Comparison: Best Horti Fish Emulsion Fertilizer (Updated | Dec 1st)

Look at the NPK ratio, because it tells you the balance of nitrogen, phosphorus, and potassium for your plant type. Check if the product is certified organic or OMRI‑listed if you follow organic standards. Consider concentration and package size—concentrates need dilution but can be more economical for large gardens. Finally, note odor control features, such as deodorized formulas or powder forms, if you’re sensitive to the fishy smell.

Higher nitrogen (e.g., 5‑1‑1) promotes leafy growth, making it ideal for vegetables, herbs, and fast‑growing annuals. A lower nitrogen, higher phosphorus ratio like 2‑4‑1 encourages root development and flower/fruit set, which benefits fruiting plants and blooming perennials. The 12‑2‑2 powder offers a strong nitrogen boost with extra potassium, useful for heavy feeders such as tomatoes or corn. Match the ratio to the growth stage you want to emphasize.

The Alaska Fish Emulsion 5‑1‑1 Concentrate sold in a 1‑gallon container typically provides the lowest cost per ounce, especially when diluted for extensive beds. The 1‑gallon organic fish emulsion from the “Organic Fish Emulsion Fertilizer” brand also offers good value with a 2‑3‑1 NPK ratio for frequent applications. For those preferring powder, the 3.3‑lb 12‑2‑2 formula stretches to about 300 gallons of feed, delivering excellent cost efficiency for big plots.

Traditional liquid emulsions can have a strong fishy scent, which some gardeners find unpleasant. Alaska’s 1‑gallon concentrate is deodorized with natural wintergreen, reducing the odor while retaining nutrients. The 12‑2‑2 powder eliminates most smell because it’s a dry, highly soluble form, making it ideal for indoor or greenhouse use.

If you are certified organic or want to ensure compliance with organic standards, choosing an OMRI‑listed product like the Alaska Fish Fertilizer 5‑1‑1 is advisable. OMRI certification confirms that the fertilizer meets the National Organic Program’s ingredient restrictions. Non‑listed products may still be organic, but they lack the official verification that some growers require.

Liquid emulsions, such as Central Garden Brands or the 1‑gallon Alaska concentrate, are ready to mix with water and apply quickly, which is convenient for regular feeding. Powder forms, like the 12‑2‑2 fish protein powder, have a longer shelf life, are easier to store, and produce far less odor, but require dissolving in water before use. Choose liquid for fast, frequent applications and powder when you need low‑odor, high‑volume feeding.

Formulas that list extra vitamins, amino acids, and beneficial microbes—such as Central Garden Brands—can boost plant metabolism and improve soil biology, leading to stronger roots and greener foliage. These additives help plants absorb nutrients more efficiently and can reduce the need for additional supplements. While not essential, they add a premium benefit for growers seeking vigorous, disease‑resistant plants.

Concentrates like the Alaska 1‑gallon 5‑1‑1 provide flexibility and lower cost per unit, but they require accurate dilution and proper storage. Ready‑to‑use bottles, such as the 8‑oz Complete Fish Emulsion, are convenient for beginners or small‑scale gardeners who prefer a pre‑mixed solution. Your choice depends on garden size, willingness to measure mixtures, and how often you plan to fertilize.