Improved 'Jackmanii' with extra-large blooms.
Velvety royal purple flowers cover this easy-to-grow vine for montsh every summer. Blooms longer and earlier than 'Jackmanii' with intense purple flower color and large (3-5") flowers. Very easy to grow, it blooms on both new wood and old wood.
Prefers cool, moist, well-drained soils. Prune back to 2 feet in spring and apply a controlled-release fertilizer.