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Michauxii 's Stitchwort Sabulina michauxii

Other Common Name(s):

Previously known as:

  • Arenaria stricta
Phonetic Spelling
sab-yoo-LYE-nuh miss-SHOW-ee-eye
Description

Rock Sandwort is a low growing, herbaceous perennial in the honeysuckle family, native to eastern Canada and the United States. In its natural setting, it can be found growing along rocky summits, woodlands, forests, ledges and rock crevices. It has a low growing habit, forming mats or dense clumps and tuffs.  Small dished shaped white 5-petaled flowers grow on thin stalks as a form called hypanthium (a structure where the basal portions of the calyx (corolla) and the stamens form a cup-shaped tube that contains the nectar secreting organ).  Its taproots are woody and thickened with many branches.  

Rock Sandwort does best in full sun and can thrive on dry conditions on rocky or gravely soils. In the wild, it occurs often on limestone or sandstone ledges with significant sun exposure. The plant has a long tough root that enables in to grow in cracks and holes in rocky substrates. Given the nature of its native growing environment, it can be challenging to grow in the typical home garden or landscape.

Rock Sandwort has a patchy distribution in the United States and is considered endangered in many states and is listed as extinct in Delaware.

Rock Sandwort has slender, wiry, forking, stems that spread along the ground for 4 to 12 inches and form loose mats.

 

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#full sun tolerant#endangered#herbaceous#herbaceous perennial#rock garden#poor soils tolerant#rocky soils tolerant#dry soils tolerant#herb#wildflower#tufts
 
Cultivars / Varieties:
Tags:
#full sun tolerant#endangered#herbaceous#herbaceous perennial#rock garden#poor soils tolerant#rocky soils tolerant#dry soils tolerant#herb#wildflower#tufts
  • Attributes:
    Genus:
    Sabulina
    Species:
    michauxii
    Family:
    Caryophyllaceae
    Life Cycle:
    Perennial
    Woody
    Country Or Region Of Origin:
    Eastern Canada, Central and Eastern United States south to Texas
    Particularly Resistant To (Insects/Diseases/Other Problems):
    rocky soil
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Wildflower
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Clumping
    Dense
    Mounding
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Soil Texture:
    Shallow Rocky
    Soil Drainage:
    Good Drainage
    Occasionally Dry
    USDA Plant Hardiness Zone:
    3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
  • Fruit:
    Fruit Type:
    Capsule
    Fruit Description:
    The fruit is dry and splits open when ripe.
  • Flowers:
    Flower Color:
    White
    Flower Inflorescence:
    Cyme
    Panicle
    Flower Bloom Time:
    Spring
    Summer
    Flower Shape:
    Saucer
    Flower Petals:
    4-5 petals/rays
    Flower Description:
    This plant has small, five-petal flowers. Petals are rounded or slightly notched.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Feel:
    Leathery
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Lanceolate
    Linear
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    < 1 inch
    Leaf Width:
    < 1 inch
    Leaf Description:
    This plant has opposite, needle-like leaves with tufts of shorter leaves in axis. Leaves are often matted and tightly overlapping. The leaf blade is erect to spreading, veined, and rigid.
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Form:
    Straight
    Stem Surface:
    Smooth (glabrous)
    Stem Description:
    Stems are 3 to 16 inches long with erect or ascending branches. Flowering stems can be up to 10 times as long as leaves.
  • Landscape:
    Landscape Location:
    Container
    Hanging Baskets
    Rock Wall
    Landscape Theme:
    Rock Garden
    Design Feature:
    Small groups
    Resistance To Challenges:
    Dry Soil
    Poor Soil