Every time I get weed I notice sticky white stuff near the stem of the weed. There isn't a whole ton of it but I notice some whiteness on the ends of the stem making the weed fairly soft. What is this stuff? Is it naturaly produced to make the bud stick to the stem? or what is it. I just want to make sure that it isn't spoiled or anything and safe to smoke. Does molded weed affect how long the high lasts?