---
product_id: 32963292
title: "Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, and Lawns"
brand: "neptune's harvest"
price: "¥21681"
currency: JPY
in_stock: true
reviews_count: 13
category: "Neptune's Harvest"
url: https://www.desertcart.jp/products/32963292-neptunes-harvest-fish-and-seaweed-liquid-fertilizer-2-3-1
store_origin: JP
region: Japan
---

# 25% seaweed extract boosts plant vitality & resilience 75% hydrolyzed fish protein for nutrient-rich feeding Liquid formula for fast absorption & easy application Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, and Lawns

**Brand:** neptune's harvest
**Price:** ¥21681
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into the ocean’s secret for lush, vibrant gardens that everyone will envy!

## Quick Answers

- **What is this?** Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, and Lawns by neptune's harvest
- **How much does it cost?** ¥21681 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/32963292-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 Champion:** Feeds beneficial microbes and improves soil structure for long-term garden vitality.
- • **Effortless Application:** Just 1 oz per gallon—foliar spray or soil drench—fits seamlessly into your busy lifestyle.
- • **Eco-Conscious Gardening:** OMRI listed, carbon sequestering, and pet-safe for guilt-free, sustainable plant care.
- • **Versatile Growth Booster:** Ideal for veggies, flowers, fruits, lawns, and indoor plants—one bottle, endless garden glory.
- • **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 organic plant food combining 75% hydrolyzed fish protein and 25% seaweed extract in a fast-absorbing liquid form. Designed for indoor and outdoor use, it promotes robust root development, vibrant blooms, and improved soil health while being safe for kids and pets. OMRI certified and sustainably sourced, this 1-gallon fertilizer supports balanced growth across vegetables, flowers, fruits, and lawns with easy, efficient application.

## Description

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

Review: Great fertilizer - fishy smell - This is a great fertilizer. Some people don’t like to use this inside because of the slight fishy smell. As for me, It is worth it.
Review: Oceanic Elixir for Earthly Abundance: The Sea's Secret to Garden Glory! - 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!

## 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) - 1 Gallon Bottle (Pack of 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IS780Y |
| Best Sellers Rank | #995 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #47 in Garden Fertilizers |
| Brand | Neptune's Harvest |
| Brand Name | Neptune's Harvest |
| Coverage | Medium |
| Customer Reviews | 4.7 out of 5 stars 7,126 Reviews |
| Global Trade Identification Number | 00081435240094, 00781147946030 |
| Included Components | Product |
| Item Form | Liquid |
| Item Type Name | Hydrolized Fish & Seaweed |
| Item Weight | 10 Pounds |
| Liquid Volume | 3784 Milliliters |
| Manufacturer | Neptune's Harvest |
| Mixing Ratio | 1 ounce per gallon |
| Model Number | FS191 |
| Number of Items | 1 |
| Part Number | FS191 |
| Specific Uses For Product | Plant Growth, Root Development, Seed Development, Soil Conditioning |
| Target Species | plants |
| UPC | 781147946030 081435240094 745682292878 |
| Unit Count | 128 Fluid Ounces |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Neptune's Harvest
- **Item Form:** Liquid
- **Item Weight:** 10 Pounds
- **Liquid Volume:** 3784 Milliliters
- **Specific Uses For Product:** Plant Growth, Root Development, Seed Development, Soil Conditioning

## Images

![Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, and Lawns - Image 1](https://m.media-amazon.com/images/I/71bkx0dbtUL.jpg)
![Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 1 Gallon Bottle - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, and Lawns - Image 2](https://m.media-amazon.com/images/I/81ZP5zYcx3L.jpg)

