Master Gardener: Top 10 weeds

Top 10 weeds found in yards and gardens By: Charleen Barr Colorado State University Extension Master Gardener in Larimer Count Everyone has them—some more than others. Some we rarely see, some are expected every year. Some are poisonous, some are helpful. No matter what type of gardener, sooner or later they show up. What are they? Weeds! Below are the top ten found in yards and gardens: 10. Canada Thistle (Cirsium arvense) is one of the most common weeds found throughout North America. ... Full Story