Early Large-flowered Group (D.T. Poulsen 1970) – Large creamy white flowers with yellow stamens, tinged green in cooler late spring temperatures or part shade. Vigorous grower. Flowers late spring to early summer and late summer. Height: 10 feet, Prune light (2), Zones: 4-9, Sun/ Part Shade. Alternatives: Henryi, Marie Boisselot |