Semi-serious question: can I keep a poison hemlock as pet, just in case I need it in the future? I.e., are there laws around growing the plant, just like it'd b

Semi-serious question: can I keep a poison hemlock as pet, just in case I need it in the future? I.e., are there laws around growing the plant, just like it'd be for marijuana? Also, are there more details on Socrates' intake of the said plant--any particular recipe or precautions?