Jackman Clematis

Clematis 'Jackmanii Superba'

Nature Hills Nursery

Legendary Deep Purple Blooms up to 6 Inches Wide with Reblooming Summer-To-Fall Color
Cold Hardy: Thrives in Zones 4-8
Grows 10-12 ft Tall, 3-4 ft Wide
Showy Purple Blooms From Early Summer to Late Summer
Deer Resistant, Rabbit Resistant

$26¹¹

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Plant Size

Quart Container #1 Container

Product variants

Planting & Care

Where to Plant

Sunlight: Give this vine a spot with at least six hours of direct sunlight each day for the most abundant purple blooms. While it can handle partial shade, you may notice fewer flowers and slower growth in lower light conditions.
Soil: Plant in rich, well-drained soil that stays cool and moist but never waterlogged. If you have heavy clay or sandy soil, mix in plenty of compost to improve drainage and moisture retention while keeping the roots shaded with a layer of mulch or other plants.

Watering Requirements

Keep the soil consistently moist during the first growing season to help the extensive root system establish. Once established, water deeply during dry spells to prevent the leaves from browning and to support the energy needed for its massive flower display.

Pruning Tips

Jackman Clematis blooms on new wood, so you should prune it hard in late winter or early spring before new growth begins. Cut all stems back to a pair of strong, healthy buds about 8 to 12 inches above the ground. This "hard reset" encourages vigorous new vines from the base, preventing the plant from becoming woody at the bottom with flowers only at the very top.

Fertilizer Needs

Apply a balanced fertilizer or a formula designed for roses or tomatoes in early spring when you see the first signs of green growth. Avoid high-nitrogen fertilizers late in the summer, as these encourage leafy growth at the expense of blooms and can leave tender stems vulnerable to winter damage.

Delivery and Shipping

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Understanding Our Container Sizes

At Nature Hills, our plants are sold in industry-standard nursery containers. You will notice we use the word "container" rather than "gallon." Container numbers follow a nursery trade size standard, not liquid volume. The number tells you the plant's size category and general maturity level. A larger container means a more established plant with a stronger root system.

Container Sizes

Quart

Plant age: 6 months to 1 year
Best for: Ground covers, perennials, ornamental grasses
What to expect: Our smallest and most affordable size. Well-suited for planting in multiples across a large area. Allow 1 to 2 seasons for full establishment.

#1 Container

Plant age: 1 to 2 years
Best for: Shrubs, perennials, smaller trees
What to expect: About the size of a large coffee can. A well-developed root system in a manageable size. Good value choice when you have time to let the plant grow into the space over a season or two.

#2 Container

Plant age: 2 to 3 years
Best for: Shrubs and trees where you want faster establishment
What to expect: A noticeable step up from a #1 in both plant size and root development. Good choice when you want visible presence without going to a larger size.

#3 Container

Plant age: 3 to 4 years
Best for: Most plants, most situations — flowering trees, shade trees, evergreen shrubs
What to expect: Our most popular size. Strong, developed root system. Plants in a #3 container make an immediate visual impact from day one. If you want a head start rather than waiting seasons for a plant to fill in, this is typically the right choice.

#5 Container and Larger

Plant age: 4 to 5+ years
Best for: Specimen plants, privacy screens, maximum instant impact
What to expect: Large, mature plants ready to make an immediate statement in your landscape. We also carry #7 and larger sizes for select varieties.

Why "Container" and Not "Gallon"?

Nursery container sizes follow an industry trade standard established for the nursery and horticulture industry. The number is a size designation, not a measurement of liquid volume. Actual soil volume varies by plant type, root mass, and growing medium. Using "container" is the accurate industry term. When you see #1, #2, or #3, think of it as the plant's size tier, not a gallon measurement.

Root Pouch Containers

Some Nature Hills plants arrive in a Root Pouch, a breathable fabric container made from 100% recycled materials. Root Pouches encourage denser root development through air pruning, which discourages root circling and promotes a stronger, more fibrous root ball at the time of planting.

Plants growing in Root Pouch fabric containers, showing the breathable woven fabric construction

There are two types. Knowing which one you have changes how you plant:

Degradable (brown or tan fabric): Plant the entire pouch directly in the ground. The fabric breaks down naturally in the soil over time.
Non-degradable (black or gray fabric): Remove the pouch before planting. Cut the bottom open with scissors, then peel the sides away. The fibrous root ball will hold its shape.

