Jackman Clematis

Jackmanii Clematis Adds Dramatic Purple Flair

The Jackmanii Clematis (Clematis x jackmanii) is a legendary garden performer beloved for its stunning deep purple blooms and vigorous vining habit. This hybrid Clematis, introduced in 1862, is one of the oldest and most popular large-flowered Clematises in cultivation today!

Jackmanii is a reblooming variety that bursts into bloom in early to mid-summer and often returns for an encore in late summer. Each flower boasts a royal richness, up to 6 inches across, and is adorned with velvety petals surrounding creamy stamens!

This deciduous woody vine grows 8 to 12 feet tall and about 3 to 6 feet wide, quickly covering supports with its twining leaf stalks. The leaves are compound with 3 to 5 leaflets, in a dark, lush green hue that provides an elegant backdrop for the saturated purple blooms!

Key Features

• Large, royal purple flowers up to 6 inches wide
• Reblooms from early summer to late summer
• Deciduous woody vine that grows 10–12 feet tall
• Cold-hardy in USDA zones 4–8
• Loved for trellises, obelisks, and fences
• Old heirloom garden hybrid introduced in 1862

Landscaping Uses

A showstopper on trellises, fences, or obelisks. Its name is synonymous with climbing garden beauty and Victorian garden tradition. Jackmanii symbolizes ingenuity, mental prowess, and artistic creativity, all fitting for such a regal climber.

• Train on arbors, pergolas, and obelisks for vertical flair
• Cover unsightly fences or walls with regal blooms
• Pair with Climbing Roses for classic cottage garden romance
• Let it scramble through shrubs for naturalistic whimsy
• Grow in large containers with a trellis for patio appeal and height
• Combine with other Clematis for a continuous bloom show!
• Pollinator favorites and gorgeous cut flowers

Care and Maintenance

Jackmanii Clematis is a deciduous woody vine that is easy to grow once established. It’s sun-loving, fast-growing, and adaptable across many conditions with a few tricks from Ma Nature.

Although it goes dormant in winter, it re-emerges each spring ready to climb again, and unlike some Clematises, it blooms on new wood, making pruning a breeze. Jackmanii Clematis is a hardy hybrid from England, bred from Clematis lanuginosa, Clematis viticella, and other wild species. It thrives in USDA growing zones 4 through 9, showing excellent cold-hardiness and moderate heat tolerance.

• Planting Time: Spring or fall. Read how to Grow and Train Clematis Here!
• Sun Needs: Full sun to part shade (blooms best with 6+ hours of sun)
• Soil Needs: Moist, well-drained soil; avoid heavy clay unless amended; prefers neutral to slightly alkaline pH
• Moisture Needs: Moderate; keep evenly moist but never soggy
• Arborist Mulch: Use a 3–4 inch layer of arborist mulch to cool the roots; consider underplanting with low-growing perennials to shade the root zone. Like most Clematises, it adores cool roots and warm tops, a signature preference of this genus.
• Fertilization Needs: Apply a balanced, slow-release fertilizer in early spring
• Pruning Info: Group 3 Clematis. Cut back hard in late winter/early spring to about 12 inches above ground
• Special Needs/Growing Tips:
• Deer-resistant
• Not usually troubled by pests or disease

Climbing to the Top with Jackmanii

Let Jackmanii Clematis climb straight into your heart and your garden structure. With lush, purple blooms and easy-care habits, this Victorian heirloom brings drama and nostalgia in one magnificent plant. It’s time to let this climber reach new heights in your garden design.

Order now at Nature Hills Nursery and we’ll ship at the proper planting time for your growing zone.

Frequently Asked Questions

Does Jackmanii Clematis bloom all summer?
Yes, it begins blooming in early summer and often reblooms later in the season, especially if deadheaded.

How do I prune Jackmanii Clematis?
It blooms on new wood and belongs to pruning Group 3. Cut back hard in late winter to early spring to about 12 inches tall.

Is Jackmanii Clematis fragrant?
No, it is not fragrant, but its massive, deep purple blooms more than make up for it in beauty!

Can Jackmanii Clematis grow in shade?
It prefers full sun for best flowering, but will tolerate part shade. Ensure the root zone stays cool.

What is the best support for Jackmanii Clematis?
Trellises, fences, obelisks, arbors, and pergolas all work well; any structure it can cling to with its leaf petioles.

Is Jackmanii Clematis deer resistant?
Yes, it is generally considered deer-resistant once established.

What plants grow well with Jackmanii Clematis?
Try pairing with Roses and Climbing Roses, Honeysuckle, or other Group 3 Clematis for bloom layering and visual contrast.

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