Comparison: Best Compost Tea Fish Fertilizer (Updated | Nov 30th)
If you’re looking to give your garden a natural boost, you’ve probably heard about compost tea and fish fertilizer—two powerhouse amendments beloved by organic growers. But which one delivers the best results for your tomatoes, greens, or flower beds? In this side-by-side comparison, we’ll break down the pros, nutrient profiles, ease of use, and real garden impact of the top compost tea and fish fertilizer options. Let’s dig in.
- Best for instant brew-free: Organic Instant Compost Tea (5 oz) – Probiotic Plant Food Bloom Booster & Yield Booster for Hydroponics & All Gardening Types | Microbial Formula Converts Amino Acids for Enhanced Growth (5
- Best for soil micro boost: Super Compost Tea_P (64 oz – 1/2 Gallon) Natural and Organic for Plant Food
- Best for bloom boost: Neptune’s Harvest Fish & Seaweed Fertilizer 2-3-1
- Best for worm power: Organic Earthworm Tea Concentrate and Compost and Bokashi Booster by Bloom City
- Best for hydrolyzed fish: Neptune’s Harvest Hydrolyzed Fish Fertilizer
- Best for broad spectrum: Organic Liquid Compost: Fast-Acting Alternative to Messy and Smelly Composting | Perfect for Brewing Compost Teas (32oz
- Best for microbe rich: Compost Tea
- Best for bulk soil boost: Super Compost Tea (128 oz – 1 Gallon
- Best for odor-free humus: Fishnure – Humus Fish Compost Fertilizer for Indoor Plants
- Best for omri certified: Alaska Fish Fertilizer OMRI Listed 5-1-1
Product Comparison: Best Compost Tea Fish Fertilizer
Organic Instant Compost Tea (5 oz) – Probiotic Plant Food Bloom Booster & Yield Booster for Hydroponics & All Gardening Types | Microbial Formula Converts Amino Acids for Enhanced Growth (5, Ounces)
- NO BREWING REQUIRED: Mighty Plant Instant Compost Tea is 100% Water Soluble and requires no compost brewing. Simply add water, stir, and it’s ready for use as a root drench or foliar spray, embodying ease of use with 100% organic and high-quality natural ingredients.
- POWERFUL BIOLOGICALS: Upon activation in water, it releases potent biologicals that convert amino acids into essential organic molecules, significantly benefiting root zones, growth, and yields without any fillers.
- HIGHLY ADVANCED FORMULA: This formula is a culmination of extensive research, incorporating microbes, specific amino acids, along with Kelp and Yeast Extracts. It’s designed to enrich root zone biology sustainably.
- ECONOMICAL & EFFICIENT: One pound of this powerful formula can produce up to 160 gallons, while a 5 oz package yields up to 50 gallons of Compost Tea, making it a cost-effective solution for any gardening scale.
- ORGANIC FACTORY: A relentless producer of beneficial organic molecules, it works continuously to enhance plant vigor, health, growth, and yield, ensuring your garden thrives.
- HYDROPONICS OR CONVENTIONAL GARDENING: Whether you’re utilizing hydroponics or traditional gardening methods, this compost tea seamlessly integrates into your irrigation system without clogging emitters and is compatible with all Feeding Chart components.
- CONSISTENT RESULTS: Say goodbye to the unpredictability of compost tea brewing. Our formula guarantees uniform quality with each use, thanks to the pharmaceutical-grade brew media.
- VERSATILITY UNMATCHED: Mighty Plant Instant Compost Tea is unparalleled in its application flexibility. It’s perfectly suited for farms, gardens, landscapes, and sports turf, promoting robust growth across all plant types.
- 🇺🇲 MADE WITH PRIDE: Made in Sparta, Tennessee by family members.
- Get Stronger, Healthier Plants Now! – Your plants go to Bloom Booster. Whether you’re a beginner or expert gardener, this instant compost tea ensures explosive growth, resilient plants, and unbeatable yields—start feeding your garden today!
