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Early, Large-flowered Clematis
Clematis 'Mrs. James Mason'

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Cultivar: Mrs. James Mason
Hybridized by Fretwell
Registered or introduced: 1984
» View all varieties of Clematis

Group:

Unknown - Tell us

Height:

6-8 ft. (1.8-2.4 m)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

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:

Medium Blue

Flower Fragrance:

No fragrance

Bloom Shape:

Single

Flat

Bloom Diameter:

Medium - 2 to 5 inches (5 to 12 cm)

Bloom Time:

Mid Summer

Late Summer/Early Fall

Sun Exposure:

Full Sun

Sun to Partial Shade

Other details:

Average Water Needs; Water regularly; do not overwater

Danger:

All parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Pruning Groups:

Group 2 - Repeat bloomers; prune immediately after flowering

Patent Information:

Non-patented

Propagation Methods:

Unknown - Tell us

Seed Collecting:

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

Regional

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

Minneapolis, Minnesota

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 27, 2009, Marlina from Blaine, MN (Zone 4b) wrote:

This is my first year with this plant . It is about eight feet tall now and has had about six large blooms on it which I am happy with for its first year. We will see if it makes it over the winter.