Creeping charlie, Glechoma hederacea (also known as ground ivy, catsfoot, alehoof) was introduced in North America from Europe in the 17th century as a groundcover. Now listed as an invasive weed in many states, it’s part of the Lamiaceae or mint family, known for fragrance, square-shaped stems and aggressive growth habits.
Scalloped, opposite leaves appear early in spring, with bilaterally symmetrical flowers emerging April-June. It spreads through stolons, long, thin offshoot plant stems or runners which grow outward above ground. Creeping charlie reproduces by seed and rhizome–underground modified stems that spread horizontally. Unchecked it can quickly become a matted carpet, crowding out grass, other weeds and native plants.