Clematis ‘Once More’ has large flowers (10-13 cm in diameter) that are a velvety deep violet with a yellow center. The plant can be grown as a ground cover, has vigorous growth, and blooms abundantly from June to the end of August. The leaves are trifoliate, elongated, heart-shaped, and light green in color. Clematis ‘Once More’ is a perennial variety with non-climbing stems. The stems grow up to 150 cm long and produce a large number of flowering short stems along the central stems. This is a very valuable and easy-to-grow new cultivar, recommended to be grown as a ground cover without support. This Clematis was bred by Szczepan Marczynski from Pruszkow (P), and plant breeders' rights have been applied for. Clematis The Source of Good Climbers from Pruszkow (P) submitted the plant for the novelty evaluation.