Hibiscus syriacus ‘Diana’

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USDA Hardiness zone: Zn5a -15º to -20ºF

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Bred and released from the National Arboretum this is perhaps one of the very best hardy Hibiscus shrubs for our climate. Enormous pure white flowers up to 4″ across  begin in July and repeat until October. This cultivar was selected not only for its blooming power but for its lack of ugly seed heads. To 8′ tall by 4′ wide in 6 years. Full sun and deep but infrequent irrigation in summer improves performance. Moderately fast growing deciduous shrub that will handle quite a bit of drought once established. Fall color is yellow to non-existent. A very showy shrub at a great time of the year. Opulent large tropical like blossoms. Shrub borders, with Crape Myrtles whose bloom is simultaneous. This superior variety can be difficult to locate. We’re going to change that.

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