Clematis 'Jackmanii Superba'
Common Name(s):
Clematis
Jackman's Clematis
Synonym:
Clematis x jackmanii 'Superba'
Jackman's Virgin Bower
Flower:
Purple
Blooms :
May
to:
Oct
Flat cup-shaped flowers with 4-6 colored sepals
Botanical Description
Fragrant?
NO
Family:
Ranunculaceae
Vine
Foliage:
Green
Leaves opposite, simple to compound lanceolate
Fall Color?
YES
May flower into fall, has attractive silky seed heads
Deciduous
Photo by:
Heading 6
Seed heads remain on plant
Oregon Native?
NO
West State Native?
NO
Origins:
England
Site Selection
Minimum USDA Hardiness Zone:
4
Water Needs:
M
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
10-12'
Spread:
2-4'
Growth Rate:
Medium
Native Habitat:
Hybrid developed from plants growing in rocky areas
Soil:
Chalk, clay, loam
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Thrives on low nitrogen, high phosphorous fertilizer (5-10-10) applied in early spring
Mulch:
2-3" layer of shredded bark, compost, or wood chips
Cut back to 12-18" above ground in late winter, keep soil moist, fertilize in early spring, mulch heavily to protect roots
Long Term:
Winter:
Cut back to within 8-12" from ground, mulch if not done in fall, avoid overwatering
Spring:
Cut back hard leaving 6-12" of stems, apply balanced fertilizer, apply 2-3" layer of mulch, ensure support is secure
Summer:
Keep soil moist, protect roots, apply fertilizer monthly thru September, watch for pests
Fall:
Ensure plant is hydrated, apply layer of organic mulch around base, remove dead leaves and any debris from around base
General Care Comments:
Keep roots shaded
Common Problems
Poor circulation, high humidity, bare legs (tangled growth) from poor pruning
Diseases:
Clematis wilt, powdery mildew, leaf spot, blotch, root rot
Insects:
Aphids, vine weevils, earwigs, scale, spider mites
Environmental Problems:
None
Pests:
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