Goutweed spreads in the garden as if it has a master plan–and once it’s there, it’s hard to get rid of. This rampant weed is one of the most persistent in the garden. With its underground runners, it ...

Even worse are rhizome spreaders like ground elder (Aegopodium podagraria) and mugwort (Artemisia vulgaris), which several readers identified, some after months of confusion. Reader Tricia in ...