Clematis 'Jackmanii'
Best vigorous vine for consistent, abundant garden color.
Clematis 'Jackmanii' is a classic, large-flowered clematis that has been popular since the 1800s. This showy, perennial vine offers long-lasting interest from early to late summer with masses of violet-purple flowers, each 5 to 7 inches across. Blooming on new wood, this fast-growing, deciduous climber attracts bees, butterflies, and hummingbirds. Its twining and trailing habit makes it ideal for trellises, arbors, fences, or even rambling through shrubbery. It thrives in full sun to part shade with fertile, moist, well-drained soil, and is cold hardy to Zone 4. This variety is also deer resistant.
$24.95
Owner Satisfaction
4.5
/ 5
Category Rank
2378
/ 4677
#2378 in Landscaping & Garden Plants
Price vs Category Average
-10%
Below average
Genus
Clematis
/ Clematis
Who it's for
- Gardeners seeking vibrant, extended floral displays.
- Busy individuals desiring a high-impact, low-effort climbing plant.
- Homeowners wanting to add vertical beauty and structure.
Who should skip it
- Gardeners without existing robust climbing supports.
- Novice plant enthusiasts unfamiliar with specific pruning techniques.
- Gardeners in humid climates or with dense planting areas.
Performance breakdown
Bloom Impact
Massive violet-purple flowers provide a high-contrast focal point for any garden.
Hardiness Range
Robust cold tolerance makes this a reliable performer across diverse climates.
Pollinator Appeal
A proven magnet for hummingbirds, butterflies, and essential garden bees.
Maintenance Ease
Group 3 pruning requirements simplify seasonal care for novice gardeners.
Deer Resistance
Natural deterrent properties offer peace of mind in high-traffic wildlife areas.
Structural Versatility
Adaptable vining habit thrives on trellises, fences, or rambling through shrubs.
Key Specs
Genus
Clematis
Species
hybrid
Variety
'Jackmanii'
Zone
4 - 8
Bloom Start to End
Early Summer - Late Summer
Clematis Pruning
Group 3
Habit
Vining
Height
7 ft - 10 ft
Features
- Showy, large violet-purple flowers
- Blooms on new wood for reliable summer color
- Attracts pollinators like bees and hummingbirds
- Deer resistant for garden protection
- Cold hardy to Zone 4
- Versatile vining habit for various garden structures
- Repeat blooming for extended interest
What customers say
Customers consistently express high satisfaction with the Clematis 'Jackmanii', frequently highlighting its exceptional vigor and reliable performance. Gardeners appreciate how readily these plants establish, quickly producing a profusion of striking purple blooms throughout the season. The plant's hardiness and consistent flowering year after year are recurring themes, underscoring its dependability and the enduring beauty it brings to various garden settings. This clematis is celebrated for its robust nature and the ease with which it thrives, delivering a rewarding display.
Know before you buy
This variety belongs to Pruning Group 3, meaning it blooms on new wood. You should prune the vines back hard to about 12 to 18 inches above the ground in late winter or early spring to encourage vigorous new growth and a full display of flowers.
While it thrives in full sun, it can also tolerate partial shade. In hotter climates, providing some afternoon shade can actually help protect the blooms and keep the roots cooler.
Yes, Clematis 'Jackmanii' is cold hardy down to USDA Zone 4. It is a robust, reliable perennial that will return year after year even in colder northern climates.
While it is primarily used for trellises, arbors, and fences, it can be grown in a large container provided you have a sturdy support structure for it to climb. Ensure the pot has excellent drainage and is large enough to accommodate its root system.
Yes, this clematis is considered deer resistant. While no plant is entirely deer-proof if food sources are scarce, deer generally tend to avoid this variety.
You should plan for a height of 7 to 10 feet and a width of 3 to 6 feet. Because of its vigorous vining habit, ensure you have a sturdy support structure like a trellis or fence that can handle its mature size.
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