## Available Options

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

## Questions & Answers

**Q: how often to apply**
A: Directions for Fish, Blend and Seaweed LiquidsDirections: Shake well before using. Prepare for one application only. Do not store diluted fertilizer.House Plants: Use 1 tablespoon per gallon of water. Feed every 2-3 weeks. Do not over water.Outdoor Plants: Use 1/8 Cup (1 fl. Oz.- 1:128) pergallon of water. Feed vegetables, flowers, trees and shrubs every 2-3 weeks. Apply until soil is saturatedor as a foliar feed until leaves are wet, top & bottom.It is best to foliar feed early or late in the day.Lawns: Use 1 gallon concentrate mixed with sufficient water to cover 8000 sq. ft. Feed monthly during growing season and again in the fall.Compost Enhancer: Use ¼ Cup (2fl. Oz.) per gallonof water every 2-3 weeks.Seed Germination: Soak in solution of 1 teaspoon percup of water.Caution: Keep out of reach of children. Do not takeinternally.

**Q: what is the shelf life**
A: From the manufacturer's website FAQ - Our liquid fertilizers have an indefinite shelf-life, until water is added. Always shake well before use. The longer the product is stored, the better you'll have to shake it up.

**Q: I like the looks of the reviews but, the smell wouldn't bother me if it works, will it attract bears and raccoons?**
A: This is the hydrolyzed fish and seaweed Mix. It doesn't smell bad when you first mix it up, just be sure to use it all at one time. I mean make small batches like a gallon at a time or quart. Use it all don't let it sit in a container. It then will stink! I haven't had any problems with wildlife. The only thing that might attract is flies.

**Q: Where does the fish come from? I am trying to avoid pacific fish because of the Japanese power plant melt-down**
A: This is what it says on the bottle and their website:  "Neptune's Harvest is a division of Ocean Crest Seafoods Inc., established in 1965 as a wholesale fish and seafood company. Still today, our Neptune's Harvest Organic Fertilizer gets made from fresh caught North Atlantic fish right on the docks of Gloucester, MA. Unlike a fish emulsion,our fertilizers are produced using a unique cold process "without cooking out all the good stuff". Best of all, it works great on everything that grows!"So it's a Massachusetts fishing industry byproduct! :)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great fertilizer - fishy smell
*by P***L on May 19, 2026*

This is a great fertilizer. Some people don’t like to use this inside because of the slight fishy smell. As for me, It is worth it.

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐⭐ Made my Garden Gorgeous
*by L***M on March 26, 2024*

I am absolutely thrilled with Neptune's Harvest Fish & Seaweed Fertilizer! This gallon-sized bottle of liquid gold has transformed my flowers and vegetable gardens into lush, thriving paradises. Let's start with the results. Since incorporating this fertilizer into my gardening routine, the difference in my plants' growth and productivity has been nothing short of astounding. My flowers are bursting with vibrant colors, and my vegetable garden is yielding an abundance of healthy, delicious produce. From tomatoes to zucchinis, everything seems to be thriving like never before. What sets this fertilizer apart is its natural and sustainable formulation. Made from a blend of fish and seaweed, it provides a rich source of nutrients that are essential for plant growth. The 2-3-1 NPK ratio ensures a balanced diet for my plants, promoting strong root development, vigorous foliage growth, and prolific flowering and fruiting. I also appreciate the convenience of the liquid form. It's easy to apply with a watering can or spray bottle, and it's quickly absorbed by the plant's roots, delivering nutrients where they're needed most. There's no need to worry about measuring or mixing; simply dilute as directed and watch your garden thrive. Another fantastic aspect of Neptune's Harvest is its versatility. Not only is it suitable for flowers and vegetables, but I've also used it on my lawn, shrubs, and even indoor plants with fantastic results. It's truly a one-stop solution for all my gardening needs. And let's not forget about the environmental benefits. Neptune's Harvest is derived from sustainable sources and is safe for use around children, pets, and wildlife. Knowing that I'm nourishing my garden in a responsible and eco-friendly way gives me peace of mind. In conclusion, Neptune's Harvest Fish & Seaweed Fertilizer has exceeded my expectations in every way. Its natural formulation, exceptional results, and ease of use make it a garden essential that I can't recommend highly enough. If you want to take your garden to the next level and enjoy bountiful harvests and beautiful blooms, look no further than Neptune's Harvest.

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-06*