Dryas octopetala L.
Eightpetal mountain-avens, Eight-petal mountain-avens, Mountain dryas, White mountain-avens
Rosaceae (Rose Family)
USDA Symbol: DROC
This slow-growing perennial forms mats up to 3 ft. wide and 8 in. tall. A small, prostrate plant often in large patches, the woody stems rooting, with 1 cream or white flower at end of each erect, leafless flower stalk. The mats appear to be a mass of oval, leathery leaves with rounded teeth. The leaves remain green during winter but deteriorate rapidly as new leaves are produced in spring. Single, white flowers, looking like miniature roses, are borne atop 2-8 in. stems. Summer fruits are fluffy and feathery.
This species often grows with dwarf willows, the prostrate habits of each providing protection against cold, drying winds.
From the Image Gallery
Bloom InformationBloom Color: White
Bloom Time: Jun , Jul
DistributionUSA: AK , CO , ID , MT , OR , UT , WA , WY
Canada: BC , NL , NT , NU , QC , YT
Native Distribution: AK, s. to the n. Cascades of WA & in the Rockies to CO; circumpolar
Native Habitat: Gravel bars; limestone outcrops; open meadows
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Soil Description: Well-drained, sandy or gravelly soils.
Conditions Comments: Not Available
BenefitConspicuous Flowers: yes
Butterflies and Moths of North America (BAMONA)Dryas octopetala is a larval host and/or nectar source for:
Alberta Fritillary |
Larval HostLearn more at BAMONA
PropagationDescription: Mountain dryas can be propagated by seed, layers or root divisions. Make divisions in early spring. Seeds are slow and not too sure.
Seed Collection: Not Available
Seed Treatment: Cold, moist stratification for several months substantially increases germination.
Commercially Avail: yes
Find Seed or Plants
View propagation protocol from Native Plants Network.
BibliographyBibref 1186 - Field Guide to Moths of Eastern North America (2005) Covell, C.V., Jr.
Bibref 1185 - Field Guide to Western Butterflies (Peterson Field Guides) (1999) Opler, P.A. and A.B. Wright
Search More Titles in Bibliography
Additional resourcesUSDA: Find Dryas octopetala in USDA Plants
FNA: Find Dryas octopetala in the Flora of North America (if available)
Google: Search Google for Dryas octopetala
MetadataRecord Modified: 2012-07-31
Research By: TWC Staff