Top 30 Neptune's Harvest Garden Fertilizers on Amazon (Verified You can Buy)
Top 1
Best Garden Fertilizers
Best for Lawn
Best for Bottle
Best for Natural
Best for Organic
Best for Liquid
Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer 36 0z
Neptune's Harvest
FS136
4.0 x 4.0 x 9.0 inches
2.25 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Boon Sales | 4,095 | ✅ | ✅ | ✅ |
| DBDPet | 7,952 | ✅ | ✅ | ✅ |
| Scott Road Capital | - | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| PSB Retail | 7,256 | ✅ | ✅ | ✅ |
| Amazon.com | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Grow a beautiful vegetable garden
Flowers and foliage will be stronger and more colorful
Top 2
Neptune's Harvest FS136 32 Oz. Fish & Seaweed Blend Fertilizer 2-3-1
Neptune's Harvest
FS136
3.5 x 3.4 x 8.5 inches
2.25 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| CJ360 | - | ✅ | ✅ | ✅ |
| BEYOND YOUR HOME | 142 | ✅ | ✅ | ✅ |
| SLICK DEALS 4 ALL | - | ✅ | ✅ | ✅ |
| SellQor | 6,574 | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
| Premium Quality For You | - | ❌ | ❌ | ❌ |
Top 3
Neptune’s Harvest Organic Tomato & Vegetable Plant Fertilizer (2-4-2) - Liquid Plant Food w/Fresh Fish, Seaweed, Molasses, Yucca Extract, & Humic Acids - for Vegetable Garden (Gallon)
Neptune's Harvest
N17 TV191
6.5 x 6.5 x 11.0 inches
8.9949 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Derived for Maximum Growth: Neptune’s Harvest Natural Tomato & Vegetable Organic Fertilizer is a liquid plant food formulated for the critical "vegging" stage of tomatoes, vegetables, and houseplants; this liquid fertilizer enhances plant health, promotes vigorous foliage, and develops strong stems and roots; this fertilizer increases yield, supports healthy deep roots, and helps with big vegetation, healthier crops, especially for tomatoes and vegetables and is safe for kids and pets
Power of Natural Ingredients: This organic plant fertilizer combines fish, seaweed, molasses, humate, yucca extract, biological microbes, and liquid calcium to deliver essential nutrients like nitrogen, phosphorus, and potassium; it boosts root health, increases yield, enhances soil quality, and strengthens plants against disease, drought, and temperature stress; ideal for both indoor and outdoor plants, it promotes healthy growth in vegetable gardens, potted plants, and hemp crops
Top 4
Neptune’s Harvest Liquid Humate 12% Concentrate - Organic Soil Conditioner with Humic Acid - Improves Soil Structure & Fertilizer Efficiency - Ideal for Lawns, Gardens & More (Quart)
Neptune's Harvest
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Organic Soil Conditioner: Neptune’s Harvest Liquid Humate 12% Concentrate is an organic soil conditioner made from the richest deposits of ancient peat moss; this concentrated liquid is derived from humic acid, which improves soil structure and enhances nutrient uptake; by releasing essential plant nutrients locked in the soil, this humic acid for plants also provides moisture retention and boosts soil biological activity, ensuring your plants thrive naturally and is safe for kids and pets
Humic Acid for Plant Health: The active ingredient, humic acid, is extracted from ancient peat moss that has decomposed for over a million years; soil conditioner for gardening provides valuable elements that enhance soil health by releasing locked-up nutrients and improving soil texture; it also supports the living organisms in the soil, making it a vital component for healthier plants; this soil revitalizer enriches the soil, ensuring plants receive the nutrients they need for robust growth
Top 5
Best for Bottle
Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz Pint - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns
Neptune's Harvest
FS118
3.0 x 3.0 x 7.0 inches
1.125 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
| Amazon.com | - | ❌ | ❌ | ❌ |
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
Top 6
Neptune's Harvest Fish
Neptune's Harvest
HF136
3.5 x 7.5 x 8.3 inches
2.46 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Best WH | 6,801 | ✅ | ✅ | ✅ |
| Moofin | 1,951 | ✅ | ✅ | ✅ |
| G.D.W. | 2,695 | ❌ | ❌ | ❌ |
Features
Grow A Beautiful Vegetable Garden
Provides All The Benefits Of Kelp And Liquid Fish Fertilizers Combined
Top 7
Neptune's Harvest Seaweed Fertilizer 0-0-1 (36 Ounce)
Neptune's Harvest
SW118
3.5 x 3.5 x 8.75 inches
2.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Jamlyn-Supply | 921 | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Boon Sales | 4,095 | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Neptune's Harvest seaweed plant food is made from seaweed (ascophyllum nodosum)
