1. Short title This Act may be cited as the Protecting Lands Against Narcotics Trafficking Act of 2018 or the PLANT Act of 2018 . 2. Controlled Substances Act penalty amendments (a) Cultivating or manufacturing controlled substances on Federal property (1) In general Section 401(b)(5) of the Controlled Substances Act ( 21 U.S.C. 841(b)(5) ) is amended, in the matter preceding subparagraph (A), by striking as provided in this subsection and inserting , except as provided in paragraph (8), for not more than 10 years, in addition to any other term of imprisonment imposed under this subsection . (2) Penalty enhancement for cultivating marihuana on Federal property Section 401(b) of the Controlled Substances Act ( 21 U.S.C. 841(b) ) is amended by adding at the end the following: (8) Cultivating marihuana on Federal property Any person who violates subsection (a) by cultivating marihuana on Federal property shall, in addition to any other term of imprisonment imposed under this subsection, be imprisoned— (A) in the case of 1 or more marihuana plants, not less than 2 years and not more than 5 years; (B) in the case of 50 or more marihuana plants, not less than 5 years and not more than 10 years; (C) in the case of 100 or more marihuana plants, not less than 10 years and not more than 40 years; or (D) in the case of 1000 or more marihuana plants, not less than 20 years and not more than life imprisonment. . (b) Environmental harms and other hazards Pursuant to its authority under section 994 of title 28, United States Code, the United States Sentencing Commission shall amend and review the Federal Sentencing Guidelines and policy statements to ensure that the guidelines provide for a penalty enhancement of not less than 1 offense level for a violation of section 401(a) of the Controlled Substances Act ( 21 U.S.C. 841(a) ) while on Federal property or while intentionally trespassing on the property of another if the offense— (1) poses or creates a hazard to humans, wildlife, the environment, or domestic animals