Early, Large-flowered Clematis 'Elsa Spaeth'


Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Cultivar: Elsa Spaeth
Additional cultivar information:(aka Blue Boy, Elsa Spth, Xerxes)
Hybridized by Spath
Registered or introduced: 1891
» View all varieties of Clematis


Early Large-flowered


6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 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)

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:


Flower Fragrance:

No fragrance

Bloom Shape:


Bloom Diameter:

Large - 5 to 8 inches (12 to 20 cm)

Bloom Time:

Late Spring/Early Summer

Late Fall/Early Winter

Sun Exposure:

Sun to Partial Shade

Other details:

Unknown - Tell us


Unknown - Tell us

Pruning Groups:

Group 2 - Repeat bloomers; prune immediately after flowering

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Clifton, Colorado

Baton Rouge, Louisiana (2 reports)

Kensington, Maryland

Southold, New York

Raleigh, North Carolina

Newark, Ohio

Rapid City, South Dakota

Penhook, Virginia

show all

Gardeners' Notes:


On Jun 26, 2008, linjasar from Upper Saint Clair, PA (Zone 6a) wrote:

This plant just really kicked in after about three years. It bloomed so little last year that I could not remember which clematis it was. It has bloomed for weeks this year. I love the color and size of the flowers!


On May 9, 2006, kdestiny from Shickshinny, PA wrote:

I have an "Elsa Spath" clematis which I had outside last season and brought in for the winter. I love it! I had blooms throughout the winter and since I put it back out side two weeks ago it has grown almost 4 feet! It seems tolerant of drought as well. It gets beautiful 2-3" purple blooms and will flower many times during the growing season.


On Jan 3, 2005, mystic from Ewing, KY (Zone 6a) wrote:

Awarded RHS Award of Garden Merit.


On Jun 5, 2003, Petsitterbarb from Claremore, OK wrote:

I've found this plant to be perfectly lovely! I love the softer color of purple, and I even have one that blooms in mostly shade conditions, although it's new this year. I guess "time will tell" as to future years!
I adore clematis in general, and have LOTS of 'em! The neighbors love it, too!


On Jun 4, 2003, sunyluvsma wrote:

Lovely vine. big purple flowers. plant in full sun.


On May 24, 2003, Nookie wrote:

I have tried to grow the clematis for 5 years, and have no success. I've tried different areas in my yard, and no success. My soil is black with quite a bit of clay, and acidic. Is this my problem? Please someone answer, as I would love to grow one. The last one I tried lasted 2 years, and bloomed beautifully, but last winter our frost line went down 97 inches. So I suppose that could be a factor too. I live in the U.P. of Michigan, and it's very cold here in winter.