Maltese cross, M. chalcedonica, is a very hardy plant native to Eastern Russia and China. Nice border plant to 3 ft. with stems topped by brilliant scarlet flowers making it a magnet for hummingbirds and butterflies. A great cut flower. Grows in full or partial sun. Will not tolerate poorly drained soils. Longer lived and easy to grow. The other lychnis we have (so far) is arkwrightii. A low growing variety known as ‘Vesuvius’ with red flowers and dark foliage. Striking! You can find “Ragged Robin”, L. flos-cucli, growing in meadows around the northeast, though probably introduced.