Sourced from north Atlantic ocean
Top 8
Best for Liquid
Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 36 oz
Neptune's Harvest
TV136
4.0 x 4.0 x 10.0 inches
2.2487 Pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Hearthshire | 77 | ✅ | ✅ | ✅ |
| SRTCLB Productions | - | ✅ | ✅ | ✅ |
| Grow It Naturally | - | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Increases Vigor And Volume Of Tomatoes And Vegetables
Ideal For Vegetables, Trees, Shrubs And Flowers
Top 9
Best for Bag
Neptune's Harvest Crab & Lobster Shell, 4 lb
Neptune's Harvest
CS604
7.0 x 6.0 x 4.0 inches
3.9904 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Jamlyn-Supply | 921 | ✅ | ✅ | ✅ |
| Moofin | 1,951 | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Amazon.com | - | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Crab & Lobster Shell will keep your lawn healthy and green
It will also help with nematode and fungus problems
Top 10
Best for Natural
Neptune's Harvest Natural Tomato & Vegetable Organic, OMRI Plant Food 18 oz Concentrate
Neptune's Harvest
TV118
3.0 x 3.0 x 6.0 inches
1.1244 Pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Sweetner | 2,090 | ✅ | ✅ | ✅ |
| Amazon.com | - | ✅ | ✅ | ✅ |
| The Positive Shop | - | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
ORGANIC - OMRI Tomato & Vegetable plant food
FOR BEST RESULTS - Use when plant is growing, before vegetable budding appear
Top 11
Neptune's Harvest Fish & Seaweed Fertilizer 2-3-1 (Gallon)
Neptune's Harvest
FS191
6.0 x 6.0 x 12.0 inches
10.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Grow It Naturally | - | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Grow a beautiful vegetable garden
Flowers and foliage will be stronger and more colorful
Top 12
Best for Bag
Neptune’s Harvest Organic Crab & Lobster Shell Multi-Purpose Plant Food (5-3-0) - 12 LB Resealable Bag - Rich in Nutrients Soil Fertilizer - Plant Food for Lawns, Gardens, and Vegetables
Neptune's Harvest
CS612
11.0 x 9.0 x 11.0 inches
11.9909 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Combined for Maximum Growth: Neptune’s Harvest Organic Crab & Lobster Shell fertilizer is an excellent dry organic plant food made from natural crab and lobster shell meal; this organic fertilizer supports lawns, garden beds, bulbs, indoor and outdoor plants and vegetables by supplying calcium, magnesium, and nitrogen that work with soil to support long-term soil health and steady performance throughout the growing season and is safe for kids and pets
Power of Crab & Lobster Shell: Crafted entirely from crab and lobster shell meal, this organic plant fertilizer contains 17–23% calcium and 1.3–1.7% magnesium and is naturally high in chitin (kite-en); this mineral-rich profile supports soil nutrition while also helping control root nematodes, grubs, ants, slugs, and fungus, making it a dependable choice for gardeners managing soil conditions organically
Top 13
Neptune's Harvest Rose & Flowering Fertilizer (2-6-4) - 1 Gallon - Organic Liquid Rose Food for Vibrant Blooms & Growth - Promotes Healthy Foliage - Ideal Fertilizer for Indoor & Outdoor Use
Neptune's Harvest
N17 RF191
6.5 x 6.5 x 11.0 Inches
8.1791 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
| Amazon.com | - | ❌ | ❌ | ❌ |
Features
Boosts Flowering Power: Neptune's Harvest Rose & Flowering Fertilizer (2-6-4 NPK formula) promotes strong root development and vibrant flower production. This organic liquid fertilizer increases bud density and volume, ensuring beautiful blooms. Ideal for roses and flowering plants, it’s perfect for hemp when used with Tomato & Veg fertilizer. It helps raise Brix (sugars), which keeps insects away, promoting healthy, robust flowers without pests, and is safe for kids and pets
Made from Natural Ingredients: This organic fertilizer is crafted from fish, seaweed, molasses, humic acids, yucca extract, biological microbes, and liquid calcium; it delivers essential nutrients for healthy growth and vibrant blooms; this organic plant food is perfect for both indoor and outdoor plants
Top 14
Neptune's Harvest Organic Plant Food | Fertilizer for Lawn & Garden | Crab & Lobster Shell 5-3-0 (4 lb) + Kelp Meal 1-0-2 (4 lb)
Neptune's Harvest
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Combine for Maximum Growth: Pair Neptune's Harvest Crab and Lobster Shell Plant Food with the Kelp Meal to supercharge your garden! This dynamic duo boosts soil health by adding organic matter, enhancing moisture retention, and delivering essential nutrients; Strengthen roots, promote vibrant growth, and build a resilient garden foundation - give your plants the ultimate support they need to thrive!
