Clematis
Clematis (hybrid)
The classic large-flowered garden clematis — represented here by the iconic Jackman hybrid (Clematis x jackmanii), a deciduous twining vine bred in England in 1858 and still the benchmark for the group. It carries an abundance of showy, four-sepaled violet-purple flowers 5-7 inches across from mid summer, climbing 7-10 feet on a trellis, arbor, or fence. The classic gardener rule applies: roots in cool shade, flowers in the sun.
Climate fit: moderate (62/100)
Focal point
Pollinator
Structure
Light
Full sun / Part sun / Part shade
Water
Moderate water
Mature size
84-120" tall · 36" apart
Hardy in zones
4a-9b
very cold to frosty winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native status
Cultivated — no wild native range
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The large showy flowers are insect-visited — the NC State Extension Gardener Plant Toolbox lists Clematis x jackmanii as attracting bees, butterflies, and hummingbirds.
Cold hardiness
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Where this plant fits
Suitable across 41 ecoregions — 40 climate-resilient through 2070 · 1 suited today. Best matches first.
Appalachian mixed mesophytic forests
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Appalachian-Blue Ridge forests
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Arizona Mountains forests
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Atlantic coastal pine barrens
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Blue Mountains forests
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Canadian Aspen forests and parklands
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Central Pacific Northwest coastal forests
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Central Tallgrass prairie
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Central-Southern Cascades Forests
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Chilean Matorral
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Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Sambucus canadensis
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A fast, suckering native shrub of streambanks and moist thickets across eastern North America, grown for huge flat-topped cymes of tiny lemon-scented white flowers in early summer and the clusters of dark elderberry drupes that follow. Spreads by root suckers into naturalized colonies 5-12 feet tall and wide; the flowers feed butterflies and the showy fruit feeds birds. The raw berries are not eaten fresh — they are cooked into jelly, pie, and wine.
Kalmia latifolia
Mountain laurel
A native evergreen shrub of the eastern North American Appalachian + Piedmont understory producing extraordinary spring clusters of pink-to-white cup-shaped flowers with a unique spring-loaded pollination mechanism (anthers held under tension, triggered by visiting pollinators). State flower of Connecticut + Pennsylvania. Critically: NC State explicitly flags Kalmia as having HIGH-SEVERITY poison characteristics — all plant parts toxic to humans, dogs, cats, horses, and livestock; even honey from mountain-laurel nectar can poison humans ("mad honey").
Camellia sasanqua
Sasanqua camellia
Sasanqua camellia is an evergreen shrub native to the forests of southern Japan — Kyushu, Shikoku, and the Ryukyu Islands — where it grows on forest margins and hillsides. In gardens it is prized as the earliest-flowering camellia, bearing fragrant blooms from September through January when almost nothing else is in flower, and it tolerates more sun and drought than its cousin Camellia japonica. The honest catch is cold hardiness: open flowers are blackened by hard frost, and the plant itself is reliably hardy only from zone 7a south, making it unsuitable for much of the northeastern and midwestern United States without meaningful shelter.
Trachelospermum jasminoides
Star jasmine
Star jasmine is an evergreen woody climbing vine native to eastern and southeastern Asia - Japan, Korea, southern China, and Vietnam - where it twines into forest margins and scrub. In gardens it is prized for intensely fragrant pinwheel-shaped white flowers in late spring to early summer and year-round glossy foliage, earning the RHS Award of Garden Merit. The honest catch is hardiness: it is reliable only in USDA zones 8-11 (the RHS rates it H4, roughly -10 to -5C), so growers in zone 7 and colder face repeated dieback or outright loss in a hard winter, and in the warmest zones its vigour tips into aggressive coverage that can smother smaller plants.
Ilex verticillata
Winterberry
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Eutrochium purpureum
Sweet Joe-Pye weed
A tall native perennial wildflower of moist meadows and woodland edges across eastern North America, producing large domed clusters of vanilla-scented pink-purple flowers in late summer — among the most reliable late-season nectar sources for monarchs, swallowtails, skippers, and native bees. Formerly classified as Eupatorium purpureum.
Educator packet
Plant packet
Clematis educator packet
The classic large-flowered garden clematis — represented here by the iconic Jackman hybrid (Clematis x jackmanii), a deciduous twining vine bred in England in 1858 and still the benchmark for the group. It carries an abundance of showy, four-sepaled violet-purple flowers 5-7 inches across from mid summer, climbing 7-10 feet on a trellis, arbor, or fence. The classic gardener rule applies: roots in cool shade, flowers in the sun.
Scientific name
Clematis (hybrid)
Plant type
perennial
Hardiness
4a-9b
Light
full-sun, part-sun, part-shade
Moisture
moderate
Spacing
36 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Clematis (Clematis (hybrid)). Retrieved 2026, June 30, from https://plotwright.com/plants/clematis-hybrid
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
Missouri Botanical Garden PlantFinder
Botanical research database
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
Growth stages
Lifecycle
Regional guidance
Success tips
Designer notes
Wikimedia Commons
Photo · Public domain (no attribution legally required
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