97% Pure Gypsum Powder, 1 lb – High Solubility Calcium Sulfate Dihydrate for Soil, Gardens, Lawns, and Mushroom Substrate

This gypsum powder worked great for my avocado trees. I have a few of them in large planters. They were all getting lots of brown leaves, despite plenty of water and not too much sun. After searching online I found that a common issue in planters is salt buildup, and that a good way to fix this is to mix gypsum powder into the soil. I looked at a few brands on Amazon and this one had good reviews and a reasonable price. It worked great for my avocados. I mixed a few cups of powder into the topsoil in each planter. It's a very fine power so it mixes easily and washes into the soil with normal watering. After a few weeks my trees looked a lot better. They dropped the brown leaves and got a lot of fresh new green growth, and have been thriving since. So, I think the salt buildup really was the problem in my case and the gypsum powder cleared it up.

High quality and easy to use. Plants love it.

Works well on yukas

Excellent product.

Works great for fungus

I’m using gypsum to break up clay soil, and it takes more than a few weeks to see results. Asking for a review at this time is inappropriate.

I recently started using gypsum powder in my garden, and I'm pretty impressed. It's way cheaper than other soil amendments I've tried. I noticed a real difference in my plants' growth, especially my tomatoes. They seem healthier and more productive. The powder is easy to mix into the soil, and it doesn't have a strong smell. Plus, it's a natural product, so I feel good about using it. I'd definitely recommend giving it a try if you're looking to improve your soil.

It is pricey and most people wouldn't buy and use like I do. If I am going to go to all the work to eliminate heavy metal and other stuff. Why use mined gypsum.

Although a very good product, the delay in shipping was annoying