Photo by Melody

PlantFiles: Small Flowered Clematis
Clematis 'Rooguchi'

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Cultivar: Rooguchi
Additional cultivar information: (aka Roguchi)
Hybridized by Kazushige Ozawa; Year of Registration or Introduction: 1988

Synonym:Clematis integrifolia x reticulata

» View all varieties of Clematis

6 vendors have this plant for sale.

25 members have or want this plant for trade.

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6-8 ft. (1.8-2.4 m)

36-48 in. (90-120 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Bloom Color:
Dark Purple/Black

Flower Fragrance:
No fragrance

Bloom Shape:

Bloom Diameter:
Small - less than 2 inches (5 cm)

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer

Sun Exposure:
Sun to Partial Shade

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting

Unknown - Tell us

Pruning Groups:
Group 3 - Summer/Fall bloomers; prune hard in early spring

Patent Information:

Propagation Methods:
From softwood cuttings
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors
From seed; sow indoors before last frost
By grafting
By serpentine layering

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 22 photos.
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8 positives
No neutrals
No negatives

Gardeners' Notes:

Positive sladeofsky On May 22, 2013, sladeofsky from Louisville, KY (Zone 6b) wrote:

I absolutely adore this Clematis. It is a deep purple that looks best with a brighter companion, especially roses. It doesn't climb by tendrils, but it does look for vertical support and will grasp other plants or trellises with its leaf stems. It can grow rather large but is easily managed. It blooms in such profusion. It is truly a must have. From Japan, like so many great Clematis, especially those including American species. It gets it's bell shaped flowers from our native reticulata. Some say C. durandii is in the parentage which would mean there are 3 distinct species in its past, the third being C. lanuginosa which may account for it having slightly larger flowers than either it's C. integrifolia or C. reticulata parents.

Positive lbuyer On Sep 23, 2012, lbuyer from Michigan City, IN (Zone 6a) wrote:

I've been growing this clematis since spring 2007 and I simply love it. It starts to bloom in the spring and continues right through to early fall. The bells are a lovely color and a welcome change from the big, gaudy, flat-faced hybrids with their seeming delicacy (in actuality, however, they seem tough as nails). I grow numerous other Clematis (Niobe, Jackmanii, Etoile Violette, Ville de Lyon) and, while they come and go, they always have rooguchi for a blooming companion (and its colors blend beautifully with everything).

Positive JCG On Aug 23, 2012, JCG from Anchorage, AK wrote:

Here in Anchorage Alaska my ROOGUCHI is 12 foot tall and is literally covered with blossoms and buds..It overwintered with no problems..Loving it..

Positive bfmayer70 On Feb 15, 2010, bfmayer70 from Buffalo, NY wrote:

Our Rooguchi plants thrive in Buffalo, New York, with very little care. Their blossoms are unique, and very colorful, and produce very pretty seedheads. The only problem we have is with powdery mildew - the Rooguchi seems to be particularly susceptable.

Positive mwburlin On Nov 17, 2009, mwburlin from Philadelphia, PA (Zone 7a) wrote:

Have planted this on an 8 ft arbor covered with wisteria. The rooguchi intertwines with the wisteria and blooms all summer. Doesn't cross the arbor arch portion but is lush to the top on sun drenched east side. bumble bees love the flowers which are profuse. Easy to strip out and prune ( group 3).

Positive Taranado On Apr 19, 2008, Taranado from Milan, IL wrote:

I have 3 of these and maybe it depends on where you live, but I prune it back every year. I did not do that the first year and it barely grew. Now it's thriving, and was 6 feet tall last year. I found all of mine on eBay, that's where I discovered it. It really does attract humming birds too. In the summer when this is blooming I have counted 8 to 10 humming birds at one time.

Positive doss On Jun 1, 2006, doss from Stanford, CA (Zone 9b) wrote:

Clematis Rooguchi is herbacious meaning that it doesn't climb by tendrils. This makes it a great flower for scrambling through perennial gardens. You can still help it climb but it won't choke your plants if you let it wander among low shrubs, roses, or other plants.

Positive cceamore On Sep 29, 2004, cceamore from Hixson, TN (Zone 7a) wrote:

I love this clematis because it has the longest bloom period I have ever seen for a clematis.It is a beautiful bell shaped dark purple flower with a royal purple/blue pattern on outside of petal.
The vine itself has black stems with dark green leaves.It likes some sun but seems to burn in direct sun plus the bells lose their pretty shape in full sun and it won't bloom as long.This is an outstanding but rare find. I f you find it then get it .You won't be disapointed.


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

Pelham, Alabama
Anchorage, Alaska
San Leandro, California
Sebastopol, California
Chiefland, Florida
Cochran, Georgia
Lawrenceville, Georgia
Marietta, Georgia
Hanna City, Illinois
Mattoon, Illinois
Milan, Illinois
Michigan City, Indiana
Atalissa, Iowa
Louisville, Kentucky (2 reports)
Taylorsville, Kentucky
Covington, Louisiana
Gardiner, Maine
Swampscott, Massachusetts
Wayzata, Minnesota
Polson, Montana
Salem, New Hampshire
Freehold, New Jersey
Bosque, New Mexico
Mesilla Park, New Mexico
Santa Fe, New Mexico
Southold, New York
Apex, North Carolina
Greensboro, North Carolina
Eugene, Oregon
Sherwood, Oregon
Allentown, Pennsylvania
Lansdowne, Pennsylvania
Philadelphia, Pennsylvania
Pittsburgh, Pennsylvania
Wilkes Barre, Pennsylvania
Clarksville, Tennessee
Hixson, Tennessee
Houston, Texas
Irving, Texas
Lewisville, Texas
Orange, Texas
Round Rock, Texas
South Burlington, Vermont
Fircrest, Washington
South Hill, Washington

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