well, i'm trying to grow some weed and it's been in some soil for 3 days now and nothing's come up yet. i've kept it watered and in the sun (moderate, not burning) and i've not gotten anything popping outta the soil yet. how far into the soil should my seeds be. i know not to put it at the bottom, but some plants need to be closer to the surface than others. i think it's about 2 inches down in some soil right now...help anyone?