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Editor's Picks

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The Global Conservation Consortium for Oak (GCCO) has...
Amy Byrne | Feb 17, 2020
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Hayrettin Karaca, an IOS member and one of Turkey's best-...
Roderick Cameron | Feb 10, 2020
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There are a growing number of unique hybrid selections that...
Ryan Russell | Feb 10, 2020

Plant Focus

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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.

Plant Focus

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”.

Species Spotlight: Quercus acutissima subsp. kingii Menitsky

Quercus acutissima subsp. kingii

Quercus acutissima Carruth. is a species whose natural distribution covers a vast territory in East and Southeast Asia, from central Nepal in the west to the Pacific coast of Honshu in the east, and from northern Szechwan to central Burma, northern Thailand, and Laos in the south.

Species Spotlight: Quercus rugosa Née

Given its rugged beauty and hardiness, Quercus rugosa is recommended for gardens, parks, and arboreta in most regions. As it grows naturally in such an extended area and across a variety of habitats and altitudes, there is also scope for further experimentation with seed sourced from different provenances.

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