7 Pa. Code § 71.2
The following words and terms, when used in this Chapter, shall have the following meanings, unless the context clearly indicates otherwise:
Act-The Pennsylvania Commercial Feed Law (3 P. S. § § 58.1-58.16) (Repealed).
Prohibited weed seeds-The seeds of perennial weeds such as not only reproduce by seed but also spread by underground roots, stems, and other reproductive parts, and which, when well established, are highly destructive and difficult to control in this Commonwealth ordinary good cultural practice.
Restricted weed seed-The seeds of such weeds as are very objectionable in fields, lawns, and gardens of this Commonwealth, but can be controlled by good cultural practices.
Secretary-The Secretary of Agriculture of the Commonwealth.
7 Pa. Code § 71.2