Tell as few people as possible, the less people that know, the more likely you will have smole from your grow.
If you have too many to care for in pots, you can always go guerilla. Bring a your extra seeds and hoe or stick that you can ditch if you have to. Clear a sq ft of ground and drop a few seeds in the dirt. Cover and repeat using only a few seeds for each hole. Return in two to three weeks with mulch to help the seedlings to out grow the natural plants. Use horse manure, cow pies, or bagged manure from the garden center. I would return in late July and early August to pull the males and mulch again. I have done these simple steps and smoked very good herb late September. The yield will not be as big as if you cared for them every day, but the beauty is its low labor, and works. If you want to run water to them you can, it will help, just be careful of watchful eyes. Bring binoculars for "bird watching" or something to give you a good story about what your doing. These stories or half truths can get you out of a situation.