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Irish Moss

Sagina subulata

Irish Moss - Sagina subulata
Irish Moss - Sagina subulata

Irish Moss

Sagina subulata

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  • Sagina subulata, commonly known as Irish Moss, is a low growing groundcover that forms a dense, carpet like layer of bright green foliage. Its fine, moss like texture creates a soft, cushiony look that works beautifully between stepping stones, along pathways, or as a lawn alternative in small areas.
  • In late spring to early summer, it produces tiny white flowers that sit just above the foliage, adding a subtle but charming detail to its overall appearance. While the blooms are delicate, they add a nice seasonal touch without taking away from the clean, uniform look of the plant.
  • Irish Moss performs best in full sun to partial shade and prefers well drained soil with consistent moisture. It does not tolerate prolonged drought and will look its best with regular watering, especially in warmer climates. In hotter inland areas, some afternoon shade can help prevent stress and keep the foliage lush.
  • This plant stays very low, typically growing only 1 to 2 inches tall while spreading outward over time to fill in gaps and create a continuous mat. It can handle light foot traffic, making it a popular choice for planting between pavers or in areas where a softer groundcover is desired.
  • Irish Moss is well suited for USDA zones 4 through 8 and performs best in cooler climates or areas with mild summers.
  • This plant is considered non toxic, making it a safe option for gardens with pets and children.
  • With its soft texture, low growing habit, and ability to create a lush green carpet, Irish Moss is a great choice for adding a finished, polished look to small spaces and detailed garden areas.

Foliage: Evergreen
Mature Height: 1-3"
Mature Width: 1-2'
USDA Zone: 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Proper planting technique will help your plants thrive! Follow these simple steps to help your plants establish quickly, develop a strong root system, and live longer:

  • Properly dig the hole
  • Amend the soil to suit each particular plant
  • Place the plant and backfill the soil
  • Provide ample water for each particular plant
  • Review our how to plant guide!

For detailed information, please download our planting guides: