Plant Focus

Hybrid Highlight: Quercus ×heterophylla F. Michx.

By Ryan Russell | August 1, 2016

Quercus-x-heterophylla_6-Andreas Gomolka

Named in honor of one of America’s first botanists, John Bartram, Quercus ×heterophylla is known by many as Bartram’s oak.

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Species Spotlight: Quercus ilicifolia Wangenh.

By Rebecca Dellinger | June 4, 2016

Quercus ilicifolia is a little oak with a big name: bear oak.

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Species Spotlight: Quercus crassifolia Bonpl.

By Roderick Cameron | January 26, 2016

Quercus crassifolia is tree ranging in height from 4 to 15 meters, and is usually easily recognized by its leaves: stiff and leathery, glossy blackish green above, covered with a layer of pale brown hairs beneath, and with bristle-tipped teeth above the widest part of the leaf.

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Species Spotlight: Quercus rotundifolia Lam.

By Website Editor | March 8, 2015

A Mediterranean oak with a long-standing relationship with humanity.

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Species Spotlight: Quercus georgiana M.A. Curtis

By Ryan Russell | November 18, 2014

Georgia oak is known from 15 counties in Georgia and possibly small pockets in Alabama, with an unverified report in North Carolina. One of these locations is Stone Mountain, just northeast of Atlanta, GA

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Species Spotlight: Quercus austrocochinchinensis Hickel & A. Camus

By Website Editor | March 4, 2014

Propagation and reintroduction of an endangered oak: Quercus austrocochinchinensis. An article by Qian-sheng Li and Min Deng, orginally published in Oak News & Notes, Vol. 18. No. 1

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Species Spotlight: Quercus pubescens Willd.

By Thierry Lamant | March 23, 2013

Quercus pubescens Willd. is a species with a wide native range, found across the European continent, from Portugal to Lebanon and from Russia into Southern Germany.

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A new species of oak, Quercus delgadoana

By Website Editor | July 2, 2011

An oak in cultivation as Quercus eugeniifolia has now been described as a new species, Quercus delgadoana S. Valencia, Nixon & L. M. Kelly (Novon June 2011)

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Pleistocene clone of Quercus palmeri Engelm.

By IOS Site Admini... | July 1, 2010

The distribution of Palmer's oak (Quercus palmeri Engelm.) includes numerous isolated populations that are presumably relicts of a formerly larger range that has contracted due to spreading aridity following the end of the Pleistocene.

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Editor's Picks

Yoko’s Oaks

"Japanese oaks" planted at Coventry Cathedral

Steve Potter | Dec 21, 2025

Post-Conference Tour: Oaxaca

Six days exploring Oaxaca’s oak diversity, as reported by...

Wally Wilkins | Dec 10, 2025

One of the first planted circles on Hampton Common, London, in partnership with Orleans House Gallery 2025. © Studio Ackroyd & Harvey

Virtuous Circles: Oaks and the Art of Ackroyd & Harvey

Oaks planted in circles as a continuation of the artwork...

Steve Potter | Dec 10, 2025

Species Spotlight: Quercus castaneifolia C.A.Mey

Chestnut-leaf oak in habitat and in cultivation