Grow in fertile, medium moisture, well-drained soils in full sun to part shade. Vining hybrids are best sited in locations where the flowering parts of the vine are in sun to part shade but the roots are shaded. Some light afternoon shade is usually beneficial in hot and humid summer climates such as the St. Louis area. This Clematis thrives in full sun to partial shade, with at least 6 hours of sunlight per day ensuring optimal flowering. For best results, provide shade for the plant’s base while allowing the vines and flowers to receive ample sunlight. Preferring moist, well-drained soil, Clematis ‘Jackmanii’ benefits from deep watering once or twice a week. A layer of mulch helps retain soil moisture and keep the roots cool, promoting healthy and vigorous growth. This fast-growing climber can reach 10 to 12 feet in height, making it ideal for covering vertical structures. As a Group 3 Clematis, it requires hard pruning in late winter or early spring, cutting back to about 12 inches above the ground to encourage new growth and prolific flowering. Hardy in USDA zones 4-9, Clematis ‘Jackmanii’ adapts well to a range of climates. In colder regions, applying mulch in winter helps protect the roots, ensuring vigorous regrowth and abundant blooms the following season. The Clematis ‘Jackmanii’ is one of the most beloved and widely grown Clematis varieties, known for its profuse display of rich, velvety purple flowers. Each bloom, spanning 4 to 6 inches across, features a slightly ruffled edge and a contrasting cluster of pale stamens, creating a striking effect against the plant’s deep green foliage. Flowering from mid to late summer, ‘Jackmanii’ is prized for its long-lasting color and reliable performance, making it a standout choice for vertical gardening. This vigorous deciduous climber reaches heights of 10 to 12 feet, effortlessly covering trellises, fences, pergolas, and garden walls with a cascade of vibrant blooms. Its strong yet manageable growth habit allows it to blend beautifully with other climbing plants or serve as a stunning solo focal point in any garden setting. A low-maintenance and hardy perennial, Clematis ‘Jackmanii’ thrives in well-drained soil with consistent moisture. Proper pruning encourages abundant flowering and maintains a healthy, well-shaped plant. Whether you are a seasoned gardener or a beginner, this variety offers unparalleled beauty, reliability, and ease of care, making it an excellent choice for any landscape.