Jackmanii Superba Purple Clematis

Jackmanii Superba is a vigorous, deciduous clematis with large violet-purple flowers and a long summer display. It is described as a more floriferous selection related to the classic Jackmanii clematis, with broader, more rounded flowers. The climbing stems need a firm support and can add vertical color to a fence, arbor, or trellis. ## Flowers and placement The [RHS profile](https://www.rhs.org.uk/plants/29426/clematis-jackmanii-superba-ambig-2-ll/details) describes deep violet flowers from midsummer into autumn and a mature height of 2.5–4 m. [Plant Addicts](https://plantaddicts.com/jackmanii-superba-clematis) gives a 10–12 ft height, 2–3 ft spread, and zones 4–8; its care notes recommend sun on the vine with shade around the roots. ## Maintenance This cultivar flowers on new growth and is treated as pruning group 3. Cut back hard in late winter or early spring, and keep the root area cool and evenly moist in well-drained soil. Tie new stems onto their support as they extend.