---
product_id: 2620934
title: "Neptune's Harvest Fish Fertilizer (2-4-1) - 36oz Bottle - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food"
brand: "neptune's harvest"
price: "€ 78.42"
currency: EUR
in_stock: true
reviews_count: 13
category: "Neptune's Harvest"
url: https://www.desertcart.com.cy/products/2620934-neptunes-harvest-fish-fertilizer-2-4-1-36oz-bottle-organic
store_origin: CY
region: Cyprus
---

# 100% North Atlantic fish sourced 2-4-1 NPK ratio for balanced growth Cold-processed to preserve nutrients Neptune's Harvest Fish Fertilizer (2-4-1) - 36oz Bottle - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food

**Brand:** neptune's harvest
**Price:** € 78.42
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock Nature’s Secret Growth Elixir — Because Your Plants Deserve the Ocean’s Best!

## Quick Answers

- **What is this?** Neptune's Harvest Fish Fertilizer (2-4-1) - 36oz Bottle - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food by neptune's harvest
- **How much does it cost?** € 78.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/2620934-neptunes-harvest-fish-fertilizer-2-4-1-36oz-bottle-organic)

## 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

- • **Pure Ocean Power:** Harnesses nutrient-rich North Atlantic fish for unmatched organic plant vitality.
- • **Soil Health Booster:** Feeds beneficial microbes, improves soil structure, raises Brix levels & naturally deters pests for long-term garden success.
- • **All-in-One Nutrition:** Beyond NPK—delivers amino acids, omega oils, micronutrients & trace elements for thriving plants.
- • **Cold-Process Preservation:** Unique cold hydrolysate method locks in vitamins, enzymes & growth hormones for maximum impact.
- • **Versatile & Easy Application:** Just 1 oz per gallon, perfect for indoor/outdoor use as soil drench or foliar feed with natural nutrient adhesion.

## Overview

Neptune's Harvest Fish Fertilizer is a premium organic liquid plant food made from 100% North Atlantic ocean fish using a cold hydrolysate process that preserves vital nutrients. With a balanced 2-4-1 NPK ratio plus essential micronutrients, amino acids, and omega oils, it supports robust growth for vegetables, flowers, trees, and lawns. Easy to use indoors or outdoors, it enhances soil health by feeding microbes and improving structure, while naturally deterring pests. OMRI listed and pet-safe, it’s the go-to choice for millennial gardeners seeking sustainable, high-performance plant nutrition.

## Description

desertcart.com : Neptune's Harvest Fish Fertilizer 2-4-1-36oz Bottle (Pack of 1) - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food : Fertilizers : Patio, Lawn & Garden

Review: These fertilizers are great - i've been using neptune fish fertilizers for awhile, when my plants look a little limp and maybe overwatered, these help revive plants. I use them on my avocado trees, my blueberry plants and other vegetables and they all do well when i feed them a twice sometimes more a year watering with this concentrated fertilizer. Yes it smells, but it works. It's interesting that a broken down animal like fish can fertilize a plant, like it feeds on the protein, so not sure how it works, but just found it interesting and great that it works so well.
Review: Beautful leafy Vegetables ! - Love this stuff for my leafy plants. Been applying it on my cabbages, spinach,kale and chard this fall. Just wow! They love it. Be sure to switch it up in the late spring/early summer tho, as it will attract slugs and snails.

## 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 quality
- Package Contents: Neptune's Harvest 2-4-1 Fish Fertilizer - 36oz Bottle (Pack of 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0012Q2TFA |
| Best Sellers Rank | #11,295 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #478 in Garden Fertilizers |
| Brand | Neptune's Harvest |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,255) |
| Global Trade Identification Number | 00081435036123 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 2.25 pounds |
| Item model number | HF136 |
| Liquid Volume | 946 Milliliters |
| Manufacturer | Neptune's Harvest |
| Number of Items | 1 |
| Product Dimensions | 3.5 x 3.5 x 8.75 inches |
| Specific Uses For Product | Shade,Shade Protector |
| UPC | 081435036123 190283017229 |
| Unit Count | 36.0 Ounce |

## Product Details

- **Brand:** Neptune's Harvest
- **Item Form:** Liquid
- **Item Weight:** 2.3 Pounds
- **Liquid Volume:** 946 Milliliters
- **Specific Uses For Product:** Shade,Shade Protector

## Images

![Neptune's Harvest Fish Fertilizer (2-4-1) - 36oz Bottle - Organic Liquid Plant Fertilizer - Fish Hydrolysate for Vegetables, Flowers, Fruit, Trees, Grass - Indoor and Outdoor Plant Food - Image 1](https://m.media-amazon.com/images/I/615yS3nXd0L.jpg)

## Questions & Answers

**Q: Do you know in what way this is different from neptune's harvest sw136 organic seaweed plant food?**
A: Seaweed is more of a micronutrient supplier with little fertilizer content, while the Neptunes Harvest fish fertilizer is mostly fertilizer, with quite a lot of micronutrients too. But not as much as in seaweed.

**Q: Whats the difference between buying this and buying the neptune's harvest organic hydrolized fish & seaweed fertilizer ?**
A: The npk rating is different . Just the fish has a npk of 2-4-1 where as the fish with seaweed has npk of 2-3-1 . I would think the one with seaweed would contain more mircronutrients . But both are great and made with hydrolized fish .

**Q: Best way to apply product?  Anyway to attach to a hose?**
A: For small areas use a watering can.  For larger areas dilute with about 1/4-12 water and spray with a hose end sprayer.

**Q: Would this product be too "rich", or even inappropriate for young, recently planted Red Maple trees ?**
A: I think this product is great, but with a young tree, I would use a much weaker solution than they suggest.  I am very pleased with the results, but remember, you don't want your young tree to grow too fast.  Just use 1/r-1/3 of the solution and see how it grows.  I have used this on japanese maples and it really improves the color of the leaves.

## Customer Reviews

### ⭐⭐⭐⭐⭐ These fertilizers are great
*by M***O on January 6, 2025*

i've been using neptune fish fertilizers for awhile, when my plants look a little limp and maybe overwatered, these help revive plants. I use them on my avocado trees, my blueberry plants and other vegetables and they all do well when i feed them a twice sometimes more a year watering with this concentrated fertilizer. Yes it smells, but it works. It's interesting that a broken down animal like fish can fertilize a plant, like it feeds on the protein, so not sure how it works, but just found it interesting and great that it works so well.

### ⭐⭐⭐⭐⭐ Beautful leafy Vegetables !
*by T***I on December 18, 2025*

Love this stuff for my leafy plants. Been applying it on my cabbages, spinach,kale and chard this fall. Just wow! They love it. Be sure to switch it up in the late spring/early summer tho, as it will attract slugs and snails.

### ⭐⭐⭐⭐⭐ Works great !
*by M***X on December 26, 2025*

Smell is rough but there is a noticeable difference in the plants fertilized with this stuff a little really goes a long way . I would purchase again tomato and strawberry plants had wayyyy more activity

## Frequently Bought Together

- Neptune's Harvest Fish Fertilizer 2-4-1, 36 Ounce
- Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 36 oz
- Neptune's Harvest Seaweed Fertilizer 0-0-1 (36 Ounce)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.cy/products/2620934-neptunes-harvest-fish-fertilizer-2-4-1-36oz-bottle-organic](https://www.desertcart.com.cy/products/2620934-neptunes-harvest-fish-fertilizer-2-4-1-36oz-bottle-organic)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-18*