Leave the plants alone, find someone who grows or sells weed(if you really wanted you could ask whoever's growing the plants you know of) and ask to buy bud from them. Then smoke whatever they give you in a bowl or pipe of some sort. You probably dont have one so find a glassware store and buy one and if you cant do that then learn or find someone who can roll a joint, you can use the paper from altoid mints if you're desperate. A better idea would be to use a homeade bong or pipe, look around the net and you'll find instructions. I don't like to deal with preparing alot of bullshit like homeade stuff to "make things work" my first try or even now, but do whatever you want.