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The West Virginia state champion bur oak has a trunk diameter of almost 3 m (10 ft). Large bur oaks, older than 12 years, [11] are fire-tolerant because of their thick bark. [10] One of the bur oak's most common habitats, especially in Midwestern United States, is the oak savanna, where fires often occurred in early spring or late fall. Without ...
The leaves are broad ovoid, 12–18 centimetres (4 + 3 ⁄ 4 –7 inches) long and 7–11 cm (2 + 3 ⁄ 4 – 4 + 1 ⁄ 4 in) broad, always more or less glaucous on the underside, and are shallowly lobed with five to seven lobes on each side, intermediate between the chestnut oak and the white oak. In autumn, they turn brown, yellow-brown, or ...
Bur oak blight (BOB) is a fungal disease that is relatively new to the plant pathogen field. BOB started to appear in Midwestern states in the 1990s. The first few diagnoses pointed to a common fungus, Tubakia dryina, as the culprit.
Jumping oak galls are caused by a very tiny, native, stingless wasp (Neuroterus sp.) which lays eggs in leaf buds. As the leaf develops, pinhead-sized galls, also referred to as abnormal plant ...
The size of the tree has made coring and accurate dating difficult. It has been the state champion Bur Oak since 1987. [2] The tree has survived many droughts and floods, including the Great Flood of 1993, when water stood nearly 6.5 ft deep around its trunk. Lightning has struck the tree often, including in October 2020, when a strike lit a ...
5. Low Humidity. Light brown spots scattered across fiddle leaf fig leaves can be caused by dry air. If the brown spots in question have a pox-like look instead of being in a single area of the ...
Oak wilt is a devastating exotic disease, killing some trees rapidly in a single season. [7] Oak wilt is an important disease in urban areas where trees are highly valued. . The disease reduces property values because of the loss of trees and is economically costly to the property owner since they or the local government must pay for tree remo
Conversely, oak groves in wetter areas that historically had closed canopies of large trees are becoming crowded with young oaks that grow thin and spindly, due to lack of fires that would clear out seedlings. [15] Chionodes petalumensis caterpillars feed on oak leaves, including those of Quercus garryana [20] and valley oak (Q. lobata). [21]