---
product_id: 180048831
title: "Copper Sulfate Fine Crystals 3lb Jar"
brand: "earthworks health llc"
price: "€ 68.84"
currency: EUR
in_stock: true
reviews_count: 7
url: https://www.desertcart.fr/products/180048831-copper-sulfate-fine-crystals-3lb-jar
store_origin: FR
region: France
---

# Home & Garden Chemical Purity USA Made Copper Sulfate Fine Crystals 3lb Jar

**Brand:** earthworks health llc
**Price:** € 68.84
**Availability:** ✅ In Stock

## Summary

> 🌟 Unlock Nature's Potential with Copper Sulfate!

## Quick Answers

- **What is this?** Copper Sulfate Fine Crystals 3lb Jar by earthworks health llc
- **How much does it cost?** € 68.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/180048831-copper-sulfate-fine-crystals-3lb-jar)

## Best For

- earthworks health llc enthusiasts

## Why This Product

- Trusted earthworks health llc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Convenience:** 3lb jar ensures you have enough for all your projects.
- • **Transform Your Space:** Elevate your gardening game with premium-grade copper sulfate!
- • **Eco-Friendly Solution:** Harness the power of nature with a product that's safe and effective.
- • **Quality You Can Trust:** Proudly made in the USA for superior quality and performance.
- • **Versatile Applications:** Perfect for both home and garden use, unleash your creativity!

## Overview

Copper Sulfate Fine Crystals in a 3lb jar are ideal for various home and garden applications. Made in the USA, these high-purity crystals offer an eco-friendly solution for your gardening needs.

## Description

Copper Sulfate Fine Crystals 3lb Jar

## Features

- CuSO4
- Bulk
- Great For Home or Garden Use
- USA Made
- Powder

## Product Details

- **Brand:** Earthworks Health LLC
- **Item Weight:** 1.36 Kilograms
- **Package Information:** Bottle
- **Item Form:** Powder
- **Manufacturer:** Earthworks Health LLC

## Images

![Copper Sulfate Fine Crystals 3lb Jar - Image 1](https://m.media-amazon.com/images/I/412HO2JrSwL.jpg)

## Questions & Answers

**Q: how much of the crystals do I use per month?**
A: this depends on what you are using it for.  If you plan on using for root control or algae control, please refer to our EPA labeled copper sulfate listings.  it is illegal for a company to claim those things on non EPA labeled copper sulfate.

**Q: Is this product for swimming pool algae?  the container shipped says “fine feed grade.**
A: NO ! Don't use this in your swimming pool.

**Q: i am trying to make a mix  called bourdeux sauce  (cooper sulfate and  quicklime) to fight fungus on my tree. Do you carry the quicklime as well?**
A: We do not

**Q: can i spray this on my garden to kill powdery mildew spores in the soil**
A: It will kill also many beneficial organisms in your soil. Use on leaves only.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 20 years of yellow mustard algae -- GONE and still GONE
*by E***L on April 17, 2025*

This is the same stuff in PoolRx (which is how I learned about copper sulfate, the PoolRx product works). Used appropriately like you do and should with any pool chemical, this is way cheaper and may be of lifetime supply as my 26,000 gallon pool barely needs any maybe once a year. I used to brush yellow mustard algae weekly if not daily and no use of Yellow Out or anything ever really got rid of it. PoolRx did and we're algae-free going on three years, it's just that I only use the copper sulfate if I see a hint of yellow. No need to buy PoolRx anymore (sorry for sharing your secret, I'm sure PoolRx has other qualities).

### ⭐⭐⭐⭐⭐ Kills plants
*by S***E on October 14, 2021*

I had a wisteria bush destroying a fence. Through a bunch of this on it and it was pretty much dead in 2 days. I finished off the wisteria bush with a little brush killer. This particular section of my yard I want nothing to ever grow

### ⭐⭐⭐⭐⭐ a great algae suppressant
*by G***E on September 9, 2021*

got this a replacement for liquid solution of copper sulphate.easy to use and no liquid to clean up later

## Frequently Bought Together

- Copper Sulfate Fine Crystals 3lb Jar
- Voluntary Purchasing Group Fertilome 33371 Horticultural Hydrated Lime, 5-Pound

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---

*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-02-15*