Hence, you'd think I'd have known better than to plant Eryngium giganteum, commonly known as "Miss Willmott's ghost." This irresistible behemoth perennial grows to over 4 feet tall and 2 1/2 feet ...

Miss Willmott’s favorite sprinkler was Eryngium giganteum, or Giant Sea Holly. It takes two years to make its presence known. It can materialize the first year with a few leaves, roots and a ...