by Connie Oswald Stofko There are two kinds of thistles you might have in your garden now: the Canada thistle and the bull thistle. Both have these harmful traits: The bull thistle (Cirsium vulgare) is fairly easy to dig up with a shovel. You can see more at WNY PRISM about the bull thistle and what it looks like. On the other hand, the Canada thistle (Cirsium arvense) is a gardener’s nightmare, so we’ll concentrate on that. (See more here…...
