---
product_id: 1332115
title: "Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns"
brand: "neptune's harvest"
price: "€ 60.17"
currency: EUR
in_stock: true
reviews_count: 10
category: "Neptune's Harvest"
url: https://www.desertcart.hr/products/1332115-neptunes-harvest-fish-and-seaweed-liquid-fertilizer-2-3-1
store_origin: HR
region: Croatia
---

# 25% seaweed boosts flavor & color vibrancy 75% hydrolyzed fish for nutrient-rich growth Liquid formula for fast, even absorption Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns

**Brand:** neptune's harvest
**Price:** € 60.17
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock your garden’s full potential with nature’s ultimate growth elixir!

## Quick Answers

- **What is this?** Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns by neptune's harvest
- **How much does it cost?** € 60.17 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/1332115-neptunes-harvest-fish-and-seaweed-liquid-fertilizer-2-3-1)

## 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

- • **Soil Health Booster:** Feeds beneficial microbes and improves soil structure for long-term garden resilience.
- • **Versatile Application:** Use indoors or outdoors—soil drench or foliar feed—tailored for every plant’s unique needs.
- • **Kid & Pet Safe Formula:** Organic and gentle, so your family and furry friends stay safe while your garden thrives.
- • **Effortless Growth Routine:** Just 1 oz per gallon—easy dosing that fits seamlessly into your busy lifestyle.
- • **Balanced Nutrient Powerhouse:** A perfect 2-3-1 NPK ratio combining fish and seaweed for unstoppable plant vitality.

## Overview

Neptune's Harvest Fish & Seaweed Liquid Fertilizer is a premium organic plant food blending 75% hydrolyzed fish and 25% seaweed in a 2-3-1 NPK ratio. This 36oz liquid fertilizer supports robust growth, vibrant colors, and improved flavor for vegetables, flowers, fruits, trees, and lawns. Safe for indoor and outdoor use, it enhances soil health by feeding beneficial microbes and improving moisture retention. Easy to apply with precise dosing, it’s OMRI listed and ideal for professional gardeners seeking sustainable, high-yield results.

## Description

desertcart.com : Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns : Fish Emulsion Organic Fertilizer : Patio, Lawn & Garden

Review: Big Yields, Beautiful Plants, Fair Price - My tomatoes and herbs love it. So do my houseplants. I love it for two reasons: One, it helps me get big vegetable yields and grow beautiful plants. Two, it's all natural. As for the price, it's fair. Not the cheapest fertilizer on the market, but it's worth every penny.
Review: Love this stuff - I think this is a great organic fertilizer that can be used throughout your garden whether your plants are in the ground, potted, or indoors for seedlings or established plants. I highly recommend it. All of my plants love it and it is not harsh on any of them. Definitely follow the instructions on the bottle. The key for me is to not water the plants right before. If it is for potted plants and depending on the size I do little by little. Then after I finish I will go back to the first one to see if it needs more. You don't want the fertilizer draining out of the bottle - you want to make sure it all stays in the soil. This is fermented fish and seaweed so the concentrate in the bottle does have a punch as expected but once it is diluted there is barely any smell or any off putting smell. That is also why I do little by little so the fertilizer does not drain down into the drip trays. I can see it making the smell stronger as it evaporates.

## 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) - 36oz Bottle (Pack of 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000OWBUSA |
| Best Sellers Rank | #1,088 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #70 in Garden Fertilizers |
| Brand | Neptune's Harvest |
| Customer Reviews | 4.7 4.7 out of 5 stars (7,027) |
| Global Trade Identification Number | 00081435236127 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 2.25 pounds |
| Item model number | FS136 |
| Liquid Volume | 946 Milliliters |
| Manufacturer | Neptune's Harvest |
| Number of Items | 1 |
| Product Dimensions | 4 x 4 x 9 inches |
| Specific Uses For Product | Plant Growth, Root Development, Seed Development, Soil Conditioning |
| UPC | 081435236127 |
| Unit Count | 36.0 Fluid Ounces |

## Product Details

- **Brand:** Neptune's Harvest
- **Item Form:** Liquid
- **Item Weight:** 36 Ounces
- **Liquid Volume:** 946 Milliliters
- **Specific Uses For Product:** Plant Growth, Root Development, Seed Development, Soil Conditioning

## Images

![Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 36oz Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns - Image 1](https://m.media-amazon.com/images/I/61VScWLAVnL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Big Yields, Beautiful Plants, Fair Price
*by M***E on November 1, 2025*

My tomatoes and herbs love it. So do my houseplants. I love it for two reasons: One, it helps me get big vegetable yields and grow beautiful plants. Two, it's all natural. As for the price, it's fair. Not the cheapest fertilizer on the market, but it's worth every penny.

### ⭐⭐⭐⭐⭐ Love this stuff
*by D***D on March 25, 2024*

I think this is a great organic fertilizer that can be used throughout your garden whether your plants are in the ground, potted, or indoors for seedlings or established plants. I highly recommend it. All of my plants love it and it is not harsh on any of them. Definitely follow the instructions on the bottle. The key for me is to not water the plants right before. If it is for potted plants and depending on the size I do little by little. Then after I finish I will go back to the first one to see if it needs more. You don't want the fertilizer draining out of the bottle - you want to make sure it all stays in the soil. This is fermented fish and seaweed so the concentrate in the bottle does have a punch as expected but once it is diluted there is barely any smell or any off putting smell. That is also why I do little by little so the fertilizer does not drain down into the drip trays. I can see it making the smell stronger as it evaporates.

### ⭐⭐⭐⭐⭐ Oceanic Elixir for Earthly Abundance: The Sea's Secret to Garden Glory!
*by M***. on March 17, 2023*

Dive into the bountiful benefits of Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer, a 36-ounce bottle of nutrient-rich goodness that will have your plants flourishing like never before! This sea-sourced solution is packed with the finest ingredients from the ocean's depths, providing your garden with a powerful blend for optimal growth. Let's set sail on the details of this aquatic agricultural ally. Pros: Oceanic offerings: Combining the best of both worlds, this fertilizer contains hydrolized fish and seaweed, providing your plants with an array of essential nutrients for healthy growth and development. Blossom bonanza: Neptune's Harvest Organic Fertilizer promotes vigorous root systems, abundant blossoms, and increased fruit production, making your garden a veritable paradise of productivity. Eco-friendly excellence: Sustainably sourced and organic, this fertilizer ensures you're not only nourishing your plants but also doing your part for Mother Earth. Versatile vitality: Suitable for a wide range of plants, from vegetables and fruits to flowers and shrubs, this fertilizer offers oceanic goodness for all your gardening needs. Cons: Pricey potion: Some users might find the cost of this fertilizer to be on the higher side. However, the exceptional results and bountiful harvest it delivers make it a worthy investment for any dedicated gardener. Aromatic adventure: Due to its organic, nutrient-rich composition, this fertilizer may have a strong, fishy odor. But fear not, for the smell is a small price to pay for the garden splendor that awaits! In conclusion, Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer is the sea's secret to garden glory, providing your plants with an oceanic elixir that promotes optimal growth and abundance. Embrace the power of this aquatic agricultural ally, and watch your garden transform into a flourishing haven of earthly delights!

## Frequently Bought Together

- Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1 (36 Ounce)
- Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 36 oz
- Neptune's Harvest Fish Fertilizer 2-4-1, 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.hr/products/1332115-neptunes-harvest-fish-and-seaweed-liquid-fertilizer-2-3-1](https://www.desertcart.hr/products/1332115-neptunes-harvest-fish-and-seaweed-liquid-fertilizer-2-3-1)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-04*