Power of Crab & Lobster Shell: Looking for a natural way to keep your lawn and garden lush and healthy? Crab and Lobster Shell Plant Food is your eco-friendly solution! Packed with 17% calcium to strengthen cell walls, 1% magnesium for better photosynthesis, and an NPK ratio of 5-3-0, it nourishes soil, boosts roots, and combats nematodes and fungi; OMRI Certified, it’s a safe, nutrient-rich blend for thriving plants and a vibrant garden!
Top 15
Neptune's Harvest Organic Plant Fertilizer | Liquid Fertilizer for Lawn, Garden & Houseplant | Rich in Essential Nutrients | Hydrolyzed Fish 2-4-1 (Quart) + Tomato & Veg Plant Food 2-4-2 (Quart)
Neptune's Harvest
4.5 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Sebago Distribution | 1,097 | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Combine for Maximum Growth: Pair Neptune’s Harvest Hydrolyzed Fish Fertilizer with the Tomato & Veg Plant Fertilizer for exceptional plant vitality! This dynamic duo of organic fertilizer for vegetables delivers a potent mix of nutrients, enhancing root strength, improving nutrient uptake, and enriching soil health; This combination ensures flourishing plants with strong growth, radiant blooms, and plentiful harvests, supporting your garden's natural vitality and sustainability!
Organic Nutrients for Hydrolyzed Fish: This Hydrolyzed Fish Fertilizer for plants is an organic fertilizer crafted from fresh North Atlantic fish using a unique cold process that preserves vital vitamins, amino acids, enzymes, and growth hormones; Packed with all the micro and macro nutrients naturally found in fish, this organic fertilizer nourishes plants effectively! Unlike fish emulsions, this retains beneficial fish proteins and oils without the unpleasant odor!
Top 16
Neptune's Harvest Fish Fertilizer 2-4-1, Gallon
Neptune's Harvest
HF191-1
6.0 x 6.0 x 12.0 Inches
9.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Grace Street Commerce | - | ✅ | ✅ | ✅ |
| Evenu | 2,007 | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
An organic fertilizer made from fresh North Atlantic fish
Made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones
Top 17
Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 5 Gallon Pail - Plant Food for Garden - Indoor & Outdoor Organic Plant Fertilizer for Vegetables, Flowers, Fruit, Trees & Lawns
Neptune's Harvest
FS150
12.5 x 12.5 x 14.75 Inches
0.9063 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| UnbeatableSale, Inc | 114 | ❌ | ❌ | ❌ |
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
Top 18
Neptune’s Harvest Seaweed Plant Food (0-0-1) - Multi-Purpose Seaweed Organic Liquid Fertilizer - Indoor & Outdoor Plant Fertilizer for Lawns, Gardens, Vegetables, & Flowers (Gallon)
Neptune's Harvest
NEPSW191
6.0 x 6.0 x 12.0 inches
8.5 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Derived for Maximum Growth: Neptune’s Harvest Organic Seaweed Plant Food is an organic seaweed liquid fertilizer made from Ascophyllum Nodosum seaweed (Norwegian kelp) in liquid form, harvested from cold North Atlantic waters; this liquid fertilizer acts as a natural storehouse of over 60 nutrients, amino acids, trace minerals, and natural growth promoters, making it suitable for both indoor & outdoor plants including houseplants, vegetables, flowers, and lawns and is safe for kids and pets
Power of Seaweed Nutrients: This organic seaweed plant food provides naturally occurring nutrients and amino acids that support plant hardiness, stress recovery, and overall plant performance; formulated as a 0-0-1 seaweed liquid fertilizer, it supplies potassium while remaining OMRI Listed, making this organic seaweed liquid fertilizer a dependable choice for routine plant feeding
Top 19
Neptune's Harvest Fish Fertilizer 2-4-1, 36 Ounce
Neptune's Harvest
HF136
3.5 x 3.5 x 8.75 Inches
2.25 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Scott Road Capital | - | ✅ | ✅ | ✅ |
| Monster Pets | 145 | ✅ | ✅ | ✅ |
| Colorado's Choice | - | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Neptune's Harvest is an organic fertilizer made from fresh north Atlantic fish
It is made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones
Top 20
Neptune's Harvest Organic Plant Fertilizer | Liquid Fertilizer for Lawn, Garden & Houseplant | Rich in Essential Nutrients | Tomato & Veg 2-4-2 (Quart) + Fish & Seaweed Plant Food 2-3-1 (Quart)
Neptune's Harvest
