From Illegal Utah Marijuana Gardens Dot Com:
Did you know that marijuana is being illegally grown in Utah?
It is? Gee Wally, if I stumble across some marijuana when I’m out and about, what ever should I do?
If you think you have found an illegal marijuana garden, note the location either on a map or GPS unit. We will be able to find it either by latitude and longitude, or a place name.
Avoid any contact with the suspects who may be present and leave the area, undisturbed, as soon as possible. Contact us through this website or your local law enforcement, the sooner the better.
[Hat Tip: Robert Latham through the NORML listserv]