Pasture Health, Weeds Grazing Reduces Yellow Starthistle Kathy Voth September 12, 2016 Over the fall and winter we're going to help you think about how you time grazing to manage weeds or plants you'd like fewer of. So here's the first in the series. Yellow starthistle arrived in CalAll the grazing management tips you need Subscribe to read this article and over 2,500 more! Subscribe today! If you're already a subscriber, log in here.