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Combine for Maximum Growth: Pair Neptune’s Harvest Tomato & Veg Plant Fertilizer with the Fish & Seaweed Fertilizer for exceptional plant health! This powerful combination of organic plant food strengthens roots, enhances nutrient absorption, and boosts soil health; promoting lush foliage, vibrant flowers, and productive vegetables while supporting healthy, sustainable growth throughout the season
Organic Nutrients for Tomatoes & Veg: This Tomato & Veg Plant Fertilizer is a 2-4-2 natural fertilizer made from fish, seaweed, molasses, yucca extract, and humic acids; designed to nourish plants during their active growth stages; this eco-friendly formula promotes strong roots, lush foliage, and healthier, more productive plants
Top 21
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 (Pint)
Neptune's Harvest
HF118
1.0 x 1.0 x 1.0 inches
1.1244 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
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
Top 22
Neptune's Harvest Rose & Flowering 2-6-4 Pint
Neptune's Harvest
RF118
1.1244 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Ground Growth | - | ✅ | ✅ | ✅ |
| Colorado's Choice | - | ✅ | ✅ | ✅ |
| Sweetner | 2,090 | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Better yields, health and growth.
Helps soils retain nutrients & water.
Top 23
Neptune's Harvest TF191 Turf Fertilizer, 9 LB
Neptune's Harvest
TF191
6.5 x 6.5 x 12.0 Inches
9.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ICB. | 408 | ✅ | ✅ | ✅ |
| Colorado's Choice | - | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Specifically designed for use on turf grass
Provides necessary nutrients for tolerating environmental conditions such as high temperature and drought
Top 24
Neptune’s Harvest Organic Kelp Meal Plant Food (1-0-2) - 12 lb Resealable Bag - Multi-Purpose Seaweed Fertilizer - Indoor & Outdoor Plant Fertilizer for Lawns, Gardens, Vegetables & Bulbs
Neptune's Harvest
KM612
11.0 x 9.0 x 11.0 inches
11.5 Pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
| Monster Pets | 145 | ❌ | ❌ | ❌ |
Features
Derived for Maximum Growth: Neptune’s Harvest Organic Kelp Meal is a dry fertilizer made from Ascophyllum Nodosum (Norwegian kelp), designed as an all-purpose plant food; this kelp meal fertilizer adds organic matter, trace minerals, and essential nutrients to soil, enhancing the growth of vegetables, flowers, lawns, and other plants; perfect for improving soil health and promoting robust growth throughout the growing season and is safe for kids and pets
Power of Kelp Meal: This kelp meal plant fertilizer contains essential trace minerals, including natural plant growth hormones, that roots need to develop strong and healthy; as an organic plant fertilizer and sea kelp fertilizer, it supports strong root systems, helps soil drain yet retain moisture, and enhances plant vitality, making it ideal for vegetable gardens, flower beds, lawns, and other plants
Top 25
Neptune’s Harvest Seaweed Plant Food (0-0-1) - Multi-Purpose Seaweed Organic Liquid Fertilizer - Indoor & Outdoor Plant Fertilizer for Lawns, Gardens, Vegetables, & Flowers (Pint)
Neptune's Harvest
SW118
3.5 x 3.5 x 8.75 inches
1.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Derived for Maximum Growth: Neptune’s Harvest Organic Seaweed Plant Food is an organic seaweed liquid fertilizer made from Ascophyllum Nodosum seaweed (Norwegian kelp) in liquid form, harvested from cold North Atlantic waters; this liquid fertilizer acts as a natural storehouse of over 60 nutrients, amino acids, trace minerals, and natural growth promoters, making it suitable for both indoor & outdoor plants including houseplants, vegetables, flowers, and lawns and is safe for kids and pets
Power of Seaweed Nutrients: This organic seaweed plant food provides naturally occurring nutrients and amino acids that support plant hardiness, stress recovery, and overall plant performance; formulated as a 0-0-1 seaweed liquid fertilizer, it supplies potassium while remaining OMRI Listed, making this organic seaweed liquid fertilizer a dependable choice for routine plant feeding
Top 26
Neptune's Harvest TV136 Tomato & Veg Formula Fertilizer, 36 oz (Тwo Рack)
Neptune's Harvest
TV136
4.4974 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Sweetner | 2,090 | ✅ | ✅ | ✅ |
| SWIFTCHOICE | 7,555 | ✅ | ✅ | ✅ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Neptune's Harvest TV136 Tomato & Veg Formula Fertilizer, 36 oz
This is a perfect complete fertilizer for your tomatoes, vegetables and more.