Not sure which type you have? Check the tag on your plant or contact us and we will confirm.

Full Root Pouch planting guide

Choosing the Right Size

Size	Plant Age	Best For
Quart	6 mo to 1 yr	Ground covers, perennials, grasses. Budget-friendly for mass plantings.
#1 Container	1 to 2 yrs	Shrubs, perennials, small trees. Value choice for patient gardeners.
#2 Container	2 to 3 yrs	Shrubs and trees where you want faster establishment.
#3 Container	3 to 4 yrs	Most plants. Immediate visual impact. Our most popular size.
#5 and larger	4+ yrs	Specimen plants, privacy screens, maximum instant impact.

Still not sure which size is right for your project? Our plant specialists are happy to help. Contact us and we will point you in the right direction.

Plant specifications
Plant Characteristics	Cold hardy, Flowering, Reblooming, Thornless, Attracts pollinators, Container Friendly, Non-invasive
Hardiness Zone	3a, 3b, 4a, 4b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Sunlight	Full sun, Partial shade
Height	10-12 ft
Width	3-4 ft
Watering Needs	Moderate
Preferred Soil	Peaty
Growth Rate	Moderate
Growth Habit	Bushy, Climbing, Spreading
Plant Life Cycle	Perennial
Blooms In	Summer
Flower Color	Purple
Pet Safety	Toxic to pets
Suitable Space	Indoors, Outdoors
Plant Name	Clematis
Botanical Name	Clematis 'Jackmanii Superba'
Species	hybrid
Cultivar	Jackmanii Superba
Class	Magnoliopsida
Does Not Ship To	AK, HI, ID, MT, OR, PR

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.

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Frequently Asked Questions

How do I care for Jackman Clematis, including watering, sunlight, and fertilizer needs?

Jackman Clematis thrives in full sun with consistent moisture and well-draining soil in zones 4-8. This vigorous vine benefits from annual spring fertilizing and prefers its roots cool and shaded while the top growth reaches for sunlight. Mulch the base heavily and provide sturdy support for its 8-12 foot climbing habit.

What are the pruning requirements for Jackman Clematis, and which group does it belong to?

Jackman Clematis belongs to pruning Group 3, requiring hard pruning to 12-18 inches in late winter or early spring. This promotes vigorous new growth and abundant blooms on current-year wood. Cut back after the first hard frost when the vine goes dormant.

Is Jackman Clematis evergreen or deciduous?

Jackman Clematis is deciduous, losing its leaves each winter in zones 4-8. This woody vine dies back seasonally but returns vigorously each spring to reach 8-12 feet tall. Expect fresh green foliage to emerge in spring, followed by those spectacular 6-inch purple blooms in early summer.

How is Jackman Clematis shipped, and what should I expect upon arrival?

Jackman Clematis ships as a dormant bare-root plant or potted vine, depending on season. You'll receive a hardy specimen ready for zones 4-8 that will reach 8-12 feet at maturity. Plant immediately upon arrival and provide sturdy support for this vigorous climber.

What is the warranty or guarantee on Jackman Clematis plants after shipping?

Nature Hills stands behind their Jackman Clematis with a one-year guarantee from shipping date. This hardy zones 4-8 perennial is built to last once established. Contact Nature Hills directly if your plant doesn't thrive in its first season.

Will Jackman Clematis survive winter in cold zones, and how do I protect new shoots?

Jackman Clematis is cold-hardy in USDA zones 4-8 and will survive winter in most cold zones. This deciduous vine dies back naturally in winter, then regrows from the base in spring. Apply 3-4 inches of mulch around the base after the first hard frost to protect the root system.

Is Jackman Clematis deer or rabbit resistant?

Jackman Clematis is not typically deer or rabbit resistant, as these animals often browse on clematis vines and foliage. The vigorous 8-12 foot growth habit means damaged areas usually recover quickly during the growing season. Consider fencing young plants or using deterrent sprays in areas with heavy deer or rabbit pressure.

Jackman Clematis

Clematis 'Jackmanii Superba'