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Silene acaulis (Cushion-pink) | NPIN

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Silene acaulis (Cushion-pink)
Weyand, Phyllis

Silene acaulis

Silene acaulis (L.) Jacq.

Cushion-pink, Moss campion

Caryophyllaceae (Pink Family)


USDA Symbol: siac

USDA Native Status: L48 (N), AK (N), CAN (N), GL (N), SPM (N)

This popular rock garden plant makes tight, moss-like cushions of almost spiny, glossy leaves which seem to flow over the rocks. Long, woody taproots anchor the perennial deeply in rock crevices. In flower, pink to lavender, five-petaled blossoms dot the bright-green mat in profusion. Dwarf plant, forming dense tussocks, with solitary pink to violet flowers at the ends of leafy branches.

This beautiful little mountain-dwelling wildflower forms extensive moss-like carpets in the western mountains but appears only locally in the East, where Mt. Washington in New Hampshire is its southern limit.


Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple
Size Class: 0-1 ft.

Bloom Information

Bloom Color: Pink , Purple
Bloom Time: Jun , Jul , Aug


USA: AK , AZ , CO , ID , ME , MT , NH , NM , NV , OR , UT , WA , WY
Canada: NS
Native Distribution: Circumpolar (var. exscapa), s. in N. America to OR, ID, n. MT & NH; extending s. in the Rockies to NM & AZ as var. subacaulescens
Native Habitat: Moist, chalky rock crevices in high mts.

Growing Conditions

Light Requirement: Sun
Soil Description: Rich, scree soil.
Conditions Comments: This is a trouble-free, rock garden plant.


Conspicuous Flowers: yes


Description: Can be propagated from stem cuttings. Plants come easily from seed, and should be transplanted to the rockery when the rosettes get 1-2 in. across.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes

Find Seed or Plants

View propagation protocol from Native Plants Network.

Recommended Species Lists

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Additional resources

USDA: Find Silene acaulis in USDA Plants
FNA: Find Silene acaulis in the Flora of North America (if available)
Google: Search Google for Silene acaulis


Record Modified: 2007-01-01
Research By: TWC Staff

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