Top 27
Neptune's Harvest Organic Plant Fertilizer | Liquid Fertilizer for Lawn, Garden & Houseplant | Rich in Essential Nutrients | Rose & Flowering 2-4-2 (Quart) + Fish & Seaweed Plant Food 2-6-4 (Quart)
Neptune's Harvest
4.5 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Sebago Distribution | 1,097 | ❌ | ❌ | ❌ |
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Combine for Maximum Growth: Pair Neptune’s Harvest Rose & Flowering Plant Fertilizer with the Fish & Seaweed Fertilizer for enhanced plant vitality! This powerful combination of organic plant food strengthens roots, improves soil health, and promotes vibrant blooms; boosting flower production, enhancing foliage, and ensuring robust plant growth for beautiful, long-lasting flowers and healthy, resilient plants throughout the growing season
Organic Nutrients for Roses & Flowers: This Rose & Flowering Plant Fertilizer is a 2-6-4 natural fertilizer made from fish, seaweed, and other organic ingredients; Designed to promote vibrant blooms and robust plant health, this eco-friendly formula boosts flower production and strengthens plants during all stages of growth
Top 28
Neptune'S Harvest Sw118 16 Oz. Seaweed Plant Food 0-0-1
Neptune's Harvest
1198415
2.75 x 2.75 x 7.0 Inches
1.1 Pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| SGHP | 1,915 | ❌ | ❌ | ❌ |
Features
Sold on Amazon
Top 29
Neptune's Harvest Liquid Crab & Lobster Shell (Pint)
Neptune's Harvest
2.75 x 2.75 x 7.0 inches
1.1244 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Flowers and Vegetables: 1 oz. per gallon of water. Foliar feed every 1-2 weeks, early in the morning. Once flowers or buds appear, soil drench only
Clones and Transplants: Dip roots in solution of 1 oz. per gallon of water, for 5 seconds, before planting. Use 1 oz . per gallon if water every 3 days, until well established
Top 30
Neptune’s Harvest Lawn Starter Fertilizer (2-3-2), 1 Gallon - Liquid Lawn Fertilizer - Starter Fertilizer for Grass Seed - Improves Vigor, Color & Root Density for New Lawns
Neptune's Harvest
LS191
9.0 pounds
Ratings for Neptune's Harvest (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Neptune's Harvest | - | ❌ | ❌ | ❌ |
Features
Derived for Maximum Growth: Neptune’s Harvest Lawn Starter Fertilizer 2-3-2 is a liquid fertilizer that promotes root development and vibrant growth in new lawns and is safe for kids and pets; formulated with phosphorus, this organic fertilizer is essential for newly seeded lawns, helping to enhance root density and improve soil quality; with fish and seaweed as the base, it delivers natural micronutrients and minerals for healthy growth and grass color, even in high heat or drought conditions
Power of Fish and Seaweed: This liquid fertilizer for lawns combines fish, seaweed, molasses, humate, yucca extract, biological microbes, and liquid calcium to provide a rich supply of essential nutrients; the high-energy mix promotes healthy root systems, enhances soil structure, and helps soil drain yet retains moisture; ideal for newly seeded or repaired lawns, this liquid lawn fertilizer ensures robust growth and resilience, while feeding soil biology for long-term lawn health
Top 10 Neptune's Harvest Garden Fertilizers - Verified to Buy (September 2026)
- 1. Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer 36 0z
- 2. Neptune's Harvest FS136 32 Oz. Fish & Seaweed Blend Fertilizer...
