Ground covers, Perennials
Most are vigorous perennials capable of spreading beyond their allotted space, especially if they receive plenty of water. Police them to be sure they don’t invade choicer plantings. Useful for naturalizing at woodland edges or in barely maintained areas. Blossoms are yellow or white; they appear in summer.Lysimachia nummularia
Native to Europe; naturalized in eastern North America. Grows to 4–8 in. high, spreading 2 ft. or more, rooting as it goes. Forms attractive mat of roundish, light green, 1-in. leaves. Yellow flowers about 1 in. across appear singly in leaf joints. Best use is in corners or containers where it need not be restrained. Will spill from a wall or hanging basket.
From the Pyrenees. Forms wide, 8–12-in.-tall mats composed of 1–1 1/2-in., soft gray-green...
From Russia. Loose, open form. Grows to 2–3 ft. high and 1 ft. wide. Leaves and stems are hairy;...
Spreading, mounding, leafy clump to 8 in. high. Branching, semi-upright flower stems to 1 ft. or more....