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In urban and suburban settings, care should be taken not to inflict mower damage on the trunk or roots, as this increases the tree's susceptibility to disease and pest pressure. [13]: 98–100 The common flowering dogwood has been placed on the endangered species list in Ontario.
Discula destructiva is a fungus in the family Gnomoniaceae which causes dogwood anthracnose, affecting populations of dogwood trees native to North America. [1]It was introduced to the United States in 1978 and is distributed throughout the Eastern United States and the Pacific Northwest.
Dogwood trees – which are susceptible to a fungal infection known as dogwood anthracnose (Discula destructiva) – will sometimes send out epicormic shoots when they are dying from the disease. [8] Similarly, ash trees may develop epicormic shoots when infested by the emerald ash borer. [9] Epicormic shoots can be used in mass propagation of ...
The trunk attains 15–30 centimetres (6–12 in) in diameter. The bark is reddish brown. [6] The branches have fine hairs and the young bark is thin and smooth, becoming scale-like with ridges as it ages. [5] The leaves are opposite, simple, oval, 5–13 cm (2–5 in) long, and 3.8–7.1 cm (1 + 1 ⁄ 2 –3 in) broad. They are green with ...
Cornus foemina is a species of flowering plant in the family Cornaceae known by the common names stiff dogwood [2] and swamp dogwood. [4] [5] It is native to parts of the eastern and southeastern United States. [2] This plant is a large shrub or small tree up to 25 feet tall with trunks up to 4 inches wide. The bark is smooth or furrowed.
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood. The diseased heartwood softens, making trees structurally weaker and prone to breakage.