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If you are a nitrogen-based fertilizer user, this is your opportunity to reduce your fertilizer costs and ensure a reliable supply of fertilizer through a grower-owned cooperative! We invite you to become a part of the CALAMCO success story by investing in your future with a company that has proven itself to be a winner!

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CALAMCO is a California-based cooperative made up of over 900 grower-members from throughout California, as well as fertilizer dealers. Since its inception in 1957, CALAMCO shareholders have been enjoying the benefits their stock has entitled them.

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After founding The Best Fertilizers Co. in 1932, Lowell W. Berry had a vision to form California Ammonia Co. (CALAMCO) – a joint venture involving The Best Fertilizers Co. and a group of California farmers. CALAMCO was incorporated in 1957 for the principal purpose of manufacturing and selling...

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