organic Fertilizer for Vegetables
- Best for salmon nutrient pack: Fish Emulsion Fertilizer
- Best for deep green formula: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
Product Comparison: Best Fish Emulsion With Kelp
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.
EB Stone Fish Emulsion with Kelp, Quart Size
- All natural plant food to help plants grow, flower, fruit and stay deep green.
- This liquid fertilizer is concentrated and must be diluted before use.
- Derived from: Whole fish and Kelp.
- Quart size
Organic Fish Emulsion with Kelp, one Gallon Size
- All natural plant food to help plants grow, flower, fruit and stay deep green.
- This liquid fertilizer is concentrated and must be diluted before use.
- Derived from: Whole fish and Kelp.
- One Gallon Size
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
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!
Fish Emulsion with Kelp & Fulvic Acid
- Biologically Active Formula: Omega Genetix Fish Emulsion is an organic liquid fertilizer derived from hydrolyzed fish, kelp (Ascophyllum nodosum), and fulvic acid, delivering a complete range of macro (N, P, K) and micronutrients to support key physiological processes including vegetative growth and reproductive development.
- Enhanced Nutrient Profile: Supplies essential secondary nutrients (Mg, S, Ca, Fe) critical for chlorophyll synthesis, enzymatic function, and root system architecture, aiding in photosynthetic efficiency and cellular metabolism across growth stages.
- Soil Microbial Synergy: The fish hydrolysate component promotes rhizosphere microbial activity, accelerating organic matter decomposition and enhancing the bioavailability of nutrients, contributing to improved soil structure and nutrient cycling.
- Fulvic Acid Efficacy: Contains low molecular weight fulvic acid to facilitate chelation and transmembrane transport of nutrients, leading to improved root development, nutrient uptake efficiency, and enhanced plant biomass and vigor.
- Application & Safety: Fully compatible with conventional NPK programs and certified 100% organic for agricultural use; non-toxic to crops but should not be ingested or exposed to animals due to potential biological activity.
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.
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
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.
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 should I look for in a fish emulsion fertilizer?
Check the NPK ratio to match your plants’ growth stage, and verify that the product includes kelp or other seaweed for added micronutrients. Look for organic certifications like OMRI to ensure it meets organic standards. Also consider the concentration and recommended dilution rates to avoid over‑feeding.
How does a product with added fulvic acid differ from standard fish emulsion?
Fulvic acid improves nutrient chelation, helping plants absorb minerals more efficiently and promoting stronger root development. Products like Omega Genetix combine fish, kelp, and fulvic acid for a broader nutrient spectrum. This can result in faster growth and higher yields compared to plain fish‑kelp blends.
Is the odor from fish emulsion a concern for indoor gardening?
All fish emulsions have a natural fishy smell, but some brands, such as Down To Earth, note that the odor dissipates quickly after application. Deodorized options like Alaska Fish Emulsion use wintergreen to mask the scent. If you garden indoors, choose a low‑odor formula or apply it when you can ventilate the area.
Which product offers the best value for large garden beds?
GS Plant Foods Liquid Fish & Kelp (1 gallon) provides a high concentration that stretches far when diluted, making it cost‑effective for extensive beds. Its 2 oz per gallon recommendation covers many square feet per container. For even larger areas, the 5‑1‑1 Alaska Fish Emulsion also offers a generous volume at a competitive price.
How do the dilution rates compare across the different brands?
Most products suggest 2 oz of concentrate per gallon of water, like GS Plant Foods and Down To Earth, while others recommend ¼–½ cup per gallon, as seen with the Down To Earth formula. Smaller containers, such as the 8 oz Fish Emulsion, often use a tablespoon‑per‑gallon ratio. Always follow the label to ensure proper nutrient delivery and avoid plant stress.
Are there any benefits to choosing a product that is OMRI listed?
OMRI listed fertilizers, like the GS Plant Foods 36 oz fish & kelp blend, are approved for use in certified organic production, giving you confidence they meet strict organic standards. This can be important for growers who sell to organic markets or who want to avoid synthetic inputs. The listing also signals consistent quality and reliable performance.
Which fish emulsion is best for container plants and houseplants?
For containers and houseplants, a lower‑strength formula such as the Down To Earth concentrate (2–4 Tbsp per gallon) works well, providing gentle feeding without overwhelming roots. The 8 oz Fish Emulsion with clear usage instructions is also suitable for small spaces. Apply every 2–4 weeks during active growth for optimal results.
How important is the presence of kelp in these fertilizers?
Kelp adds essential trace minerals, hormones, and vitamins that boost plant vigor and stress tolerance. It also improves soil microbial activity, enhancing nutrient cycling. Products that combine fish hydrolysate with kelp, like most in this list, generally deliver more balanced nutrition than fish‑only blends.