Clematis 'Jackmanii'
Best climbing vine for gardeners seeking low-maintenance vertical color.
Discover the timeless beauty of Clematis 'Jackmanii', a garden classic since the 1800s. This vigorous, deciduous vine bursts with a profusion of vibrant violet-purple flowers from early to late summer. Reaching up to 10 feet, it's ideal for adding vertical interest to trellises, arbors, or fences. For optimal blooms, plant with roots shaded and foliage in full sun. This Group 3 clematis requires hard pruning in late winter to encourage robust new growth and a spectacular display.
$24.95
Owner Satisfaction
4.7
/ 5
Category Rank
61
/ 2673
#61 in Plants
Price vs Category Average
-43%
Below average
Genus
Clematis
/ Clematis
Who it's for
- Gardeners seeking reliable, high-impact seasonal color
- Busy homeowners wanting simple, low-maintenance pruning routines
- Landscapers needing fast-growing vines for vertical garden structures
Who should skip it
- Casual gardeners unable to manage specific root-cooling requirements
- Impatient growers looking for immediate, full-scale flowering results
- Minimalists lacking heavy-duty support structures for climbing plants
Performance breakdown
Bloom Vigor
Produces a reliable, heavy profusion of flowers throughout the summer months.
Climbing Versatility
Easily scales trellises and arbors to create dramatic vertical garden interest.
Pollinator Appeal
Acts as a magnet for bees, butterflies, and hummingbirds in gardens.
Maintenance Simplicity
Requires specific late-winter pruning to maintain health and maximize future growth.
Environmental Resilience
Robust growth habit paired with reliable deer resistance for worry-free planting.
Climate Adaptability
Thrives across a broad range of hardiness zones from four through eight.
Key Specs
Genus
Clematis
Variety
'Jackmanii'
Hardiness Zones
4 - 8
Mature Height
10 Feet
Mature Width
6 Feet
Light Requirement
Full Sun to Partial Shade
Soil Moisture
Moist, well-drained
Bloom Period
Early Summer to Late Summer
Features
- Award-winning Royal Horticultural Society recognition
- Abundant violet-purple flowers
- Attracts bees, butterflies, and hummingbirds
- Fast-growing climber
- Long bloom period
- Versatile for various garden structures
- Pollinator-friendly
- Deer resistant
What customers say
Customers consistently praise the exceptional quality and health of the Clematis 'Jackmanii' upon arrival. Reviewers frequently note the plant's impressive vigor, establishing quickly and often producing reliable, abundant blooms even in the first year. This robust performance confirms the plant's reliability and justifies the investment for gardeners seeking a proven, high impact vine. The overall sentiment highlights trust in the sourcing and the plant's ability to thrive.
Know before you buy
As a Group 3 clematis, this variety should be hard-pruned in late winter or very early spring. Cut the stems back to about 8 to 12 inches above the ground to encourage vigorous new growth and a fuller bloom display.
Clematis prefer cool, moist roots while their leaves reach for the sun. You can achieve this by planting a low-growing perennial or groundcover at the base of the vine, or by placing a flat stone over the root zone to keep the soil temperature down.
Clematis 'Jackmanii' is hardy in zones 4 through 8. If you live within these zones, it is well-suited to your climate, provided it receives the recommended moisture and light.
While no plant is completely deer-proof, 'Jackmanii' is generally avoided by deer. It is a reliable choice for gardens where deer pressure is a concern.
At maturity, this vine reaches up to 10 feet in height and 6 feet in width. Ensure you have a sturdy trellis, arbor, or fence that can accommodate this size and provide enough surface area for the vine to climb.
Yes, the vibrant violet-purple flowers are highly attractive to bees, butterflies, and hummingbirds. It is an excellent choice if you are looking to support local pollinator populations.
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