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Clematis 'Jackmanii'

Jackmanii Clematis Featured Image

Deer Resistant IconHummingbird Icon

Plant Type: Clematis

A large flowered variety, blooms measure 5-6" in diameter. Solid deep purple flowers with prominent, creamy yellow stamens. Blooms profusely from June to October. A long-time favorite due to its vigorous growth habit and consistent flowering ability. Beautiful when grown through ivy up a wall or fence.

A member of:
Group 3+Late flowering cultivars

Though their growth habit makes them difficult to prune, it can be done in late winter or early spring. All shoots can be cut back to the previous year's wood, just above the base of the plant. This pruning is necessary to avoid getting a bare stem with a thick tangle above it. The spring flowers will be eliminated for that year, but the late summer flowers should still be produced. Alternatively, if you don't want to cut the entire plant back all at once, pruning can be done in stages over a period of 3 years. Each year, prune back 1/3 of the stems to 6-9 inches above a couple of well-developed buds.


Growing & Maintenance Tips:


Clematis can be grown in full sun or light shade, but its base and roots must be completely shaded. You may need to plant a small shrub or large perennial directly in front of its rootball to keep it cool and shaded. Though their growth habit makes them difficult to prune, it can be done in late winter or early spring. All shoots can be cut back to the previous year's wood, just above the base of the plant. This pruning is necessary to avoid getting a bare stem with a thick tangle above it. The spring flowers will be eliminated for that year, but the late summer flowers should still be produced. Alternatively, if you don't want to cut the entire plant back all at once, pruning can be done in stages over a period of 3 years. Each year, prune back 1/3 of the stems to 6-9 inches above a couple of well-developed buds.

Flower Color

Deep purple with creamy stamens

Foliage Color

Green

Plant Spread

Good Companions

Aster-New York (Aster dumosus), Bee Balm (Monarda ), Black-Eyed Susan (Rudbeckia fulgida), Coneflower-Purple (Echinacea purpurea), Iris-Tall Bearded (Iris ), Phlox-Tall Garden (Phlox paniculata), Rose Mallow (Hibiscus ), Shasta Daisy (Leucanthemum superbum), Speedwell-Spike (Veronica spicata)

Plant Height

8-12 ft.

Scape Height

Hardness Zone

4-8

Soil Moisture

Average water needs

Characteristics & Attributes


Attributes

Climbing, Cut flower or foliage, Border, Specimen

Bloom Time

June to October

Critter Resistance

Deer and rabbit resistant

Exposure

Full sun to part shade

Growth Rate

Medium

Seasonal Interests