Agriculture > All Agriculture > ANR-1212

Diseases of Hydrangea
Austin Hagan, Jacqueline Mullen
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Pages / Length: 8
Publication Date: 11/10/2001

The genus Hydrangea is composed of several native and introduced deciduous shrubs well known for their spectacular floral display and lustrous green foliage. The bigleaf hydrangea (Hydrangea macrophylla), native to Japan, is the most recognized and widely planted in Alabama landscapes. Blossoms of the many cultivars of this hydrangea range from white or pink to deep blue. Many cultivars of bigleaf hydrangea may not be winter-hardy very far above the Gulf of Mexico. The panicle hydrangea (H. paniculata) is also an introduction from Japan and China. The smooth (H. arborescens) and the oakleaf (H. quercifolia) are native to Alabama and are best adapted for use in partially shaded naturalized areas. Unfortunately, diseases can have a significant impact on the appearance, health, and market value of hydrangea. This seven-page publication identifies the common diseases found on hydrangea and recommended control procedures. Includes color photos of symptoms, as well as tables of registered fungicides for individual diseases.