Jackmanii has 5-6 in. spectacular, dark, violet-purple, semi-nodding flowers with green stamens that are borne in great profusion from July to October.
- Popular and reliable
- This vine grows best in a fertile, well-drained, alkaline soil
- A choice site is key to the success of establishing this perennial; roots should be kept cool and moist
- The Clematis performs best when sufficient moisture is given and the base of the plant is kept cool