Data specific to Clematis (Edit)
Raised by: Walter Pennell
Country of Origin: United Kingdom
Growing Zones: USDA Zone 4
USDA Zone 5
USDA Zone 6
USDA Zone 7
USDA Zone 8
USDA Zone 9
USDA Zone 10
USDA Zone 11
Typical Plant Size: Typically 8 to 10 feet
Pruning Group: Group 2 - Optional, light pruning after flowering
Bloom Diameter: Large - between 6 to 8 inches
Bloom Color (Tepals): Deep Blue hue
Center Color (Anthers): Yellow anthers
Bloom Shape: Single
Preferred Light: Tolerates partial shade
Prefers full sun
Suitability as Cut Flower: Excellent cut flower (strong stem, long vase life)
Moisture Requirements: Average moisture requirements
Additional Information: Very attractive seedheads
Recommendations: Good choice for shaded areas or northern walls
Awards: Royal Horticultural Society Award of Garden Merit

General Plant Information (Edit)
Plant Habit: Vine
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Plant Height: 8-10 ft.
Leaves: Deciduous
Other: Large leaves
Flowers: Showy
Flower Color: Blue
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Uses: Cut Flower
Awards and Recognitions: RHS AGM

Image
Common names
  • Clematis

Photo Gallery
Location: Maine
Date: 2021
Location: Maine
Date: 2013-07-04
Third year in my garden
Location: Maine
backside
Location: Maine
Date: 2013-07-04

Photo courtesy Joy Creek Nursery.  Used with permission.
Comments:
  • Posted by goldfinch4 (Ripon, Wisconsin) on Feb 1, 2012 3:39 AM concerning plant:
    Named after Mr. Pennell's long time employee, Ken Donson. Parentage: 'Barbara Jackman' x 'Daniel Deronda'.

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