Plant Focus

Cultivar Close-Up: Quercus aliena 'Lutea'

By Roderick Cameron | October 11, 2021

A gold-leaf cultivar of a Japanese oak is popular in Australia

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Species Spotlight: Quercus infectoria subsp. veneris (A. Kern.) Meikle

By Jean Stephan | October 10, 2021

Figure 2: Lobed leaves of Boissier oak covered with honeydew, Baskinta, Lebanon

Boissier oak was originally named Quercus boissieri Reut. and later Quercus boissieri var. latifolia (Boiss.) Zohary, but the current accepted name is Q. infectoria subsp. veneris (A. Kern.) Meikle

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Hybrid Highlight: Quercus ×comptoniae Sarg.

By Roderick Cameron | June 16, 2021

The Compton oak at Colonial Williamsburg

A natural hybrid between Quercus lyrata (overcup oak) and Q. virginiana (Southern live oak)

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Cultivar Close-Up: Quercus ‘New Madrid’, Sorting Out the Confusion

By Ryan Russell | February 9, 2021

Disentangling the cultivar published as Quercus texana ‘New Madrid’

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Species Spotlight: Quercus skinneri Benth.

By Francisco Garin... | December 6, 2020

Quercus skinneri is a Central American oak, distinguished by the large size of its fruit.

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Species Spotlight: Quercus lyrata Walter

By Matt Candeias | October 6, 2020

A guest post by Matt Candeias, host of the In Defense of Plants podcast and blog

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Cultivar Close-Up: Bokrijk Cultivars

By Roderick Cameron | August 14, 2020

Six oak cultivars originally described by Jef Van Meulder in 2014.

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Species Spotlight: Quercus stenophylloides Hayata

By Joeri Strijk | June 8, 2020

Quercus stenophylloides is a medium-sized evergreen oak (15–18 m tall) restricted to central and northern Taiwan.

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Hybrid Highlight: Quercus ×vilmoriniana A.Camus

By Roderick Cameron | April 12, 2020

An intercontinental artificial hybrid raised at Arboretum national des Barres.

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Species Spotlight: Quercus hypophaea Hayata

By Joeri Strijk | April 9, 2020

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.

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Editor's Picks

UK Oak Open Days 2025: Caerhays and Tregrehan

Visits to two gardens with collections of oaks and other...

Stephen Wood | Oct 27, 2025

IOS Service Awards Presented at the 11th IOS Conference

Plaques presented during the Gala Dinner in Oaxaca

Roderick Cameron | Oct 26, 2025

The 11th IOS Oak Conference in Oaxaca

140 participants from 20 countries attended the Triennial...

Nikola Šušić | Oct 25, 2025

Species Spotlight: Quercus vulcanica Boiss. & Heldr. ex Kotschy

An oak endemic to Turkey