Comparison: Best Fish Emulsion For Flowering Plants (Updated | Dec 1st)
But with so many options on the shelf, how do you know which one delivers the best blooms? We’ve dug into the details, tested the top contenders, and compared their nutrient profiles, scent levels, and real-garden results. Whether you’re growing roses, petunias, or zinnias, the right fish emulsion can make all the difference—without harsh chemicals. Let’s find the best fit for your flourishing flower garden.
- Best for wintergreen deodorized fertilizer: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for high-yield soil drench: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for vitamin-rich organic boost: CENTRAL GARDEN BRANDS 100099247 Fish Emul Fertilizer
- Best for omri certified organic: Alaska Fish Fertilizer OMRI Listed 5-1-1
- Best for salmon nutrient boost: Fish Emulsion Fertilizer
- Best for deep green growth: Fertilome (10611) Fish Emulsion Fertilizer 5-1-1 (16 oz)
- Best for large-scale green boost: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Best for low-odor powder power: Fish Emulsion Fertilizer 12-2-2 Powder (3.3 pounds Powder-Up to 300 Gallons of Water)
- Best for fish-kelp soil boost: GS Plant Foods Liquid Fish & Kelp Fertilizer (1 Gallon) – Organic Material Review Institute Listed Natural Plant Food for Home Gardens
- Best for fast-acting vigor boost: 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 Fish Emulsion For Flowering Plants
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!
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
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 (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.
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 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
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.
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 N‑PK ratio should I look for in a fish emulsion if I want more flowers?
For blooming plants a higher phosphorus level helps, so a ratio around 2‑3‑1 or 12‑2‑2 is ideal. Products like the 1‑gallon organic fish emulsion (2‑3‑1) and the 12‑2‑2 powder are formulated for strong flower development. Choose a formula with at least 2 % phosphorus for consistent bloom performance.
How does a liquid fish emulsion compare to a powdered version for flowering beds?
Liquid emulsions are easy to mix and apply as a foliar spray or soil drench, giving quick nutrient uptake, while powders are less odorous and can be diluted to large volumes for big garden plots. The 12‑2‑2 powder makes up to 100 gal of feed, which is cost‑effective for extensive beds, whereas the 1‑gallon liquids are convenient for container gardening. Your choice depends on the size of the area and your tolerance for the typical fishy smell.
Is an OMRI‑listed fish emulsion important for organic gardeners?
Yes, OMRI certification confirms the product meets organic standards and can be used in certified organic production. Both Alaska Fish Fertilizer (5‑1‑1) and GS Plant Foods’ fish‑kelp blend carry OMRI listing, giving peace of mind for growers who follow strict organic guidelines. Non‑listed products may still be natural but lack the official verification.
Which fish emulsion has the mildest odor while still delivering strong results?
The Alaska Fish Emulsion (5‑1‑1) is deodorized with natural wintergreen, reducing the typical fishy smell. In contrast, the 1‑gallon organic fish emulsion advertises a strong fish aroma, indicating a very pure formulation. If odor is a concern for indoor or patio use, the wintergreen‑treated Alaska product is the better choice.
How do I determine the best size or concentration for my flower garden?
Calculate the total water volume you’ll apply per month and match it to the product’s dilution rate. For small containers, a 8 oz bottle (like the Complete Fish Emulsion) provides enough for frequent, low‑volume feeds, while the 12‑2‑2 powder or 1‑gallon liquids are more economical for larger beds needing up to 300 gal of solution. Higher concentration products reduce storage space but require careful measuring.
What extra benefits do fish‑kelp blends offer over pure fish emulsion?
Kelp adds trace minerals, hormones, and sea‑derived micronutrients that improve root development and stress tolerance. GS Plant Foods’ liquid fish‑kelp fertilizer and Down To Earth’s concentrate both combine these benefits, supporting healthier soil biology and potentially higher yields. Pure fish emulsions focus on nitrogen, phosphorus, and potassium, so the blend can give a more balanced nutrient profile.
How do I apply fish emulsion to maximize flower production?
Mix the recommended amount (usually 1‑2 Tbsp per gallon of water for plants) and apply as a soil drench every 2–4 weeks during the vegetative stage, then switch to a foliar spray at the onset of bud formation. Ensure the solution is evenly distributed around the root zone and avoid over‑watering, which can leach nutrients. Consistent feeding combined with good sunlight and proper pruning will encourage abundant blooms.