Quercus robur
Common name: 
English Oak
Pedunculate Oak
KWER-kus RO-ber
Native to (or naturalized in) Oregon: 
  • Broadleaf deciduous tree, 40-60(100) ft [12-15(30) m] tall, often with a similar width, massive, rounded, short trunk.  Leaves alternate, simple, obovate to obovate-oblong, 5-15 cm long, 3-6 pairs of deep rounded lobes, little "ear lobes" at the base of the blade (auriculate), dark green above, bluish green below, short petiole (4-8 mm long); fall color yellow and brown.  Fruit (acorn) 2.5 cm, on a long stalk (5-10 cm), cap covers 1/3-1/4 of the nut.
  • Sun, prefers well drained soil, pH tolerant.
  • Hardy to USDA Zone 4      Native to Europe, north Africa, western Asia
  • The narrow, upright form, 'Fasigiata' (Upright English Oak), is more commonly used in landscaping than the species.
  • robur: ancient Latin name for strong, hard wood, especially oak.
  • Oregon State Univ. campus: southwest corner of Ag. Strand Hall.
Click image to enlarge
  • plant habit

    plant habit

  • plant habit

    plant habit

  • foliage


  • leaves


  • leaves


  • leaf bases

    leaf bases

  • immature fruit and leaves

    immature fruit and leaves

  • mature fruit and leaves

    mature fruit and leaves

  • fruit, fall

    fruit, fall

  • plant habit and leaves, fall

    plant habit and leaves, fall

  • leaves, fall

    leaves, fall

  • trunk, bark

    trunk, bark

  • winter twigs, buds

    winter twigs, buds