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Vine · Ranunculaceae Draft — unreviewed

Jackman clematis

Clematis‘Jackmanii’

Classic large-flowered clematis with velvety violet-purple flowers through summer on a trellis, mailbox or shrub.

Size over time

Typical landscape size 2.4–3.6 m (8–12 ft) tall and 0.9–1.5 m (3–5 ft) wide; fast growth, about 3 years to maturity. Intermediate sizes use the planner’s growth curve (k = 0.45) from the #3 install size.

0123mPlanting1.0 × 0.3 mYear 32.5 × 1.0 mYear 103.0 × 1.2 mMature3.0 × 1.2 m

Bloom

Violet-purple flowers, Jun–Aug (northern-hemisphere months; timing shifts with region and season).

Bloom calendar: months each plant is in bloom
PlantJFMAMJJASOND
Jackman clematis : Jun–Aug

Design notes

  • Shade the root zone and keep the top in sun.
  • Group 3 pruning: cut all stems to 30 cm in late winter.

Regions

Native range: Garden hybrid.

Not recorded as native to any of the three pilot regions.

Native status describes where the species occurs naturally. It is not a promise that it suits a particular garden; site conditions decide that.

Related plants

Crossvine
Bignonia capreolata · Vine · 9–15 m (30–49 ft)
Barbara Karst bougainvillea
Bougainvillea 'Barbara Karst' · Vine · 3–6 m (10–20 ft)
Trumpet creeper
Campsis radicans · Vine · 9–12 m (30–39 ft)
Carolina jessamine
Gelsemium sempervirens · Vine · 3–6 m (10–20 ft)
Climbing hydrangea
Hydrangea anomala subsp. petiolaris · Vine · 9–15 m (30–49 ft)
Coral honeysuckle
Lonicera sempervirens · Vine · 3–6 m (10–20 ft)

Plan with Jackman clematis

Place it in a design, check it against your zone, light and moisture, and see it at year three and year ten.

Start designing Try a sample garden