Clematis 39warszawska nike39 has an award of garden merit from the royal horticultural society this clemtis has striking maroon purple flowers up to 10cm 4043441 with 6 45 8 sepals and bright yellow stamens in the centre that bloom in july which are then followed in september with a second display they like full sun locations in the garden making them perfect for obelisk or trellis containers on the patio or decking height 3m 40103941 spread 1m 40339