Clematis 'Neonka' is a cultivar with very striking, single flowers (8-12 cm in diameter). The flowers are deep violet in color with bright yellow stamens in the center. The plant blooms profusely from June to September, and the flowers fluoresce in sunlight. The leaves are trifoliate, elongated, heart-shaped, and light green in color. The plant has strong growth and reaches a height of 200-250 cm. It can be grown along fences, pergolas, and trellises. 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.