Compiled by Ryan Russell for the International Oak Society,
International Cultivar Registration Authority (ICRA) for the genus Quercus

This database, initially designed and compiled by Piers Trehane, is freely available for checking the status of oak names. Over the past years the general layout of the site been changed to improve navigation and there are many new features. Click on the "What's New" button above to find out more. Descriptive and historical information on oak cultivars will continue to be added over the year. Please revisit these pages from time to time to keep up to date with the data. The compiler would be glad to hear of any omissions and errors: please use the feedback button at the top of a page to contact him.