<span> This is my first time growing and I am growing outdoors and I realize that it is still early in the season but I am worried that when my plant begins flowering that it will get pollinated by some random ditch weed that may be around. I'm not for sure if there is ditch weed around but I live in Nebraska and there's ditch weed</span> all over. So my question is: Is there any way that I can prevent unwanted pollination? such as covering my plants? or covering the buds themselves?