If you’re looking to give your plants a natural, nutrient-packed boost, fish emulsion is a time-tested choice that gardeners swear by. This liquid fertilizer, derived from fish byproducts, delivers essential nutrients that promote vigorous growth, strong roots, and lush foliage—without the harsh chemicals found in synthetic alternatives.
In this guide, we’ve rounded up and reviewed the top fish emulsion products on the market, from concentrated formulas for small indoor setups to bulk gallons for sprawling vegetable patches. Whether you’re a seasoned green thumb or just starting your gardening journey, this comparison will help you pick the perfect fish emulsion to meet your plants’ needs.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED “AS IS” AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Fish Emulsion Fertilizer – Liquid Salmon Supplement for Plants, 8 oz
Best forSmall indoor gardens
- Concentrated 8 oz size
- Supports strong root growth
ConsiderSmall bottle for large gardens
Organic Fish Fertilizer for Vegetable Garden, Fruits, and Flowers, 1 Gallon
Best forOrganic vegetable patches
- Sustainably sourced ingredients
- Improves soil structure
ConsiderMild fishy odor
Bloom City Organic Wild Fish Fertilizer for Vigorous Plant Growth, 8 oz
Best forHigh-yield outdoor gardens
- High omega-3 content
- Potent and concentrated
ConsiderStrong fishy odor
Fertilome (10612) Fish Emulsion Fertilizer 5-1-1, 32 oz
Best forLeafy green vegetables
- High nitrogen for foliage
- Versatile application methods
ConsiderRequires shaking before use
Fish Emulsion Fertilizer – Liquid Salmon Supplement for Plants, 32 oz
Best forMedium container gardens
- Generous 32 oz size
- Enhances crop yields
ConsiderFishy smell
Fish Emulsion Fertilizer – Liquid Salmon Supplement for Plants, 1 Gallon
Best forLarge vegetable gardens
- Bulk gallon size
- Cost-effective for big gardens
ConsiderStrong odor
Bloom City Organic Wild Fish Fertilizer for Vigorous Plant Growth, 32 oz
Best forVersatile indoor and outdoor use
- Wild fish nutrients
- Supports soil health
ConsiderMild fishy smell
Fertilome (10614) Fish Emulsion Fertilizer 5-1-1, 1 gal
Best forLarge mixed plantings
- Bulk gallon size
- High nitrogen content
ConsiderRequires shaking
Bloom City Organic Wild Fish Fertilizer for Vigorous Plant Growth, 1 Gal
Best forMaximum yield enthusiasts
- Premium Alaskan salmon
- High omega-3 and amino acids
ConsiderVery strong odor
Emulsión de Escocia Cod Liver Oil with Vitamins A, D, E, B1 – Natural Cherr…
Best forHuman health supplementation
- Supports immune and heart health
- Pleasant cherry flavor
ConsiderNot for plants
TPS Nutrients Fish Emulsion – Compact Boost for Indoor Plants
Brand: TPS NUTRIENTS
A compact, effective fish emulsion for indoor plant enthusiasts.
This 8-ounce bottle from TPS Nutrients is a concentrated liquid salmon supplement designed to supercharge root development and foliage growth. The formula is rich in essential nutrients that support consistent plant health, making it a great pick for indoor gardeners who need a small, easy-to-store option. Its compact size means you can keep it on a shelf or in a cabinet without taking up much room, yet it still packs enough punch for several applications.
You’ll appreciate how versatile it is—whether you’re nurturing houseplants, herbs on a windowsill, or a small container garden, this fish emulsion delivers the nutrients your plants crave. Made in the USA, it’s a reliable choice for those who want a straightforward, effective fertilizer without any complicated mixing ratios. Just dilute as directed and watch your plants respond with vibrant growth.
- Concentrated 8 oz size
- Supports strong root growth
- Made in USA
- Small bottle for large gardens
- Requires frequent reapplication
The Grow Co Organic Fish Fertilizer – Sustainable Garden Essential
Brand: The Grow Co
An organic, soil-enriching fish emulsion for dedicated gardeners.
The Grow Co offers a full gallon of organic fish emulsion that’s sustainably sourced, using fish parts that would otherwise go to waste. This eco-friendly approach means you’re nourishing your garden while also reducing environmental impact. The 2-3-1 NPK ratio is ideal for light, frequent applications, promoting steady, healthy growth without the risk of burning your plants.
Beyond feeding your plants, this fertilizer enriches the soil itself, improving its structure and fertility over time. It’s perfect for vegetable gardens, fruit trees, and flower beds alike. As a soil drench, it encourages beneficial microbial activity, creating a thriving underground ecosystem that supports long-term plant health. If you’re committed to organic gardening, this is a dependable choice that aligns with your values.
