High purity, feed grade Calcium Carbonate processed from Oyster Shell, Clam Shell and Coral Calcium high in calcium and low in magnesium.
(verified owner) – November 10, 2021
Hard to come by product in our neck of the woods at a decent price
(verified owner) – February 12, 2022
Love this product! So grateful that Concentrates carries this, since it’s out of stock in my area. We’re using it to fertilize California Oak trees, it’s high quality and absorbs into the soil very well.
(verified owner) – March 17, 2022
I like that the Oyster Shell flour comes in smaller bags that are easier to handle
(verified owner) – April 9, 2022
first shot for me and i will rereview once I know the results of using this product.
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Toll Free: 800.388.4870
5505 SE International Way
Milwaukie, OR 97222
Business Office & Warehouse: