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(What's my zone?)
Zone: 4 to 9Perennial
|Blooms mid-summer to late summer|
Cultivar Notes - 'Blue River II'
Huge, dinner plate sized flowers sit atop robust, shrub-like plants from mid to late summer. 'Blue River II' is especially long-blooming. Each successive spring will bring larger flowers. This variety produces pure white flowers with no contrasting eye.
Genus Notes - Hibiscus
Hardy hibiscus form large bushy plants. They bloom mid- to late-summer and have absolutely huge, glorious crepe paper-like flowers. They grow best in full sun in moist soil. Hibiscus are very late to break dormancy and need temperatures above 50°F before growth will appear.