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Editor's Picks

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An intercontinental artifical hybrid raised at Arboretum...
Roderick Cameron | Apr 12, 2020
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David More shares some of his magnificent illustrations of...
David More | Apr 08, 2020
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A project aims to recover and restore habitats in Serra de...
Justin Roborg-Söndergaard | Apr 07, 2020

Plant Focus

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First described by the Japanese botanist Bunzō Hayata in 1913, Quercus hypophaea is a medium to large evergreen oak restricted to the...

Plant Focus

Hybrid Highlight: Quercus ×vilmoriniana A.Camus

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An intercontinental artifical hybrid raised at Arboretum national des Barres.

Species Spotlight: Quercus hypophaea Hayata

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First described by the Japanese botanist Bunzō Hayata in 1913, Quercus hypophaea is a medium to large evergreen oak restricted to the southeastern part of Taiwan.

Species Spotlight: Quercus tarokoensis Hayata

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Quercus tarokoensis (local name 太鲁阁栎 tai lu ge li, "oak of Taroko") is a fairly unknown oak species, restricted to eastern Taiwan.

Cultivar Close-Up: Quercus 'Maya' and 'Zehra'

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There are a growing number of unique hybrid selections that feature Quercus rysophylla as one parent.

Hybrid Highlight: Quercus ×ludoviciana Sarg.

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Quercus ×ludoviciana is a naturally occurring oak hybrid from southeastern United States, which has flourished and attracted attention in collections worldwide. Over the years there has been some confusion regarding the hybrid’s parentage, but it is currently accepted to be a cross of Q. phellos (willow oak) and Q. pagoda (cherrybark oak).

Cultivar Close-Up: Mighty Miniatures

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Dwarf cultivars can be ideal for a small garden. Here are three "mini oaks". 

Hybrid Highlight: Quercus ×dysophylla Benth.

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Originally described as a species, Quercus ×dysophylla is now considered to be of hybrid origin.

Species Spotlight: Quercus look Kotschy

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Quercus look is one of the least-known oaks of the arid mountains of the Middle East. It grows on Mount Hermon and in the Anti-Lebanon Mountains and Lebanon Mountains.

Hybrid Highlight: Quercus ×morehus Kellogg

Quercus ×morehus was initially called Abram’s oak by the author Albert Kellogg in his original 1863 description and was thought to be a unique species at the time (although his description was based on a single specimen). Current taxonomy designates this as a hybrid of Q. kelloggii × wislizeni and is now known as the Oracle oak thanks to Willis Linn Jepson’s book The Silva of California, written in 1910.

Species Spotlight: Quercus douglasii Hook. & Arn.

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Quercus douglasii is an endemic California oak tree, affectionately called “the blue oak”.

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