May 25, 2020

Not a Stepping Stone

Sagina subulata - Irish moss

Janine Pineo Photo | Sagina subulata – Irish moss

The looks of Sagina subulata belie its preferred growing conditions of dry, sandy or gravelly soil by creating a lush groundcover of rich green. This European native is generally known as Irish moss here in the United States and heath pearlwort elsewhere. Not a true moss, this low-growing plant sports tiny white flowers in late spring. It doesn’t do well in drought or in soggy soils, nor will it thrive in hot, humid weather. Hardy to Zone 4, Irish moss does best in full sun or partial shade.