Photo by Melody

PlantFiles: Western Blue Virgin's Bower, Purple Clematis, Rock Clematis, Blue Clematis
Clematis occidentalis

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Species: occidentalis (ok-sih-den-TAY-liss) (Info)

Synonym:Atragene occidentalis
Synonym:Atragene americana
Synonym:Clematis alpina var. verticillaris
Synonym:Clematis verticillaris
Synonym:Clematis verticillaris var. grandiflora

» View all varieties of Clematis

8 members have or want this plant for trade.


36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

Unknown - Tell us

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Bloom Color:
Fuchsia (Red-Purple)

Flower Fragrance:
Unknown - Tell us

Bloom Shape:
Unknown - Tell us

Bloom Diameter:
Unknown - Tell us

Bloom Time:
Mid Spring
Late Spring/Early Summer

Sun Exposure:
Unknown - Tell us

Other details:
Unknown - Tell us

Unknown - Tell us

Pruning Groups:
Group 1 - Spring bloomers; no pruning

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By kennedyh
Thumbnail #1 of Clematis occidentalis by kennedyh

By Todd_Boland
Thumbnail #2 of Clematis occidentalis by Todd_Boland

By Bookerc1
Thumbnail #3 of Clematis occidentalis by Bookerc1

By Bookerc1
Thumbnail #4 of Clematis occidentalis by Bookerc1

By altagardener
Thumbnail #5 of Clematis occidentalis by altagardener


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive Bookerc1 On Jun 30, 2011, Bookerc1 from Mackinaw, IL (Zone 5a) wrote:

I discovered this lovely little wildflower on a trip up a back road through Emigrant's Gulch in Montana. What a sweet surprise! It did not seem to have the bully properties of some other wild clematis, like the variety known as Virgin's Bower in the south, or sweet autumn clematis, which has been known to tumble strong trellises and arbors. It wound its way through shrubs and up trees, without seeming to affect the supporting plant in any way. Very pretty effect!

Neutral Todd_Boland On Dec 15, 2004, Todd_Boland from St. John's, NL (Zone 5b) wrote:

A lovely, delicate clematis of the Rockies, this one is not the most floriferous in cultivation. It looks much like C. alpina or C. macrophylla but the latter species are much more floriferous in the garden. The Blue Clematis, however, will grow in much deeper shade than the other species mentioned. It would be a fine addition to a woodland garden; simply allow the plant to scramble among the shrubs as it would in nature. The seedheads are fluffy and an added attraction.


This plant has been said to grow in the following regions:

Clover, South Carolina

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