50 IRISH MOSS Groundcover Heath Pearlwort Sagina Sublata White Flower Seeds *Comb S/H COLOR: White Flowers & Evergreen Leaves BLOOM TIME: All Summer . . . HARDINESS ZONE: 4 - 10 PLANT HEIGHT: 1 - 2" . . . PLANT SPACING: 6 - 12" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average As the name suggests, Irish Moss is a European Native. This thick, dense mat of tiny leaves grows best in moist, well drained soils to sandy, gravely soil. It can be grown in woodland settings, over or between rocks, or between stepping stones. The bright green leaves are evergreen and the small white flowers are star shaped. Irish Moss is deer resistant, and is a great choice for a ground-cover to prevent any weeds from moving in.