Do you know in what way this is different from neptune's harvest sw136 organic seaweed plant food?

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.

Whats the difference between buying this and buying the neptune's harvest organic hydrolized fish & seaweed fertilizer ?

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 .

Best way to apply product? Anyway to attach to a hose?

For small areas use a watering can. For larger areas dilute with about 1/4-12 water and spray with a hose end sprayer.

Would this product be too "rich", or even inappropriate for young, recently planted Red Maple trees ?

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.

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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 (Quart)

Product ID: 2620934

Details

Brand
Neptune's
Item Form
Liquid
Item Weight
2.25 Pounds
Liquid Volume
3784
Specific Uses For Product
Shade Shade

🌊Cold-processed North Atlantic fish

🌱2-4-1 NPK ratio for balanced growth

⚗️Rich in vitamins, amino acids & enzymes

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VT12654

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Details

Brand
Neptune's
Item Form
Liquid
Item Weight
2.25 Pounds

Description

🌿 Unlock Ocean-Powered Growth — Your Plants’ Secret Weapon!

SOIL HEALTH BOOSTER - Feeds beneficial microbes, improves soil structure, moisture retention, and long-term fertility.
VERSATILE APPLICATION - One ounce per gallon works as soil drench or foliar feed—perfect for indoor & outdoor greenery.
PET KID SAFE FORMULA - Organic, OMRI listed, and naturally deters pests—grow with confidence and care.
COMPLETE ORGANIC NUTRITION - Beyond NPK—micronutrients, omega oils, and trace elements fuel nutrient-dense, vibrant plants.
NATURES NUTRIENT POWERHOUSE - Cold-process preserves vital growth hormones & enzymes for maximum plant vitality.

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 NPK ratio enriched with vitamins, amino acids, enzymes, and omega oils to boost plant growth, improve soil health, and enhance nutrient density. Safe for indoor and outdoor use, this OMRI-listed fertilizer supports a wide range of plants while naturally deterring pests and promoting sustainable gardening.

Specifications

ASIN	B0012Q2TFA
Best Sellers Rank	#3,650 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #162 in Garden Fertilizers
Brand	Neptune's Harvest
Brand Name	Neptune's Harvest
Coverage	Medium
Customer Reviews	4.7 out of 5 stars 2,963 Reviews
Global Trade Identification Number	00081435036123
Included Components	Neptune's Harvest Fish Fertilizer Quart
Item Form	Liquid
Item Type Name	Fish Fertilizer
Item Weight	2.25 Pounds
Liquid Volume	3784 Milliliters
Manufacturer	Neptune's Harvest
Mixing Ratio	2-4-1
Model Number	HF136
Part Number	HF136
Specific Uses For Product	Shade,Shade Protector
Target Species	Fish
UPC	081435036123 190283017229
Unit Count	36.0 Ounce

Reviews

A**R

21.07.2025

M**O

6.01.2025

D**J

26.03.2026

M**X

26.12.2025

B**N

8.12.2023

A**O

10.02.2026

G**.

26.04.2025

Z**S

24.02.2025

J**A

10.06.2025

R**Y

13.08.2025

U**C

20.02.2026

R**R

26.10.2021

J**F

28.07.2023

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