Comparison: Best Pennington Alaska Fish Fertilizer (Updated | Dec 1st)
If you’re looking to give your garden that lush, vibrant edge, you’ve probably heard about Pennington Alaska Fish Fertilizer. But with so many options out there, how do you know which one truly delivers? Whether you’re growing vegetables, flowers, or lush greenery, our honest breakdown will guide you to the right choice—because your garden deserves nothing less than the best.
- Best for omri certified 5-1-1: Alaska Fish Fertilizer OMRI Listed 5-1-1
- Best for wintergreen deodorized: Alaska Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Packaging may vary)
- Best for 11-vitamin boost: CENTRAL GARDEN BRANDS 100099247 Fish Emul Fertilizer
- Best for convenient 2-pack: Lilly Miller Alaska Fish Fertilizer 5-1-1 Concentrate 1 Quart (2-Pack)
- Best for bulk twin pack: ALASKA Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Тwо Расk)
- Best for six-pack value: Alaska 100545841 Fish Fertilizer 5-1-1 32 OZ (6 Pack)
- Best for deep green foliage: Fertilome (10612) Fish Emulsion Fertilizer 5-1-1 (32 oz)
- Best for fish & kelp power: GS Plant Foods Liquid Fish & Kelp Fertilizer (1 Gallon) – Organic Material Review Institute Listed Natural Plant Food for Home Gardens
- Best for sustainable 2-3-1: 1 Gallon Organic Fish Emulsion Fertilizer for Plants – Ideal Liquid Fish Fertilizer for Plants
- Best for odorless cold-process: Neptune’s Harvest Fish Fertilizer 2-4-1
Product Comparison: Best Pennington Alaska Fish Fertilizer
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
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
Lilly Miller Alaska Fish Fertilizer 5-1-1 Concentrate 1 Quart (2-Pack)
- 2 pack
ALASKA Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Тwо Расk)
- ALASKA Fish Emulsion Fertilizer 5-1-1 Concentrate 1 Gallon (Тwо Расk)
Alaska 100545841 Fish Fertilizer 5-1-1 32 OZ (6 Pack)
- 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 based fertilizer for use in vegetable and flower gardens OMRI listed Great for all indoor and outdoor plants.
- Fish has been used as a natural source of plant nutrients for centuries.
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.
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.
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!
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 factors should I consider when picking a fish fertilizer for my garden?
Look for the NPK ratio, OMRI certification, and the concentration level (ready‑to‑use vs. concentrate). A balanced ratio like 5‑1‑1 provides steady nitrogen for foliage while supporting root development. Also check packaging size and whether the product includes additional ingredients like kelp that can boost soil microbes.
How does the 5‑1‑1 NPK ratio compare to other ratios for vegetables and flowers?
A 5‑1‑1 ratio supplies more nitrogen, which promotes lush leafy growth ideal for vegetables and annuals. For flowering plants, a slightly lower nitrogen ratio (e.g., 2‑3‑1) can encourage blooms without excessive foliage. Choose the ratio that matches the primary growth stage of the plants you are feeding.
Is an OMRI‑listed fish fertilizer worth the higher price?
OMRI‑listed products are approved for organic certification, ensuring they meet strict standards for purity and sustainability. If you garden organically or sell produce as organic, the certification adds value and peace of mind. For conventional gardeners, the performance difference is often minimal, but the certification can still indicate a high‑quality formulation.
Should I buy a gallon‑size concentrate or a smaller ready‑to‑use quart?
Concentrates in gallon bottles, like the Alaska Fish Emulsion 5‑1‑1, usually offer a lower cost per ounce and let you customize dilution rates. Quart‑size ready‑to‑use options are convenient for occasional feeding and reduce the risk of over‑dilution. If you fertilize regularly, the larger size provides better value; if you only need occasional top‑ups, the smaller bottles are more practical.
Which fish fertilizer has the least odor for indoor plant use?
The Alaska Fish Emulsion that is deodorized with natural wintergreen is specifically formulated to reduce the typical fishy smell, making it suitable for indoor applications. Products that retain the full fish protein, like Neptune’s Harvest, tend to have a stronger odor. For indoor use, choose a deodorized or low‑odor formula to keep the air pleasant.
How does adding kelp or seaweed, as in GS Plant Foods Liquid Fish & Kelp, affect soil health compared to pure fish emulsion?
Kelp introduces trace minerals, hormones, and carbohydrates that stimulate beneficial soil microbes and improve nutrient uptake. When combined with fish hydrolysate, it creates a more balanced nutrient profile and can enhance root development. Pure fish emulsion provides excellent nitrogen and amino acids, but the kelp blend offers added vigor for long‑term soil fertility.
What is the safest way to apply fish fertilizer to avoid burning my plants?
Always dilute the fertilizer according to the label—typically 1‑2 tablespoons per gallon of water for most plants, and a stronger mix for trees. Apply the solution as a soil drench or foliar spray early in the morning or late afternoon when plants can absorb nutrients without heat stress. Testing the mixture on a small group of leaves first can help confirm that the concentration is safe.