Clematis Poseidon (Clematis 'Poseidon') is a breathtakingly beautiful and award-winning large-flowered clematis variety celebrated for its exceptionally large, richly colored violet-blue blooms — magnificent flowers with broad, overlapping petals in a deep, luminous blue-violet tone and a dramatic central cluster of contrasting dark reddish-purple stamens tipped with golden-yellow anthers that create one of the most strikingly complex and visually extraordinary flower centers of any large-flowered clematis. Named for the Greek god of the sea, Poseidon evokes the depth and intensity of ocean blue with its richly saturated, deeply jewel-toned coloring that ranks it among the finest and most visually impressive blue-violet clematis varieties ever introduced. A vigorous and reliable repeat bloomer, Poseidon produces its first lavish flush of spectacular violet-blue flowers in late spring to early summer, followed by a generous second flush in late summer and fall. A recipient of multiple international awards and a prized addition to any serious clematis collection. Plants arrive in 2 inch starter pots, well-rooted and ready to establish in your garden.