Clematis 'Jackmanii'
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JACKMAN'S CLEMATIS, VIRGIN'S BOWER
Family: Ranunculaceae
Pronounced: KLEM-uh-tiss
GROWING GUIDE
Geographic Origin:
Garden.
Plant Group
Vines.
Hardiness
Sunset zones: A2, A3; 2-11, 14-24.
USDA zones: 4-9.
Mature size
Height: 6-10 feet (2-3 m).
Flowering period
July to August.
Flowering attributes
Large, single flower with dark purple sepals and yellow-green anthers.
Leaf attributes
Deciduous, green leaves.
Light
Full sun to partial shade.
Soil
Fertile, humus rich, well-drained soil.
Feeding
Mulch well with composted manure or compost. Fertilize once a month with a complete organic fertilizer during the growing season.
Propagation Methods
Layer branches in late winter. | Basal and softwood cuttings in spring. | Division in spring. | Semi-ripe cuttings in early summer.
Pruning Methods
Pruning group 3 or C.
Rainy Side Notes
I grew this years ago in another garden. It was beautiful climbing up on my back deck. I miss its deep purple flower in summer.
Clematis 'Jackmanii' was introduced in 1858 and raised by George Jackman and his son, England. In 1863 it was awarded the Royal Horticultural Society's First Class Certificate. Over a hundred years later, it was given the RHS Award of Garden Merit.
My references give me conflicting reports on C. 'Jackmanii's' parentage. One source says it is a cross between C. lanuginosa and C. viticella. Another source says C. lanuginosa, C. 'Hendersoni', and C. 'Atrorubens'. Much like some litters of puppies, we aren't sure who the papa is.
This vine is often used in garden restorations. It is a great clematis to use in cottage or Victorian gardens.
Debra Teachout-Teashon
Photographed in author's garden.
Additional Reading
Planting and Care of Clematis.
Book Recommendation: Gardening with Clematis : Design & Cultivation
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