Clematis jackmanii 'Superba' prefers a sunny plant for its foliage, while its roots benefit from shade, achievable through mulching or companion planting. Ensure the soil is fertile and well-drained, enriched with organic matter. Support its climbing habit with a trellis or arbor. Prune in late winter or early spring, cutting back to strong buds approximately 12 inches above the ground. Regular watering is essential, particularly during dry periods, to keep the soil consistently moist.