- Sustainably sourced ingredients
- Improves soil structure
- Balanced 2-3-1 NPK
- Mild fishy odor
- Requires regular use
Bloom City Wild Fish Fertilizer – Potent Alaskan Salmon Formula
Brand: Bloom City
A powerful, albeit smelly, fish emulsion for serious growers.
Bloom City’s 8-ounce wild fish fertilizer is derived from sustainable Alaskan salmon, delivering a potent blend of salmon emulsion and salmon oil. This unique combination is exceptionally high in omega-3 fatty acids and amino acids, which are beneficial for plant health and vigor. The result is a fertilizer that supports robust growth, whether you’re tending indoor plants or outdoor garden beds.
One thing you’ll notice immediately is the strong fishy smell—this is a sign of its authenticity and potency. While the odor may be off-putting indoors, it’s a small trade-off for the impressive results. This product is marketed as the highest quality and most potent option, and it lives up to that claim by providing essential nutrients that encourage bigger yields and healthier plants. If you can handle the scent, your plants will thank you.
- High omega-3 content
- Potent and concentrated
- Sustainable Alaskan salmon
- Strong fishy odor
- Small 8 oz bottle
Fertilome Fish Emulsion 5-1-1 – Classic Balanced Fertilizer
Fertilome’s fish emulsion is a trusted name in gardening, and this 32-ounce bottle delivers a balanced 5-1-1 NPK ratio that’s perfect for promoting deep green foliage, vigorous root systems, and sturdy plant structure. The higher nitrogen content makes it especially effective for leafy vegetables and plants that need a growth spurt. It’s derived from fish solubles, ensuring a natural source of nutrients.
This fertilizer is incredibly versatile—you can use it on indoor plants, outdoor gardens, and even trees. Simply mix it with water and apply using any convenient method, whether that’s a watering can, hose-end sprayer, or drip system. Remember to shake the bottle well before use to ensure even distribution. With its proven track record and ease of use, this is a reliable staple for any gardener.
- High nitrogen for foliage
- Versatile application methods
- Trusted brand
- Requires shaking before use
- Not organic certified
TPS Nutrients Fish Emulsion 32 oz – Mid-Size Garden Solution
This 32-ounce version from TPS Nutrients offers the same great formula as the smaller bottle but in a more generous size, making it ideal for gardeners with a few more plants to feed. The liquid salmon supplement is designed to boost root strength and promote lush foliage, ensuring your plants grow consistently and healthily. It’s suitable for both indoor and outdoor gardens, giving you flexibility.
The nutrient-rich formula provides essential elements that improve overall plant health and development. For vegetable gardeners, this emulsion helps promote healthier crops and improved yields, making it a valuable addition to your gardening routine. The larger bottle means fewer refills and better value for money, especially if you have a medium-sized garden or a collection of potted plants that need regular feeding.
- Generous 32 oz size
- Enhances crop yields
- Works indoors and outdoors
- Fishy smell
- May need dilution
TPS Nutrients Fish Emulsion Gallon – Bulk Supply for Large Gardens
Brand: TPS NUTRIENTS
A bulk fish emulsion that offers great value for serious gardeners.
For gardeners with extensive planting areas, this one-gallon jug from TPS Nutrients is a cost-effective solution. It provides the same root-strengthening, foliage-boosting benefits as the smaller sizes but in a bulk quantity that will last you through multiple growing seasons. The liquid salmon supplement is perfect for feeding large vegetable patches, flower beds, and even small orchards.
The nutrient-rich formula is designed to support consistent plant growth and improve overall plant health, ensuring your garden thrives. Whether you’re growing vegetables, herbs, or ornamentals, this fish emulsion delivers the essential nutrients needed for vibrant performance. The large container reduces the frequency of repurchasing, saving you time and money in the long run. Just be prepared for the characteristic fishy aroma when you open the jug.
- Bulk gallon size
- Cost-effective for big gardens
- Promotes vigorous growth
- Strong odor
- Heavy to handle
Bloom City Wild Fish Fertilizer 32 oz – Balanced Growth Support
This 32-ounce option from Bloom City is formulated with wild fish nutrients to support plant growth and overall vitality. It’s designed to encourage balanced development, making it suitable for a wide range of plants, including vegetables, flowers, and ornamentals. The natural nutrition helps improve soil health, which in turn benefits your plants’ long-term performance.
You can use this fertilizer both indoors and outdoors, making it a versatile addition to your gardening toolkit. Whether you’re caring for container plants on a balcony or tending to a backyard landscape, this emulsion provides the nutrients your plants need to thrive. The larger bottle is convenient for regular applications, and the wild fish source ensures you’re giving your plants a high-quality, natural boost.
