Year of 2017


042817
An oak tree seedling

Happy Arbor Day! The first observance of this holiday in the US was in Nebraska, on April 10, 1872, when participants planted one million trees. It’s now celebrated nationwide, and has been adopted by countries around the globe, which mark it at different times of the year depending on local tree-planting seasons. Maybe you can celebrate by nursing a tiny sprout from an acorn, like the one in this image, into a mighty oak.



An oak is a tree or shrub in the genus Quercus of the beech family, Fagaceae. There are approximately 600 extant species of oaks. The common name “oak” also appears in the names of species in related genera, notably Lithocarpus, as well as in those of unrelated species such as Grevillea robusta and the Casuarinaceae. The genus Quercus is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa. North America contains the largest number of oak species, with approximately 90 occurring in the United States, while Mexico has 160 species of which 109 are endemic. The second greatest center of oak diversity is China, which contains approximately 100 species.
Scientific name: Quercus
Biological classification: Genus
Consists of: White Oak · Northern Red Oak · Quercus robur · Quercus palustris · Southern Live Oak · Bur Oak · Quercus ilex · Quercus suber · Quercus nigra · Quercus velutina · Quercus stellata · Quercus bicolor · Quercus montana · Scarlet Oak · Quercus petraea
Belongs to: Fagaceae

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