Down to Earth Organic Garden Gypsum Calcium Sulfate, 5 lb

Good product - did everything it was supposed to do

Great product!

If you don't already know, gypsum is a must have amendment for growing in coco coir. The calcium and sulfur help displace and balance out the excessive sodium and potassium found in coco, and are in forms that are highly available to plants. It also doesn't affect the pH like other liming solutions do, and generally you don't want to raise the pH in coco any higher than it already is. This gypsum is pelletized to slow down and moderate how quick the the calcium and sulfur become available, which in these forms are very mobile and bioavailable to plants. As a result it can even be used as a top dressing and watered in.Disclaimer: I have used many Down to Earth products. Some things you can find much better deals on locally (Ie: buying big bags from local suppliers), but I have always found Down to Earth products to be high quality and have never been disappointed.

New to gardening

I mean there really ain't much to say about this. I use a really small amount to top dress my ornamental potted plants that are faster growing. I've seen no negatives. Comes in round little balls.

Great soil amendment

Nice packaging, good soil amendment

This product was easy to apply and did a surprisingly nice job helping to break up the soil. I'd recommend it.