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Vancouveria hexandra

An understory herb in the Berberidaceae family native to the Pacific Northwest, it grows about 8–16 inches tall in moist, shady Douglas-Fir forests, bears delicate white flowers whose sepals sweep back as if turning inside out, and serves as a deer-resistant groundcover.

Is Vancouveria hexandra growing in your garden? Record it and all of your plants in Known.

Common Names

Inside-Out Flower, American Barrenwort, White Inside-Out Flower

Summary

Vancouveria hexandra is a creeping rhizomatous woodland perennial native to the Pacific Northwest, forming a low ground cover in shade. It grows about 6–12 inches tall with green, duck-foot-shaped, compound leaves comprising 9–15 leaflets, and in spring to early summer it bears slender sprays of white flowers on leafless stalks with reflexed petals and sepals that give an inside-out appearance. It spreads slowly via underground rhizomes, making it an ideal understory ground cover for shaded, moist, humus-rich soils. In cultivation it prefers partial to full shade and moist, humus-rich, well-drained soils, tolerating a range of soil types and maintaining moisture in the rooting zone. It is hardy in USDA zones 5–8 and is commonly used as a woodland ground cover or for mass plantings in shaded gardens; it propagates by rhizome division, and seeds can be sown soon after ripe. It provides texture and seasonal interest with green foliage and spring-to-summer white blossoms, making it suitable for shaded borders, woodland settings, and naturalized plantings.

Lifecycle

Perennial

Height

12-18 inches

Spread

12-24 inches

Hardiness Zones

Zones 5-8

Sunlight Requirements

Ideally partial shade to full shade.

Soil Type

Humus-rich, well-drained soil

Soil Drainage

Well-drained soil

Soil pH

Tolerates all pH levels

Bloom Color

White

Bloom Time

Spring to Summer

Foliage Color

Green

Fall Foliage Color

Green

Leaf Lifecycle

Deciduous

Growth Rate

Fastest-growing

Seasons of Interest

Spring and Summer

Propagation Methods

Seeds, Division

Attracts Wildlife

Attracts honey bees and other pollinators, no information on hummingbirds, butterflies, or birds

Taxonomy

Taxonomic Rank
Species
Author
C.Morren & Decne.
Publication
Ann. Sci. Nat., Bot. , sér. 2, 2: 351 (1834)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Ranunculales
Family
Berberidaceae
Genus
Vancouveria

Synonyms

Vancouveria parvifolia Vancouveria picta Vancouveria brevicula Sculeria geminata Caulophyllum gracile Epimedium hexandrum

References

Vancouveria hexandra - Plant Finder. missouribotanicalgarden.org.
Northern Vancouveria. calscape.org.
Vancouveria hexandra. hardy-plant.org.uk.
Vancouveria hexandra - Oregon State Landscape Plan…. landscapeplants.oregonstate.edu.
Vancouveria hexandra. m.bloomingadvantage.com.
Vancouveria hexandra - INSIDE OUT FLOWER. rainyside.com.
Vancouveria hexandra - Sevenoaks Native Nursery. sevenoaksnativenursery.com.
Vancouveria hexandra - Calflora. calflora.org.
Vancouveria hexandra | California Flora Nursery. calfloranursery.com.
The Plant Guide. finegardening.com.
Vancouveria hexandra (White Inside-Out-Flower) - G…. gardenia.net.
Vancouveria hexandra - Great Plant Picks. greatplantpicks.org.
Vancouveria hexandra, Inside out flower.. laspilitas.com.
Plant Profile for Vancouveria hexandra. perennials.com.
Vancouveria hexandra. plantdelights.com.
Vancouveria hexandra - The Plantsman's Preference. plantpref.co.uk.
Vancouveria: Inside-Out Flower. portlandnursery.com.
Vancouveria hexandra | white inside-out flower Alp…. rhs.org.uk.
Inside-Out Flower - Arkansas Cooperative Extension…. uaex.uada.edu.
Vancouveria hexandra. wnps.org.
Vancouveria hexandra. woodbridgenursery.com.au.
Vancouveria hexandra - Xera Plants. xeraplants.com.
World Flora Online. worldfloraonline.org. June 2024.