Clematis 'Jackmanii'

Jackmanii Clematis

Clematis ‘Jackmanii’ is a classic, vigorous climbing clematis valued for its large, velvety deep-purple flowers and reliable summer performance. Blooming freely from mid-summer into early fall, this variety provides dramatic vertical color on trellises, arbors, fences, and pergolas.

The flowers are 4–6 inches wide with rich violet-purple sepals and contrasting creamy stamens. ‘Jackmanii’ is a Group 3 clematis, flowering on new wood, which makes pruning simple and dependable year to year.


Plant Profile
Type: Deciduous flowering vine
Mature Size:



Width: 3–6 ft



Height: 10–12 ft



Bloom: Large, deep purple flowers, mid-summer to early fall
Foliage: Medium green; provides a clean backdrop for blooms

Zones: 4a–9b
Light: Full sun to partial shade (best flowering with sun on the vine and shaded roots)
Soil: Moist, well-drained, organically rich soils
Water: Moderate; consistent moisture preferred


Features & Uses


Excellent for trellises, fences, arbors, and mailboxes



Reliable rebloomer with a long flowering season



Easy to maintain due to simple pruning requirements



Pairs well with roses and shrubs for layered garden interest




Care Notes


Prune hard in late winter or early spring to 12–18 inches above ground



Keep roots cool with mulch or companion plantings



Provide support early to guide climbing stems

Plant type

Vine

Height

10-12'

Width

3-6'

Hardiness zones

4–9

Sunlight

Full Sun, Partial Shade

Bloom time

Summer

Leaf color

Green

Fall color

Green

Attracts

Bees

Soil

Moist well-drained

Landscape use

Trellis

Shape

Climbing

Fruit

Yes

Drought tolerant

No