Niobe Clematis. Stunning Red Blooms in Summer Large 8" Dark Red Flowers Profusion of Blooms Late Spring through Summer Grows Vigorously in Full Sun The Clematis 'Niobe' has dark red petals with gold anthers that blooms in June to July and range in height of 6-8' and has a spread of 1-2'. The red flowers are approximately 6-8' wide. Clematis 'Niobe' received the Award of Garden Merit from the Royal Horticultural Society and one can see why! The prominent dark red flowers of on Clematis Niobe are outstanding and bloom... - Niobe Clematis. | 
