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Quercus virginiana, also known as the southern live oak, is an evergreen oak tree endemic to the Southeastern United States. [5] Though many other species are loosely called live oak, the southern live oak is particularly iconic of the Old South.
The interior live oak is a red oak (section Lobatae) in the California Floristic Province (series Agrifoliae). Q. wislizeni hybridizes with California black oak (Q. kelloggii) (= Quercus × morehus, Abram's oak). All California red oaks show evidence of introgression and/or hybridization with one another.
Quercus agrifolia, the California live oak, [3] or coast live oak, is an evergreen [4] live oak native to the California Floristic Province.Live oaks are so-called because they keep living leaves on the tree all year, adding young leaves and shedding dead leaves simultaneously rather than dropping dead leaves en masse in the autumn like a true deciduous tree. [5]
When pruning older trees, prune out dead, weak, diseased and insect-infested branches and also remove low, broken and crossing branches. [19] The quality of pruning has significant effect on the infection by fungal pathogens, which can consequently cause stem disease. [20] Pamphlet entitled; How to prune trees, an example of a pruning resource.
Nowadays, the practice is sometimes used for ornamental trees, such as crape myrtles in southern states of the US. [4] [5] Pollarding tends to make trees live longer by maintaining them in a partially juvenile state and by reducing the weight and windage of the top part of the tree. [6]
Quercus turbinella is a North American species of oak known by the common names shrub oak, turbinella oak, shrub live oak, and gray oak. [4] [5] [6] It is native to Arizona, California, New Mexico, Utah, Colorado, and Nevada in the western United States. [4] It also occurs in northern Mexico. [7] Arizona shrub oak acorns. Quercus turbinella.