Sessile Oak

(Quercus petraea)

Sessile Oak (Quercus petraea)

Nikanos

CC BY-SA 2.5

Image By: Nikanos

Recorded By:

Estimated Native Range

Summary

Quercus petraea, commonly known as Sessile Oak, is a large deciduous tree native to a variety of habitats including deciduous woodlands, forest edges, and grasslands across Europe and the Caucasus. It is a member of the white oak section of the genus (Quercus sect. Quercus) and is closely related to the pedunculate oak (Q. robur), with which it shares much of its range. The Sessile Oak can reach heights of 20–40 meters (66–131 feet) and is known for its robust form. The leaves are 7–14 centimeters (2+3⁄4–5+1⁄2 inches) long and 4–8 cm (1+1⁄2–3 inches) broad, with five to six lobes on each side and a short petiole, distinguishing it from the pedunculate oak which has longer stalks. Male flowers are arranged in catkins and emerge in spring, while the fruit, an acorn, is 2–3 cm (3⁄4–1+1⁄4 inches) long and 1–2 cm (1⁄2–3⁄4 inches) broad, maturing in about six months.

The Sessile Oak is valued for its durable wood and ecological importance, providing habitat and food for numerous wildlife species. It is the national tree of Ireland, symbolizing strength and endurance. In cultivation, it is often used for reforestation, as a specimen tree in large landscapes, and for its attractive, lobed foliage. It requires full sun and can adapt to a range of soil conditions, preferring well-drained soils. While it is generally low-maintenance, it can be susceptible to powdery mildew and oak wilt. The tree’s deep root system can make transplantation difficult, but it is not known for aggressive roots that cause damage. It is not typically invasive when grown outside its native range, but care should be taken to ensure it does not outcompete local species.CC BY-SA 4.0

Plant Description

Plant Type: Tree
Height: 100-120 feet
Width: 30-45 feet
Growth Rate: Slow
Flower Color: N/A
Flowering Season: Spring
Leaf Retention: Deciduous

Growth Requirements

Sun: Full Sun, Part Shade
Water: Low
Drainage: Slow, Medium

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Drought Tolerant, Edible*Disclaimer: Easyscape's listed plant edibility is for informational use. Always verify the safety and proper identification of any plant before consumption., Low Maintenance, Rabbit Resistant, Street Planting

Natural Habitat

Native to deciduous woodlands, forest edges, and grasslands across Europe and the Caucasus

Other Names

Common Names: Durmast Oak, Irish Oak, Cornish Oak, Vinter-Eg, Trauben-Eiche, Traubeneiche, Chêne Rouvre, Vintereik, Wintereik, Bergek

Scientific Names: , Quercus petraea, Quercus sessilis, Quercus aesculus, Quercus robur var. petraea, Quercus mespilifolia, Quercus hypoleuca, Quercus moderata, Quercus adriatica, Quercus anglica

GBIF Accepted Name: Quercus petraea (Matt.) Liebl.