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2. Hydrangea quercifolia - Wikipedia

   en.wikipedia.org/wiki/Hydrangea_quercifolia

   Hydrangea quercifolia is a coarse-textured deciduous shrub growing to 3–12 feet (0.91–3.66 m) [3] tall with an open crown. The plant sprouts shoots from underground stolons and often grows in colonies. Young stems are covered in a felt-like light brown bark, and the larger stems have attractive cinnamon-tan-orange bark that shreds and peels ...

3. Leaf spot - Wikipedia

   en.wikipedia.org/wiki/Leaf_spot

   A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [1] Symptoms can overlap across causal agents, however ...

4. Alternaria alternata - Wikipedia

   en.wikipedia.org/wiki/Alternaria_alternata

   Alternaria alternata. Alternaria alternata is a fungus causing leaf spots, rots, and blights on many plant parts, and other diseases. It is an opportunistic [citation needed] pathogen on over 380 host species of plant. It can also cause upper respiratory tract infections [1] and asthma in humans with compromised immunity.

5. Rhytisma acerinum - Wikipedia

   en.wikipedia.org/wiki/Rhytisma_acerinum

   Rhytisma acerinum. Schwein., (1832) Rhytisma acerinum is a plant pathogen that commonly affects sycamores and maples in late summer and autumn, causing tar spot. Tar spot does not usually have an adverse effect on the trees' long-term health. [1] R. acerinum is an Ascomycete fungus that locally infects the leaves of trees and is a biotrophic ...

6. List of hydrangea diseases - Wikipedia

   en.wikipedia.org/wiki/List_of_hydrangea_diseases

   Bacterial leaf spot Pseudomonas cichorii: Fungal diseases. Fungal diseases; ... Hydrangea ringspot virus: Tobacco ringspot virus Tomato spotted wilt virus:

7. Alternaria leaf spot - Wikipedia

   en.wikipedia.org/wiki/Alternaria_leaf_spot

   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] Some of these fungal species target specific plants, while others have been known to target ...