Clematis Species, Passion Flower Clematis

Clematisflorida var. sieboldiana

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Clematis (KLEM-uh-tiss)
Synonym
Clematis bicolor
Clematis siboldii
Clematis florida var. bicolor
Spacing
10-12 ft. (3-3.6 m)
Hardiness
24-36 in. (60-90 cm)
Sun Exposure
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)
Danger
Sun to Partial Shade
Light Shade
Bloom Color
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Time
Pale Yellow
Pale Green
Medium Purple
Other Details
Other details
Mid Summer
Late Summer/Early Fall
Propagation Methods
Seed Collecting
Flower Fragrance
From softwood cuttings
From semi-hardwood cuttings
By simple layering
By serpentine layering
Patent Information
Group
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Bloom Shape
Pruning Groups
Bloom Diameter
Foliage Color
Vines and Climbers
Bloom Characteristics
Water Requirements
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

San Anselmo, California

San Jose, California

Jacksonville, Florida

Orange Park, Florida

Calhoun, Georgia

Lavonia, Georgia

Fort George G Meade, Maryland

Hull, Massachusetts

Saint Clair Shores, Michigan

Bedford, New Hampshire

Cincinnati, Ohio

Pittsburgh, Pennsylvania

Austin, Texas

Garland, Texas

Plano, Texas

Willis, Texas

Amelia Court House, Virginia

Charlottesville, Virginia

Fairfax, Virginia

Leesburg, Virginia

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Gardener's Notes:

6
positives
2
neutrals
0
negative
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C
ROSLINDALE, MA | March 2016 | neutral

Hardy to Z6. Has a reputation for being miffy.

Blackened crispy leaves are often due to a common fungal disease called cle...Read More

S
S
S79
Hull, MA | July 2014 | positive

I planted this spring of 2011. I got in from an online nursery and it looked broken and dead when I planted it. It eventually grew and I ...Read More

H
Cincinnati, OH | August 2009 | positive

This wonderful vine is perfectly hardy in my zone 6a garden. In fact Bluestone Perennials, where I bought mine two years ago, lists its ...Read More

T
Fort George G Meade, MD | May 2009 | positive

My apt complexes 'lawn maintenance' people took a weed whacker to this early in the spring this year reducing it to maybe 18". As of toda...Read More

C
Santa Clara, CA (Zone 9a) | July 2008 | positive

One of the best performed clematis I planted this spring. Striking, unique, exotic flowers. LOVE IT!!!

J
Willis, TX (Zone 8b) | October 2006 | positive

A fantastic Clematis for the warmer zones

F
(Zone 8a) | July 2005 | neutral

Seems a little demanding - I bought one for my mother and it just didn't want to grow. Will see if I have any more success soon..

C
C
Saint Clair Shores, MI (Zone 6b) | June 2005 | positive

I planted this plant last spring in an area that is well protected from the winter winds, but is probably not ideal as it is rather shady...Read More

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