Clematis Species, Passion Flower Clematis

Clematis florida var. sieboldiana

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Clematis (KLEM-uh-tiss)
Synonym
Clematis bicolor
Clematis siboldii
Clematis florida var. bicolor
Height
10-12 ft. (3-3.6 m)
Spacing
24-36 in. (60-90 cm)
Hardiness
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)
Sun Exposure
Sun to Partial Shade
Light Shade
Danger
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Pale Yellow
Pale Green
Medium Purple
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Other details
Propagation Methods
From softwood cuttings
From semi-hardwood cuttings
By simple layering
By serpentine layering
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Flower Fragrance
Slightly Fragrant
Patent Information
Non-patented
Group
Late Large-flowered
Bloom Shape
Semi-Double
Flat
Pruning Groups
Group 2 - Repeat bloomers; prune immediately after flowering
Bloom Diameter
Medium - 2 to 5 inches (5 to 12 cm)
Foliage Color
Bloom Characteristics
Flowers are good for cutting
Water Requirements
Average Water Needs; Water regularly; do not overwater
Where to Grow
Grow outdoors year-round in hardiness zone
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
Sort By:
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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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