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IOS Tour of California, Part 1: Northern California

By Chris Reynolds | October 30, 2024
Group by Sequoiadendron giganteum

From Davis to Los Angeles

IOS Tour of California, Part 2: Southern California

By John Leszczynski | October 30, 2024
Group photo at Otay Mountains

From Los Angeles to the Otay Mountains

IOS Tour of Oregon, September 2023

By Website Editor | October 19, 2023
Tour Participants on Fiddler Peak

An account of the Tour guided by Sean Hogan

2022 Pre-Conference Tour: Western Texas

By Philip Crim | October 13, 2022
Group at salt flats near Guadalupe Mountains National Park

San Antonio to Las Cruces: oaks and more

2022 Pre-Conference Tour: New Mexico

By Mark Coggeshall | October 12, 2022
Group under Mangas Mountain Gambel oak

Oaks and other attractions, from Albuquerque to Las Cruces.

2022 Post-Conference Tour: Arizona

By Wally Wilkins | October 12, 2022
Group at Tortilla Flat

Four days with the oaks of Arizona

Scouting for Quercus welshii

By Cindy Newlander | July 31, 2022
Quercus welshii on dunes site south of Kayenta, Ariz.

A threatened oak found in northern Arizona and southern Utah.

2018 Post-Conference Tour #1: San Francisco Bay Area

By Roderick Cameron | December 16, 2018
img_20181026_102717.jpg

Highlights of this tour included: University of California Botanical Garden at Berkeley, Long Ridge Open Space, Stanford oak woodland, and Apple Park.

Pages

Editor's Picks

Quercus sp. Ardnamurchan Peninsula
Oaks in Scotland: An Unresolved Question?
Is Q. robur invading Q. petraea populations or is it the...
Steve Potter | Apr 17, 2025
Acorn of Quercus carduchorum
Species Spotlight: Quercus carduchorum K.Koch
A rare species from the Zagros forests in Iran
Website Editor | Apr 17, 2025
Compton Oak in 2023
The Origin, Locations, and Date of Planting of Colonial Williamsburg’s Compton Oak
The landmark oak was found as a naturally occurring hybrid
Ricklin Brown | Apr 05, 2025

Plant Focus

Quercus kotschyana fruit and leaves in Jaj cedars nature reserve
Species Spotlight: Quercus kotschyana O.Schwarz
A rare oak endemic to Lebanon.
Read more

Trip Reports

IOS Tour of California, Part 1: Northern California

By Chris Reynolds | October 30, 2024
Group by Sequoiadendron giganteum

From Davis to Los Angeles

IOS Tour of California, Part 2: Southern California

By John Leszczynski | October 30, 2024
Group photo at Otay Mountains

From Los Angeles to the Otay Mountains

IOS Tour of Oregon, September 2023

By Website Editor | October 19, 2023
Tour Participants on Fiddler Peak

An account of the Tour guided by Sean Hogan

2022 Pre-Conference Tour: Western Texas

By Philip Crim | October 13, 2022
Group at salt flats near Guadalupe Mountains National Park

San Antonio to Las Cruces: oaks and more

2022 Pre-Conference Tour: New Mexico

By Mark Coggeshall | October 12, 2022
Group under Mangas Mountain Gambel oak

Oaks and other attractions, from Albuquerque to Las Cruces.

2022 Post-Conference Tour: Arizona

By Wally Wilkins | October 12, 2022
Group at Tortilla Flat

Four days with the oaks of Arizona

Scouting for Quercus welshii

By Cindy Newlander | July 31, 2022
Quercus welshii on dunes site south of Kayenta, Ariz.

A threatened oak found in northern Arizona and southern Utah.

2018 Post-Conference Tour #1: San Francisco Bay Area

By Roderick Cameron | December 16, 2018
img_20181026_102717.jpg

Highlights of this tour included: University of California Botanical Garden at Berkeley, Long Ridge Open Space, Stanford oak woodland, and Apple Park.

Pages

The International Oak Society acknowledges the generous support of the following institutions:

Supporting Institutional Members

Denver BG Logo
The Morton Arboretum logo
San Antonio Botanical Garden logo
 

Standard Institutional Members

Bartlett Tree Experts logo
Catalina Island Conservancy logo
Forrest Keeling Nursery logo
Houston Botanic Garden logo
San Diego Botanic Garden logo
San Diego Zoo Wildlife Alliance logo
The Huntington
The John Fairey Garden