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Irish Moss

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Irish Moss-Sagina subulata Hardy Planting Zones- 4-8 Sun or Shade – Full Sun to Partial Shade Mature Height - 1-2" Mature Width- 12" Bloom Season – Late Spring-Summer Gardener Status- Beginner

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Here's how your plants will look on arrival. All plants are dormant with no leaves or foliage.

Irish Moss - Sagina Subulata

The Beautiful Irish Moss Plant

Irish Moss is a flowering-type moss that can be used as ground covering or to fill spaces in your garden that are in need of an elegant and easy-to-care-for touch. Irish Moss gets its name from its native land: Ireland. In many Irish landscapes, Irish Moss can be found between other bushes, trees and shrubs, as well as covering whole meadows. Despite being called a moss, it is actually not a moss at all and is a member of the Caryophyllaceae family. In order for Irish Moss to maintain its green, lush color, it needs a moderate amount of sunlight. It is best to plant Irish Moss in partial sun to partial shade so that the delicate flowers and leaves do not scorch in the sun. In order to prevent the moss from turning brown from being scorched, it's recommended that you water the plants when the soil becomes overly dry. Irish Moss is not a heat-tolerant plant and can dry out relatively quickly if not enough water is provided to it. 

Irish Moss does well in American zones 4-10. During the colder months of the year, the plant will become dormant until the last frost has passed. It's recommended to plant Irish Moss in late spring when any signs of frost are gone. Plants should be spaced 12 inches apart to allow for adequate growth. Because Irish Moss tends to spread and fill barren areas, you can expect the plant to grow roughly six to eight inches per year. Despite being a more widespread plant, the moss itself only gets one to two inches high, so it is more of a low-lying plant and ideal for coverage rather than to add height to your garden. Even a small amount of Irish Moss can grow to cover an entire garden, and many people use the plant in between pavers to add a lush and gorgeous touch to their homes or businesses.


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Irish moss is a deep green low-lying foliage that works well in between stone pavers and as a ground cover for hillside landscape design. This sun-loving member of the algae family requires regular watering and bears an abundance of tiny white flowers in the spring. This moderately quick grower reaches heights of just about an inch, making it an ideal addition around pathways and fences where mowing isn’t an option, and light foot traffic is likely. Irish moss is an evergreen and does well in temperate climates.