---
product_id: 2461339
title: "Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns"
brand: "neptune's harvest"
price: "€ 39.52"
currency: EUR
in_stock: true
reviews_count: 13
category: "Neptune's Harvest"
url: https://www.desertcart.hr/products/2461339-fish-and-seaweed-liquid-fertilizer-2-3-1-18oz-pint
store_origin: HR
region: Croatia
---

# 25% seaweed extract boosts plant vitality & color 75% hydrolyzed fish protein for nutrient-rich growth Liquid formula for fast absorption & easy application Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns

**Brand:** neptune's harvest
**Price:** € 39.52
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into the ocean’s secret for garden glory—grow smarter, not harder!

## Quick Answers

- **What is this?** Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns by neptune's harvest
- **How much does it cost?** € 39.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/2461339-fish-and-seaweed-liquid-fertilizer-2-3-1-18oz-pint)

## Best For

- neptune's harvest enthusiasts

## Why This Product

- Trusted neptune's harvest brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Max Yield Booster:** Enhances flavor, color, and fruit production—your garden’s secret weapon for bountiful harvests.
- • **Eco-Chic & Organic:** OMRI-listed, carbon-sequestering formula that’s safe for kids, pets, and the planet.
- • **Versatile Liquid Feeding:** Apply as soil drench or foliar spray—ideal for indoor & outdoor plants alike.
- • **Root Revival & Soil Health:** Stimulates strong roots while enriching soil microbes for long-term garden vitality.
- • **Ocean-Powered Nutrient Blend:** Harness the perfect 75/25 fish-to-seaweed ratio for unstoppable plant growth.

## Overview

Neptune's Harvest Fish & Seaweed Liquid Fertilizer is a premium 18oz organic plant food combining 75% hydrolyzed fish protein and 25% seaweed extract. This liquid fertilizer delivers essential nutrients quickly to vegetables, flowers, fruits, trees, and lawns, promoting robust root systems, vibrant blooms, and increased yields. OMRI-listed and eco-friendly, it supports soil health by feeding beneficial microbes and improving moisture retention, making it a versatile, sustainable choice for indoor and outdoor gardening.

## Description

Rose & Flowering Visit the Store Rose & Flowering Visit the Store Fish & Seaweed Fertilizer Visit the Store Fish & Seaweed Fertilizer Crab & Lobster Shell Visit the Store Crab & Lobster Shell Tomato & Veg Visit the Store Tomato & Veg Turf Formula Visit the Store Turf Formula Seaweed Plant Food Visit the Store Seaweed Plant Food Liquid Crab & Lobster Shell Visit the Store Liquid Crab & Lobster Shell Fish Fertilizer Visit the Store Fish Fertilizer

Review: Highly recommend! - Started using last year and was more than impressed with the results. Used on seedlings and had the healthiest I have ever had. Used throughout the year and had the best harvest I have ever had. Highly recommend!
Review: Stinks, but my plants love it! - I have to admit, this stuff smells pretty strong — definitely not something you want to sniff too closely. That said, I’ve been using it on my indoor plants and they are thriving! Leaves are greener, plants are bushier, and they just look so much healthier since I started using it. If you can handle the smell, it’s totally worth it. My plants are loving it, and that’s all that really matters!

