dont tell it to ANYBODY !
dont go there to often, find a good excuse, like Mountain bike in the wood`s if that is where its located, try to find two spots so if one is discovered you might be able to harvest the other, dont leave garbages or any sings of you near the plants
auto`s is IMO a good choise as it let you harvest it before Ppl/cop`s actually begin to go and look for crops
start em inside under some fluorescent light, so you have small seedlings/Veg plants to plant out, remove all other growth around the plants so it don't have to compete for light/food and dont catch Bugs and stuff from other plants so easily, dig a nice 1x1x1 ft hole and fill it with your own fresh soil and drop a few nutrients sticks/balls in the bottom of the hole before you fill it with your fresh soil and plant out your seedling
just what I could come up with here and now, but there are many threats out there about the subject, google is a great tool