It is just plain impolite to mess with somone elses grow ALWAYS leave it alone. However if you have a backbone and truly feel that to grow is everyones right i see no harm in leaving a note with either your e-mail or phone number (someone has to take the first step) so that you can meet a grower in your area. Meeting some of the locals opens up a great opportunity to meet some locals and share genetics with some local like minded types and they should probably be advised that there grow is easy to find. Over the last few years i have had some plans stolen and it is a shitty feeling, I always like to think of pot smokers as being decent types and morally a bit above the rest of society but unfourtunatly loooking at the pattern of thefts i have seen in the past a lot of smokers are no better than the rest of the selfish bastards out ther and this makes me sad. last year my biggest loss was a bunch of plants that i was using for seed production for the local med pot growers org. and this shows to me that they both knew nothing (seeded pot can't be a treat to smoke) and cared for no one other than themselves. ok i am rambling a bit but the bottom line is respect your fellow pot growers.
slart