## Features

- Combined for Maximum Growth: Neptune’s Harvest Fish & Seaweed organic fertilizer is an organic all-purpose liquid plant food formulated with 75% fish and 25% seaweed for a perfect blend of nutrients; this organic plant fertilizer delivers consistent feeding as a liquid fertilizer and plant food for vegetables, flowers, trees, lawns, and indoor plants, supporting balanced growth throughout the growing season and is safe for kids and pets
- Power of Fish & Seaweed: This fish & seaweed organic plant fertilizer uses hydrolyzed fish and seaweed to supply essential nutrients in a balanced, plant-ready form; the organic all-purpose liquid fertilizer improves flavor and nutritional value of produce, brings out bright color in flowers, and supports strong plant development, making it a reliable liquid fertilizer for gardens, lawns, and indoor plants
- How to Use: This organic all-purpose liquid plant food is easy to use and highly efficient, requiring only 1 oz. per gallon of water; the liquid fertilizer can be applied as a soil drench or foliar feed and is excellent for transplants and established plants; for indoor plants, mix 1 tablespoon per gallon of water and feed weekly; for outdoor plants, mix 1/8 cup per gallon of water and apply every 1-2 weeks; this organic liquid fertilizer fits seamlessly into multiple gardening routines
- Supports Soil Performance: This fish & seaweed fertilizer builds organic matter, feeds beneficial bacteria and microbes, and improves soil structure over time; soil becomes looser, retains moisture, drains better, and supports healthier roots; this organic fish fertilizer is OMRI Listed, sequesters carbon, and helps plants become less susceptible to insects and disease while improving long-term soil quality
- Package Contents: Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint (Pack of 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009HLVIY0 |
| Best Sellers Rank | #814 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #47 in Garden Fertilizers #1,070 in Diet & Sports Nutrition |
| Brand | Neptune's Harvest |
| Brand Name | Neptune's Harvest |
| Coverage | Full |
| Customer Reviews | 4.7 out of 5 stars 7,089 Reviews |
| Global Trade Identification Number | 00081435218123 |
| Included Components | Item only |
| Item Form | Liquid |
| Item Type Name | fertilizers |
| Item Weight | 18 Ounces |
| Liquid Volume | 473 Milliliters |
| Manufacturer | Neptune's Harvest |
| Mixing Ratio | 1:20 |
| Model Number | FS118 |
| Number of Items | 1 |
| Part Number | sample_sku_72579 |
| Specific Uses For Product | Organic |
| Target Species | Fish & Seaweed |
| UPC | 081435218130 081435218123 |
| Unit Count | 18.0 Ounce |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Neptune's Harvest
- **Item Form:** Liquid
- **Item Weight:** 18 Ounces
- **Liquid Volume:** 473 Milliliters
- **Specific Uses For Product:** Organic

## Images

![Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 1](https://m.media-amazon.com/images/I/61Bgc8oLKkL.jpg)
![Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 2](https://m.media-amazon.com/images/I/71UmV9PYj5L.jpg)
![Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 3](https://m.media-amazon.com/images/I/71hdwNcUH+L.jpg)
![Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 4](https://m.media-amazon.com/images/I/81EApTijCzL.jpg)
![Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 5](https://m.media-amazon.com/images/I/71P-H++KRzL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly recommend!
*by A***R on April 30, 2026*

Started using last year and was more than impressed with the results. Used on seedlings and had the healthiest I have ever had. Used throughout the year and had the best harvest I have ever had. Highly recommend!

### ⭐⭐⭐⭐⭐ Stinks, but my plants love it!
*by B***. on February 25, 2026*

I have to admit, this stuff smells pretty strong — definitely not something you want to sniff too closely. That said, I’ve been using it on my indoor plants and they are thriving! Leaves are greener, plants are bushier, and they just look so much healthier since I started using it. If you can handle the smell, it’s totally worth it. My plants are loving it, and that’s all that really matters!

### ⭐⭐⭐⭐⭐ My Magical Neptune Elixir
*by C***Y on March 2, 2024*

I use this on my garden one week out of the month, with regular fertilizer two weeks of the month, and also regular bone meal. I did notice that when I use this kelp stuff, it seems to generate new roots from the base of the plant, get stronger, and producing more fruits and veggies! These things are most likely to happen during/after kelp week. This stuff goes a long way for a small bottle. It dissolves perfectly, and there is a very faint ocean smell to the water when it is mixed in. Nothing terrible smelling. We’ve been using this product for years in our garden, and it truly gives an extra boost to any plants. Our garden truly thrives, and produces so many fruits and vegetables. We use it on almost everything: our flowers, strawberries, blueberries, melons, tomatoes, lettuce, garlic, cucumbers, onions, peppers, carrots, squash plants and more! Fish and Seaweed are known to build the natural sugar in plants. Flowers and foliage will be stronger and more colorful. Adding this to your garden will give you better vegetables/fruit yields. This is a great fertilizer for a few key reasons: The first is that it's a great source of Phosphorus which is used by new plants to produce strong roots and so is great for any root vegetables! This is a secret ingredient that all gardeners use to improve their garden! I highly recommend using for your plants!

## Frequently Bought Together

- Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1, 18 Ounce
- Burpee Bone Meal Fertilizer | Add to Potting Soil | Strong Root Development | OMRI Listed for Organic Gardening | for Tomatoes, Peppers, and Bulbs, 1-Pack, 3 lb (1 Pack)
- Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-21*