Photo by Melody

PlantFiles: Clematis
Clematis 'Jackmanii Superba'

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Cultivar: Jackmanii Superba
Hybridized by Cripps & Son, England; Year of Registration or Introduction: 1878

» View all varieties of Clematis

7 vendors have this plant for sale.

4 members have or want this plant for trade.


10-12 ft. (3-3.6 m)

4-6 ft. (1.2-1.8 m)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Bloom Color:
Maroon (Purple-Brown)

Flower Fragrance:
No fragrance

Bloom Shape:

Bloom Diameter:
Medium - 2 to 5 inches (5 to 12 cm)

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

Sun Exposure:
Sun to Partial Shade

Other details:
Average Water Needs; Water regularly; do not overwater

All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

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

Patent Information:

Propagation Methods:
From softwood cuttings
From semi-hardwood cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By Gindee77
Thumbnail #1 of Clematis  by Gindee77

By Happenstance
Thumbnail #2 of Clematis  by Happenstance

By ocimum_nate
Thumbnail #3 of Clematis  by ocimum_nate

By Happenstance
Thumbnail #4 of Clematis  by Happenstance

By Happenstance
Thumbnail #5 of Clematis  by Happenstance

By ineedacupoftea
Thumbnail #6 of Clematis  by ineedacupoftea

By kuvasz11
Thumbnail #7 of Clematis  by kuvasz11

There are a total of 10 photos.
Click here to view them all!


3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive northgrass On Aug 15, 2006, northgrass from West Chazy, NY (Zone 4b) wrote:

I love the growing habit of this clematis, never clumps up in masses of tangled stems; it rambles nicely up the porch railing. It also blooms for at least 2 months, maybe more if I would cut out the seed heads. I would love to find a light colored clematis with the same characteristics as this one, so far I have not.

Positive Gindee77 On May 18, 2005, Gindee77 from Hampton, IL (Zone 5a) wrote:

My favorite clematis so far. I've had the same Jackmanii for over 30 years and it's as beautiful as ever. It does best when you cut it back to the ground in my zone in late March or early April.

Positive Happenstance On Apr 15, 2005, Happenstance from Northern California, CA wrote:

Limited success in 10a, trying to find a spot for cool roots and still enough sun has been a challenge. Third season and I'm seeing more buds than in the first two seasons.


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

Salem, Alabama
Juneau, Alaska
Clayton, California
Denver, Colorado
Newark, Delaware
Rincon, Georgia
Hampton, Illinois
Streamwood, Illinois
Dracut, Massachusetts
West Roxbury, Massachusetts
Trenton, Michigan
Saint Louis, Missouri
Edmond, Oklahoma
Albany, Oregon
Portland, Oregon
Allentown, Pennsylvania
Columbia, South Carolina
Aberdeen, South Dakota
Murfreesboro, Tennessee
Garland, Texas
Rockport, Texas
Fancy Gap, Virginia
Yakima, Washington
Onalaska, Wisconsin
Owen, Wisconsin

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