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Jackmanii Purple Clematis
Clematis ‘Jackmanii’
Plant Details
USDA Plant Hardiness Zones: 4a-9b Find Your Zone
Plant Type: Flowering Vine
Height or Length at Maturity: 8-15′ depending on height of structure
Width at Maturity: 3-6′
Spacing: 3-4′ apart to cover fences and walls
Spacing: 3-4′ apart to cover fences and walls
Growth Habit / Form: Climbing, Dense, Twining, Twisted Branching
Growth Rate: Fast
Flower Color: Deep Royal Purple
Flower Type: Single
Flower Size: 5-7″
Flowering Period: Summer and sporadically in Fall
Flowering Period: Summer and sporadically in Fall
Fragrant Flowers: No
Foliage Color: Green
Fragrant Foliage: No
Sun Needs: Full to Mostly Sun, Part Shade, All Day Lightly Filtered Sun
Water Needs: Average
Soil Type: Clay (Amend heavy clay to ensure good drainage), Loam, Sandy, Silt
Soil Drainage: Moist but Well Drained
Soil pH: 5.5 – 7.0
Maintenance / Care: Low
Pruning Group: 2 or 3
Attracts: Butterflies, Hummingbirds, Beneficial Pollinators, Visual Attention
Resistances: Deer, Disease, Heat, Humidity, Insect, Black Walnut
Description
All of our Clematis vines are trellised 2 year old plants in a 1 gallon pot.
The most popular Clematis of all time and one of the most popular of all flowering vines, Jackmanii is an old cultivar that made its way from England to the U.S. back in 1850. It has stood the test of time for very good reasons. A plethora of showy, 5 to 7 inch diameter deep royal purple flowers smother the foliage during summer and sporadically in fall on this exceptionally vigorous yet compact vine that can reach 8 to 15 feet in height depending on the height of the support structure. Excellent for trellises, arches, fences, posts and rails, and the mailbox. If you’re looking for a very dependable, long blooming and showy flowering vine, and you love the color purple, look no further than the Jackmanii Clematis!
Some history…
Clematis ‘Jackmanii’ was introduced in 1862 and is the first late large-flowered hybrid clematis available to gardeners. The vine was named after the nurseryman George Jackman, who created this hybrid by crossing it between Clematis lanuginosa, Clematis viticella, and Clematis × hendersonii in 1858.
Landscape & Garden Uses
Climbing 8 to 15 feet high and spreading 3 to 6 feet or more wide, the Jackmanii Clematis is ideal for growing on fences, trellises, arches, mailbox posts, obelisks, poles, posts and rails, lamp posts and other structures. Excellent for pots, planters and other containers for situating on patios, decks and around other outdoor living spaces. A fine addition to Clematis gardens and purple theme gardens.
Suggested Spacing: 3 to 4 feet apart to cover fences, trellises, and walls
Growing Preferences
This Clematis is easy to grow in a moist but well-drained soil of average fertility and full sun to part shade. Though it tolerates dry periods when established, it will appreciate an occasional watering in prolonged periods of dry weather. Make sure not to plant this one too deep as it tends to smother the plant. See pruning instructions just below.
Clematis Pruning Group 2 or 3
Clematis in Group 2 consist of all the early, large-flowered hybrid clematis that bloom in late spring or early summer and maybe again in late summer. Clematis in this group should be pruned lightly in late winter or early spring. Pruning consists of removing weak and crossing shoots then thinning down the plant to a structure of evenly spaced one and two year old stems. Cut each stem just above a pair of healthy buds. Plants in this group have the tendency to become bare at the base as they mature. You can under-plant with small shrubs or perennials to help conceal the bare stems. Alternatively, you can often force a flush of new growth from the base by cutting the vine back to 18 inches immediately after the flush of bloom. An alternate method of pruning Group 2 clematis is to prune only every three or four years. In this case, the clematis should be pruned as described for Group 3 clematis. This will produce a weak first flush of flowers in the summer after pruning.
Clematis in group 3 consist of late-flowering species that bloom from mid-summer into fall. This group flowers on the last 2 to 3 feet of the current season’s growth (new wood). They are easy to prune because you do not need to maintain any old wood. In February or March, cut each stem to a height of 1 or 2 feet. Although you will be removing good stems and buds, this treatment keeps these vigorous growers in bounds. If not pruned, these vines will quickly become a mass of old diseased woody stems producing very few flowers. Always make sure to leave two good buds below where you make your cut. New growth will emerge from these buds to produce the current seasons vines and blooms.
Helpful Articles
Click on the link below to find helpful advice from our experts on how to plant and care for Clematis vines
How To Plant A Clematis
How To Prune A Clematis
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