Crop Services International

Dr. Phil Wheeler
1718 Madison SE
Grand Rapids, MI 49507
Drdirt@cropservicesintl.comThis e-mail address is being protected from spam bots, you need JavaScript enabled to view it
CSI provides soil testing – including "plant available" – soil/crop recommendations, and a wide range of dry and liquid products used to remineralize soil/crops, rebuild beneficial microbial populations, and raise crop brix/increase nutrient levels. We have the best natural phosphate and potassium sulfate sources in the US considering availability of nutrients, lowest heavy metal levels and the best delivered cost to consumers. We ship overseas.

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