![Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox](https://s3.amazonaws.com/eit-planttoolbox-prod/media/images/Quercus_petraea_frui_2d0v7DMDWn5W.jpg)
Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox
![Quercus petraea, the Irish oak tree, national tree of Ireland, in Corkagh Park, Dublin, Ireland Stock Photo - Alamy Quercus petraea, the Irish oak tree, national tree of Ireland, in Corkagh Park, Dublin, Ireland Stock Photo - Alamy](https://c8.alamy.com/comp/F128TR/quercus-petraea-the-irish-oak-tree-national-tree-of-ireland-in-corkagh-F128TR.jpg)
Quercus petraea, the Irish oak tree, national tree of Ireland, in Corkagh Park, Dublin, Ireland Stock Photo - Alamy
![Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox](https://s3.amazonaws.com/eit-planttoolbox-prod/media/images/Quercus_petraea_Bark_ZdZ27rFXXPqB.jpg)
Quercus petraea (Cornish Oak, Durmast Oak, Irish Oak, Oaks, Sessile Oak) | North Carolina Extension Gardener Plant Toolbox
![135th Degree on X: "The Brian Boru oak tree in Co. #Clare is said to be one of top five oldest trees in the country. With a girth of 26 feet, it 135th Degree on X: "The Brian Boru oak tree in Co. #Clare is said to be one of top five oldest trees in the country. With a girth of 26 feet, it](https://pbs.twimg.com/media/EU2mSY7XkAAdN3x.jpg)