- 3. Neptune’s Harvest Organic Tomato & Vegetable Plant Fertilizer (2-4-2) -...
- 4. Neptune’s Harvest Liquid Humate 12% Concentrate - Organic Soil Conditioner...
- 5. Neptune's Harvest Fish & Seaweed Liquid Fertilizer (2-3-1) - 18oz...
- 6. Neptune's Harvest Fish
- 7. Neptune's Harvest Seaweed Fertilizer 0-0-1 (36 Ounce)
- 8. Neptune's Harvest Tomato & Veg Fertilizer 2-4-2, 36 oz
- 9. Neptune's Harvest Crab & Lobster Shell, 4 lb
- 10. Neptune's Harvest Natural Tomato & Vegetable Organic, OMRI Plant Food...
Related Neptune's Harvest Garden Fertilizers Guides
For more personalized Neptune's Harvest Garden Fertilizers guides, Check those pages,
Featured Brands
Top 10 Neptune's Harvest Garden Fertilizers Sellers: CPR Seller Rank List
CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.
- 1. Hearthshire : 348,312 Yearly Feedback , Avg. Ratings 4.7
- 2. UnbeatableSale, Inc : 268,229 Yearly Feedback , Avg. Ratings 4.7
- 3. BEYOND YOUR HOME : 223,444 Yearly Feedback , Avg. Ratings 4.9
- 4. Monster Pets : 220,733 Yearly Feedback , Avg. Ratings 4.9
- 5. ICB. : 99,160 Yearly Feedback , Avg. Ratings 4.9
- 6. Jamlyn-Supply : 53,727 Yearly Feedback , Avg. Ratings 4.9
- 7. Sebago Distribution : 47,159 Yearly Feedback , Avg. Ratings 4.9
- 8. SGHP : 30,204 Yearly Feedback , Avg. Ratings 4.4
- 9. Moofin : 29,788 Yearly Feedback , Avg. Ratings 4.8
- 10. Evenu : 29,034 Yearly Feedback , Avg. Ratings 4.9
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | Hearthshire | 348,312 | 4.7 |
| 🥈 | UnbeatableSale, Inc | 268,229 | 4.7 |
| 🥉 | BEYOND YOUR HOME | 223,444 | 4.9 |
| 4 | Monster Pets | 220,733 | 4.9 |
| 5 | ICB. | 99,160 | 4.9 |
| 6 | Jamlyn-Supply | 53,727 | 4.9 |
| 7 | Sebago Distribution | 47,159 | 4.9 |
| 8 | SGHP | 30,204 | 4.4 |
| 9 | Moofin | 29,788 | 4.8 |
| 10 | Evenu | 29,034 | 4.9 |
[Get] Neptune's Harvest Garden Fertilizers Deals (✅Exclusively for Prime)
What does "Amazon Fulfilled" Mean?
Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.
When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.
What does "Prime" Mean?
"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.
Prime members also have access to other benefits, including 2-Day Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime Gaming, and more.
Shop Prime Neptune's Harvest Garden Fertilizers Deals
What does "Free Shipping" Mean?
"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.
Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.
Why Should You Trust Us?
Now hundreds and thousands of Gardening supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best Neptune's Harvest Garden Fertilizers to buy for new September 2026?
CherryPicks’s Methodology for Evaluating Neptune's Harvest Garden Fertilizers
We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Gardening items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.
Then our expert-level editors reviewed all those quality items and selected the top 30 Neptune's Harvest Garden Fertilizers for you, We have researched hundreds of sellers and picked the top sellers for Gardening, including Amazon Resale, Hearthshire, UnbeatableSale, Inc, BEYOND YOUR HOME, Monster Pets, ICB., Jamlyn-Supply, Sebago Distribution, SGHP, Moofin, Evenu And Sweetner. The Neptune's Harvest Organic Hydrolized Fish & Sea... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 7,045 consumers with an average rating of 4.7.
We've helped a lot of satisfied users get the right Patio, Lawn & Garden product based on their needs, and save lots of time for them to pick Neptune's Harvest Garden Fertilizers to buy.
Ben Broadby runs a local garden clearing service and has got over 7 years of experience doing this and putting a smile on the faces of garden owners in his locality. He wants to share all he has learned with us over the years