Please Note: All Biodynamic Preparations are listed by OMRI in the Generic Materials List as follows -

Biodynamic Preparation
Status:Allowed
Class:Crop Management Tools and Production Aids
Origin:Nonsynthetic
Description:
Includes horn manure spray (500) horn silica (501), yarrow flowers (502), chamomile (503), stinging nettle (504), dandelion (506), valerian (507), and horsetail (equisetum)spray (508).

Please call or email for a copy of Products for Use in NOP Organic Farm Production.