“I left [sow thistles in my yard] because, despite its many negative characteristics, sow thistle has positive features, too. As mentioned before, it is an edible plant. For thousands of years, people around the world have eaten the tender young leaves, which make a nutritious potherb and salad green similar to spinach. While I've personally never tasted them, I've watched wildlife attracted to the plant for food. Bees, flies and wasps gather nectar, and birds search among the leaves for seeds and insects.” - Sherry Boas from “Sow thistles are annoying but fun”

    Another “False-Dandelion,” or the weed/plant that is commonly mistaken for dandelion, is the Sow Thistles. If you think of Thistles, usually they’re pink/purple, but this one is yellow. They grow as tall as 6 feet long, with very steady stems and huge leaves. I have them in my backyard, and I’m not quite sure where they came from and how. I left them as it initially thinking it’s dandelion, but it’s just different. I researched them, and they were not so bad or different from dandelion or cat’s ear.
    Again, even though I could collect and eat them, I’m still hesitant. I remember the deadly amount of pesticides that I sprayed on this area and house.

Some Online Sources on Sow Thistle:
5 Potential Uses of Sow Thistle