Super Compost Tea_P (64 oz – 1/2 Gallon) Natural and Organic for Plant Food, Nutrient, Fertilizer and Growth Efficiency
- The organic compounds and particulates leach into the soil and provide improved pathways for nutrients to be delivered to the plants roots.
- It contains micro and macro nutrients that aid in the proliferation of soil microbes and beneficial microorganisms.
- A key source organic matter that buffers soil PH
- Reduces chemical fertilizer requirements as plants are more effective utilizing nutrients.
- Compost tea can be sprayed directly on the leaves not just to wash off dust, but provide a natural food source for beneficial microorganisms.
Neptune’s Harvest Fish & Seaweed Fertilizer 2-3-1, 18 Ounce
- Grow a beautiful vegetable garden
- Flowers and foliage will be stronger and more colorful
- Blooms will be more plentiful, fragrant and longer lasting
- Easy to mix and apply by hand, sprayer, or drip line
Organic Earthworm Tea Concentrate and Compost and Bokashi Booster by Bloom City, Quart (32 oz)
- 100% SUSTAINABLE ORGANIC INGREDIENTS: Brewed and concentrated organically using Washington worms and black strap molasses
- HIGHLY CONCENTRATED FORMULA WITH BILLIONS OF BACTERIA: Makes other fertilizers and soil more effective for plant growth
- CAN BE USED ON HOUSEPLANTS, GREENHOUSE PLANTS AND OUTDOOR PLANTS
- GREAT FOR STARTING A COMPOST TEA RECIPE OR AS A COMPOST REPLACEMENT FOR GARDENS
- HIGHEST QUALITY, MOST POTENT, BEST VALUE, BIGGEST YIELD: Bloom City’s ingredients are better for plants, better for you, and better for the planet. Simply the best choice for the conscientious grower
Neptune’s Harvest Hydrolyzed Fish Fertilizer
- Sold on Amazon
Organic Liquid Compost: Fast-Acting Alternative to Messy and Smelly Composting | Perfect for Brewing Compost Teas (32oz, Treats Up to 5,000 Sq.Feet)
- Provides a broad spectrum of organic nutrients including nitrogen, phosphorus, potassium, calcium, magnesium, and silica.
- Made from high-quality organic ingredients such as fish manure, fish, emulsion, sea kelp, volcanic ash, and mycorrhizal fungi.
- Made in the USA, ensuring quality standards are met.
Compost Tea, Boosts Microbial Activity in Gardens for All Plants, 8 oz (250mL)
- Microbe-rich compost tea for healthy plant growth
- Enhances soil fertility and promotes strong roots
- Easy-to-follow care instructions included
- Made in the USA
Super Compost Tea (128 oz – 1 Gallon, in Two Half Gallon Bottles) Natural and Organic for Plant Food, Nutrient, Fertilizer and Growth Efficiency
- The organic compounds and particulates leach into the soil and provide improved pathways for nutrients to be delivered to the plants roots.
- It contains micro and macro nutrients that aid in the proliferation of soil microbes and beneficial microorganisms.
- A key source of organic matter that buffers soil PH
- Reduces chemical fertilizer requirements as plants are more effective utilizing nutrients.
- Compost tea can be sprayed directly on the leaves not just to wash off dust, but provide a natural food source for beneficial microorganisms.
Fishnure – Humus Fish Compost Fertilizer for Indoor Plants, Outdoor Houseplant Fertilizer Supports Natural Production of Plant Food for Houseplants, Gardening Essentials, Gardener Gifts, 8 lbs
- Odor & Chemical-Free Humus Fish Fertilizer for Large Areas: Our fish fertilizer for plants is a compost soil conditioner with no fishy smell. Each 8-lb bag of fertilizer for indoor plants covers up to 60 sq ft per pound, making it ideal for gardens/lawns.
