Clematis Happy Jack
Clematis Happy Jack

Clematis Happy Jack

A carefree, profuse bloomer, Happy Jack Clematis brings velvety plum-purple 5″ blossoms to the garden for months on end. This early and long-flowering beauty blooms from mid-summer into fall. An improved C. jackmanii, you can expect a vigorous, healthy vine with intense color and blooming power. Excellent growing on trellises and arbors, over walls and in containers. It makes a wonderful companion to roses. It grows 6-8′ tall. Happy Jack Clematis blooms on new and old wood. Vines should be cut back to 2′ in early spring. For best results apply fertilizer in spring.


Additional Information

Botanical Name

Clematis Happy Jack

Common Name


Bloom Color


Bloom Time

Summer, Fall

Foliage Color


Light Requirements

Part Shade, Sun






Beds, Containers, Cut Flower, Hummingbirds, Long Blooming


Average, Fertile

Water Needs

Average, Consistent



Plant Type


Clematis Growing Tips

Most clematis prefer full sun or light shade, although there are many that prefer more shade. Clematis need cool roots that are shaded. Plant a small shrub or large perennial directly in front of it to shade roots. A thick layer of mulch will also help to keep the soil moist. This vine prefers to be grown in moist, well-drained soil. Plant Clematis 3″ deeper than it was in the original pot. Bury the first set of entire leaves to encourage the production of strong shoots from below soil level and to discourage clematis wilt.