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

Most fish emulsions have a 5-1-1 ratio, which provides a balanced source of nitrogen for leaf growth, plus phosphorus and potassium for root development and fruiting. A lower ratio like 2-3-1, found in some organic blends, is gentler and better for frequent, light applications. Choose the ratio that matches your plant’s growth stage and soil fertility needs.

Liquid emulsions are ready to dilute and apply, making them ideal for quick garden feedings, but they often retain a noticeable fishy smell. Powdered fish emulsion, such as the 12-2-2 formula, is dry, low‑odor, and highly concentrated, allowing you to mix large volumes of feed with less storage space. If odor is a concern, the powder may be the better choice, while liquids offer ease of use for small‑scale or indoor gardening.

Yes, an OMRI (Organic Materials Review Institute) listing confirms that the product meets strict organic standards, which is essential for certified organic gardens. Products like Alaska Fish Fertilizer OMRI Listed 5-1-1 are verified for use in organic production, while non‑listed items may still be natural but lack official certification. Choose an OMRI‑listed product if you need to maintain organic certification.

Generally, larger containers such as the 1‑gallon or 32‑ounce bottles provide a lower cost per ounce compared to 8‑oz or 250‑ml packages. For example, the 1‑gallon Alaska Fish Emulsion and Liquinox 5‑1‑1 give you more feed for your money than the 8‑oz salmon‑based blend. Compare the price per ounce and factor in your garden’s size to determine the most economical option.

All listed fish emulsions are labeled as non‑burning when diluted correctly, making them safe for indoor use. Follow the manufacturer’s mixing instructions—typically 1‑2 tablespoons per gallon of water for houseplants—to avoid excess nitrogen that could scorch leaves. Regular, light applications are better than occasional heavy feeds for indoor environments.

Yes, some formulations, like Liquinox 5‑1‑1, list iron, manganese, and zinc as part of the nutrient profile, which can boost chlorophyll production and overall plant vigor. While basic fish emulsions already contain trace minerals, added micronutrients can be beneficial for soil that is deficient in those elements. If your soil test shows low micronutrient levels, choose a product that explicitly includes them.

For extensive beds or vegetable rows, high‑volume options such as the 12‑2‑2 powder (making up to 100 gallons of feed) or the 1‑gallon liquid concentrates are efficient and cost‑effective. Container gardeners often prefer smaller bottles like the 8‑oz or 32‑oz quart sizes, which are easier to store and measure for limited soil volumes. Match the container size to the scale of your planting area to avoid waste.

Dilution rates vary: most 5‑1‑1 liquids recommend 1‑2 tablespoons per gallon of water for foliage plants, while the 12‑2‑2 powder suggests 1 lb per 100 gallons of water. Larger containers (e.g., 1‑gallon bottles) often come with a measuring cup for precise mixing. Always start with the lowest recommended concentration and increase gradually if plants show a positive response.