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"Orange spots that form on the bottom or the underside of the leaves are hydrangea rust," read Epic Gardening's hydrangea guide. "The top of the leaf will turn yellow and the leaf will eventually die.
This article is a list of diseases of hydrangeas (Hydrangea macrophylla ... Pseudomonas solanacearum: Bacterial leaf spot Pseudomonas cichorii: Fungal diseases ...
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Alternaria leaf spot or Alternaria leaf blight are a group of fungal diseases in plants, that have a variety of hosts. [ 1 ] [ 2 ] [ 3 ] The diseases infects common garden plants, such as cabbage, and are caused by several closely related species of fungi. [ 4 ]
Stegophora ulmea is a foliar disease of elms commonly known as black spot of elm, twig blight, and elm leaf scab. [1] It is characterized by yellow spots that become black spots on the leaves. The pathogen is an ascomycete fungus native to North America. Stegophora ulmea is its teleomorph name. [2]
The Southern states fall nicely within the winter hardiness zones of hydrangeas, which range from USDA zones 3 to 9 for panicle and smooth hydrangeas, and zones 5 to 9 for bigleaf and oakleaf ...
Hydrangea quercifolia, commonly known as oakleaf hydrangea or oak-leaved hydrangea, is a species of flowering plant in the family Hydrangeaceae. [2] It is native to the southeastern United States, in woodland habitats from North Carolina west to Tennessee , and south to Florida and Louisiana . [ 3 ]