- Wild fish nutrients
- Supports soil health
- Suitable for many plants
- Mild fishy smell
- Not as potent as concentrate
Fertilome Fish Emulsion 5-1-1 Gallon – Garden Workhorse
Brand: ferti-lome
A dependable, large-format fish emulsion for heavy-duty gardening.
Fertilome’s one-gallon fish emulsion is the larger version of their classic 5-1-1 formula, offering the same benefits but in a bulk size that’s perfect for extensive gardens. The high nitrogen content promotes deep green foliage and vigorous root systems, while the balanced nutrients help build solid plant structure. It’s derived from fish solubles, ensuring a natural source of nourishment.
This fertilizer can be used on indoor and outdoor plants, as well as trees, making it incredibly versatile. Mix it with water and apply using any method you prefer—just remember to shake well before each use. The gallon size is ideal for gardeners who have multiple beds or a large number of containers, as it reduces the need for frequent repurchases. It’s a dependable, no-fuss option for maintaining a healthy garden.
- Bulk gallon size
- High nitrogen content
- Versatile for plants and trees
- Requires shaking
- Not organic
Bloom City Wild Fish Fertilizer Gallon – Premium Potent Formula
Brand: Bloom City
A top-tier fish emulsion for those seeking the best results.
This one-gallon jug from Bloom City brings the same premium Alaskan salmon formula as the smaller sizes, but in a bulk quantity that’s perfect for dedicated gardeners. The salmon emulsion and oil are rich in omega-3 fatty acids and amino acids, providing exceptional nutrition for your plants. This potent blend supports vigorous growth and impressive yields, making it a favorite among serious growers.
As with other Bloom City products, you’ll notice the strong fishy smell—a testament to its authenticity and quality. The gallon size ensures you have plenty of fertilizer on hand for the entire growing season, whether you’re feeding a large vegetable garden, flower beds, or a collection of fruit trees. If you prioritize potency and are willing to tolerate the odor, this is an excellent investment for maximizing your garden’s potential.
- Premium Alaskan salmon
- High omega-3 and amino acids
- Bulk gallon size
- Very strong odor
- Pricey for the size
Emulsion de Escocia Cod Liver Oil – Health Supplement, Not Fertilizer
Brand: Emulsion de Escocia
A human health supplement, not suitable for gardening.
This product from Emulsion de Escocia is a dietary supplement, not a plant fertilizer. It’s a cod liver oil emulsion with natural cherry flavor, designed for human consumption to support immune function, brain health, heart wellness, and joint care. It contains vitamins A, D, E, and B1, along with omega-3 fatty acids, making it a comprehensive health tonic for people.
While it’s included in this list, it’s important to note that it serves a completely different purpose than fish emulsion fertilizers. If you’re looking for a plant nutrient solution, this isn’t the right choice. However, if you’re interested in a fish-based supplement for your own health, this product offers a palatable way to get essential nutrients. Just don’t pour it on your plants—your garden won’t benefit from it.
- Supports immune and heart health
- Pleasant cherry flavor
- Contains essential vitamins
- Not for plants
- Not a fertilizer
Buyer’s Guide: What to Consider
Choosing the right fish emulsion involves considering several key factors. Here are five essential points to guide your decision, helping you select a product that matches your gardening style and plant requirements.
- NPK Ratio: The NPK ratio indicates the percentages of nitrogen, phosphorus, and potassium. Higher nitrogen (first number) promotes leafy growth, while phosphorus supports roots and flowers. Choose based on your plants' needs.
- Source and Sustainability: Look for fish emulsion derived from sustainable sources, such as Alaskan salmon or fish byproducts. This ensures you're getting a quality product while minimizing environmental impact.
- Concentration and Size: Consider the concentration and bottle size. Concentrated formulas require dilution and may be more potent, while larger bottles offer better value for extensive gardens. Match the size to your gardening scale.
- Odor: Fish emulsion has a characteristic smell that can be strong. Some products are more pungent than others. If you're using it indoors, you may prefer a less odorous option or be prepared for the scent.
- Organic Certification: If organic gardening is important to you, check for organic certification. Some fish emulsions are certified organic, ensuring they meet strict standards for natural and sustainable production.
Conclusion
Fish emulsion is a fantastic natural fertilizer that can transform your garden, promoting lush growth and bountiful harvests. From compact bottles for indoor plants to bulk gallons for large plots, there’s a product for every gardener. The TPS Nutrients and Fertilome options offer reliable, balanced formulas, while Bloom City provides premium potency for those seeking maximum results.
Ultimately, the best fish emulsion depends on your specific needs—whether you prioritize organic sourcing, high nitrogen content, or value for money. Consider the size of your garden, your plants’ requirements, and your tolerance for odor. With the right choice, you’ll enjoy healthier, more vibrant plants all season long.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.