- Enhances Yield and Resilience : Create a thriving environment for your plants with this dry alternative to a fish emulsion fertilizer. Our fertilizer for grass and other plants promotes resilience and better absorption of plant nutrients.
- Garden & Houseplant Fertilizer for Better Aeration: Keep your plants’ soil well-aerated with this liquid fertilizer alternative. Whether used alone or with compost worms, our slow-release garden fertilizer encourages microbial activity.
- Supports Soil Fertility & Water-Holding Capacity: An OMRI-listed fertilizer, Fishnure creates a long-lasting humus soil that won’t decompose further. This dry option for fish emulsion is an effective rose fertilizer, bonsai fertilizer, and more.
- Highly Concentrated Indoor/Outdoor Plant Growth Solution: Our compost soil fish manure fertilizer for plant pots or garden beds delivers consistent results. An ideal hormone and antibiotic-free vegetable fertilizer, it effectively supports lush growth.
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
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 should I look for when choosing a compost tea or fish fertilizer?
Focus on the product’s concentration, coverage per pound, and whether it’s ready‑to‑use or requires brewing. Look for organic certification (e.g., OMRI listed) and ingredients like kelp, seaweed, or beneficial microbes that boost soil biology. Also consider the form—liquid concentrate, powder, or dry humus—based on your preferred application method.
How does an instant, water‑soluble compost tea compare to a brewed compost tea?
Instant compost teas, such as the 5 oz Organic Instant Compost Tea, dissolve directly in water and need no brewing time, making them ideal for quick foliar sprays or root drenches. Brewed teas, like the 64 oz Super Compost Tea, require mixing and steeping but often provide a richer microbial community from the raw ingredients. Both deliver nutrients, but the instant version offers convenience while the brewed version may give a broader spectrum of microbes.
Is a fish‑based fertilizer like Neptune’s Harvest 2‑3‑1 better than a kelp‑rich compost tea?
Fish fertilizers deliver a high nitrogen punch and fast‑acting growth, which is great for leafy vegetables and rapid greening. Kel‑p‑rich compost teas, such as the Organic Liquid Compost, provide a balanced mix of macro and micronutrients plus beneficial fungi, supporting overall plant health and stress tolerance. Choosing between them depends on whether you need a quick nitrogen boost or a more holistic soil‑building amendment.
Which product gives the best value per gallon of finished solution?
The Organic Instant Compost Tea claims one pound can produce up to 160 gallons, meaning the 5 oz package yields about 50 gallons, offering excellent cost efficiency. In contrast, the 128 oz Super Compost Tea produces roughly one gallon per bottle, so its per‑gallon cost is higher. For budget‑conscious growers, the high‑yield instant tea typically provides the most economical coverage.
Do I need a separate sprayer for foliar applications, or can I use the same tool for soil drenching?
Most liquid concentrates, including the Organic Instant Compost Tea and the Fish & Seaweed Fertilizer, can be applied with a standard garden sprayer for both foliar sprays and root drenches. Dry products like the Fishnure Humus Fish Fertilizer require mixing with water first, after which the solution can be sprayed or poured into drip lines. Having a versatile sprayer simplifies switching between application methods.
How important is the presence of beneficial microbes in a compost tea?
Beneficial microbes are the core of a compost tea’s ability to improve soil structure, nutrient uptake, and disease resistance. Products that list high microbial counts, such as the 8 oz Compost Tea Boosts Microbial Activity, often contain billions of live bacteria that colonize the rhizosphere. Selecting a tea with a strong microbial profile can lead to healthier root systems and more resilient plants.
Are there any odor or safety concerns with fish‑based fertilizers?
Traditional liquid fish emulsions can have a strong smell, but many modern formulations, like the Fishnure Humus Fish Fertilizer, are odor‑free and dry, eliminating the typical fishy odor. All listed products are organic and OMRI‑listed, meaning they meet organic gardening standards and are safe for edible crops when used as directed. Always wear gloves during mixing to avoid skin irritation, especially with highly concentrated concentrates.