7 Pa. Code § 73.10
No person may distribute in this Commonwealth any type of fertilizer in bulk unless the bulk distribution container is properly labeled with all of the following information:
(3) The guaranteed analysis showing the precentage of plant food claimed, in the following format:
The provisions of this § 73.10 adopted July 28, 1972, effective July 29, 1972, 2 Pa.B. 1435.