7 CFR § 29.3121
Rule 18
July 6, 2020
Any lot of tobacco containing 20 percent or more of green leaves, or any lot which is not crude but contains 20 percent or more of green and crude combined, shall be designated by the color symbol “G” in the X, C, and M groups and the combination color symbol “GF” and “GR” in the B and T groups.
[55 FR 40645, Oct. 4, 1990]