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Cherry leaves with a mild shot hole disease infection. Shot hole disease (also called Coryneum blight) is a serious fungal disease that creates BB-sized holes in leaves, rough areas on fruit, and concentric lesions on branches. The pathogen that causes shot hole disease is Wilsonomyces carpophilus. [1]
Bacterial diseases; Bacterial blight Pseudomonas syringae pv.aptata: Bacterial pocket Xanthomonas beticola: Bacterial soft rot: Erwinia carotovora subsp. carotovora: Bacterial vascular necrosis and rot
The genera Brunfelsia, Plowmania, Fabiana, Nierembergia and Petunia furnish garden plants bearing attractive flowers.Brunfelsia and Plowmania are genera of tropical shrubs requiring glasshouse protection in temperate climate areas; Fabiana species are hardy shrubs; Nierembergia species are dwarf, hardy herbaceous perennials or sub-shrubs, and Petunia × atkinsiana has yielded a huge variety of ...
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
This pathogen mainly affects and is most noticeable on the leaves of cherry trees. The most obvious symptom of this disease is the yellowing of leaves before they drop in the early spring. Infected leaves are filled with numerous black lesions that cover an obvious portion of the leaf. [5]
Perforate leaves, sometimes called fenestrate, occur naturally in some species of plants. Holes develop as a leaf grows. Holes develop as a leaf grows. The size, shape, and quantity of holes in each leaf can vary greatly depending on the species and can even vary greatly within a given species.
Its leaves are oppositely arranged, around 2.5 inches long by 1 inch wide, and are light green to medium green with entire margins. The stems and leaves are covered with soft white hairs. The funnel-shaped 5-lobed flowers are about 1.5 to 2.5 inches in diameter and resemble petunias, as does the rest of the plant.
After pollination, a seed capsule forms at the leaf axil where the flower originated. [6] The seeds of Ruellia caroliniensis are dispersed through explosive dehiscence.When the seed capsules of the plant reach maturity (after about two months), they burst open propelling the seeds away from the parent plant.