---
product_id: 17289910
title: "Neptune's Harvest Fish Fertilizer (2-4-1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food (Gallon)"
brand: "neptune's harvest"
price: "R4452"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Neptune's Harvest"
url: https://www.desertcart.co.za/products/17289910-neptunes-harvest-fish-fertilizer-2-4-1-organic-liquid-plant
store_origin: ZA
region: South Africa
---

# 2-4-1 NPK ratio for balanced growth OMRI Listed organic, safe for kids & pets Cold-processed fish hydrolysate preserves nutrients Neptune's Harvest Fish Fertilizer (2-4-1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food (Gallon)

**Brand:** neptune's harvest
**Price:** R4452
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow like a pro with Neptune’s Harvest—where science meets nature’s secret sauce!

## Quick Answers

- **What is this?** Neptune's Harvest Fish Fertilizer (2-4-1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food (Gallon) by neptune's harvest
- **How much does it cost?** R4452 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/17289910-neptunes-harvest-fish-fertilizer-2-4-1-organic-liquid-plant)

## 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

- • **Safe & Sustainable:** OMRI certified organic, non-toxic, and naturally deters pests—perfect for indoor and outdoor gardens.
- • **Soil Health Booster:** Feeds beneficial microbes, improves soil structure, moisture retention, and long-term fertility.
- • **Ultra-Nutrient Dense:** Beyond NPK—packed with amino acids, enzymes, omega oils, and trace minerals for superior plant health.
- • **Effortless Application:** Just 1 oz per gallon for soil drench or foliar feed—max absorption with natural sticker-spreader action.
- • **Nature’s Perfect Growth Formula:** Harness the power of 100% North Atlantic fish hydrolysate for nutrient-rich, vibrant plants.

## Overview

Neptune’s Harvest Fish Fertilizer (2-4-1) is an organic liquid plant food made from cold-processed North Atlantic fish hydrolysate. It delivers a balanced nutrient profile enriched with vitamins, amino acids, enzymes, and omega oils to boost plant growth, improve soil health, and increase crop quality. Safe for indoor and outdoor use, this OMRI-listed fertilizer supports sustainable gardening with easy application and natural pest deterrence.

## Description

desertcart.com : Neptune's Harvest Fish Fertilizer (2-4-1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food (Gallon) : Garden Fertilizers : Patio, Lawn & Garden

Review: Good stuff! - My plants are doing way better. They all look so good and healthy. When mixing it stinks a little but it goes right away.
Review: Great new growth - Stinky, but good for leaf growth! It felt like I refreshed my plants in 24 hrs

## Features

- Derived for Maximum Growth: Start with nutrition designed to work with nature; Neptune’s Harvest Organic Fish Fertilizer 2-4-1 is a liquid fish fertilizer and organic fish plant food made using a unique cold process that protects the vitamins, amino acids, enzymes, and growth hormones; sourced from clean, mineral rich North Atlantic Ocean fish and never lake, farmed, or river fish; this fertilizer supports lawns, vegetables, flowers, and indoor plants throughout the growing season and is safe for kids and pets
- Power of Fish Hydrolysate: Crafted from post-fillet ocean fish using 100% of the fish, this organic plant fertilizer delivers complete nutrition in nature’s perfect balance; containing far more than NPK, it supplies micronutrients, trace elements, vitamins, minerals, amino acids, enzymes, and omega oils, making this plant fertilizer beneficial for everything that grows while supporting better yield, improved quality, and nutrient-dense food without the offensive odor common in fish emulsions
- How to Use: Simple and efficient across growing spaces, this liquid plant food requires only one ounce per gallon of water and works as a soil drench or foliar feed; ideal as an indoor plant fertilizer and for outdoor gardens, trees, lawns, and vegetables, this liquid fish fertilizer acts as a natural sticker and spreader, helping nutrients adhere better to plant surfaces for effective absorption
- Supports Soil Performance: This organic soil amendments solution 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, helps raise Brix levels, sequesters carbon, and may deter deer naturally, helping plants become less susceptible to insects and disease while improving long-term soil qulity
- Package Contents: Neptune's Harvest (2-4-1) Fish Fertilizer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IJCZC4 |
| Application Method | soil drench or foliar feed |
| Best Sellers Rank | #12,107 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #310 in Garden Fertilizers |
| Brand | Neptune's Harvest |
| Brand Name | Neptune's Harvest |
| Coverage | Medium |
| Customer Reviews | 4.7 out of 5 stars 3,092 Reviews |
| Global Trade Identification Number | 00081435040090 |
| Included Components | fertilizers |
| Item Form | Liquid |
| Item Type Name | Neptune's Harvest |
| Item Weight | 9 pounds |
| Liquid Volume | 3784 ml |
| Manufacturer | Neptune's Harvest |
| Mixing Ratio | 1:128 |
| Model Number | HF191-1 |
| Part Number | HF191 |
| Specific Uses For Product | Organic |
| Target Species | plants |
| UPC | 081435040090 |
| Unit Count | 128 Fluid Ounces |

## Product Details

- **Brand:** Neptune's Harvest
- **Item Form:** Liquid
- **Item Weight:** 9 pounds
- **Liquid Volume:** 3784 ml
- **Specific Uses For Product:** Organic

## Images

![Neptune's Harvest Fish Fertilizer (2-4-1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food (Gallon) - Image 1](https://m.media-amazon.com/images/I/614Hj8-DC1L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff!
*by R***L on July 15, 2026*

My plants are doing way better. They all look so good and healthy. When mixing it stinks a little but it goes right away.

### ⭐⭐⭐⭐⭐ Great new growth
*by M***A on May 26, 2026*

Stinky, but good for leaf growth! It felt like I refreshed my plants in 24 hrs

### ⭐⭐⭐⭐⭐ Must have for plant lovers!
*by F***N on November 8, 2023*

Alright, folks, gather 'round, and let me regale you with my adventure in the world of fish poop fertilizer. Now, I'm no expert in gardening, but this stuff had me curious, and curiosity didn't just kill the cat; it fertilized it! First things first, I opened the bag, and oh boy, it hit me like a fish market on a hot summer's day. The smell? Let's just say it's not exactly the perfume of the year. But I thought, "Hey, it's fish poop; what did I expect, lavender fields?" So, you know, just be prepared to hold your nose or light a scented candle when you use this stuff. Now, here's the good part. My plants loved it! I mean, they went absolutely bananas. It was like they'd discovered the secret to plant nirvana. It's like feeding your flora a Michelin-star meal – they thrive and flourish like they're at a garden party of the century. And let's not forget the novelty factor. I mean, telling your friends you're using fish poop to fertilize your garden? Priceless. It's like gardening with a touch of bathroom humor. In conclusion, fish poop fertilizer is like a smelly, magical elixir for your plants. If you can get past the pungent aroma, your garden will thank you with lush, vibrant blooms and veggies. So, if you're ready to dive into the world of stinky horticulture, this stuff is the catch of the day. Just remember to bring your nose clips!

## Frequently Bought Together

- Neptune's Harvest Fish Fertilizer 2-4-1, Gallon
- Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 1 Gallon
- Neptune's Harvest Seaweed Fertilizer 0-0-1, Gallon

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**Shop now:** [https://www.desertcart.co.za/products/17289910-neptunes-harvest-fish-fertilizer-2-4-1-organic-liquid-plant](https://www.desertcart.co.za/products/17289910-neptunes-harvest-fish-fertilizer-2-4-1-organic-liquid-plant)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-10-19*