|Grid reference||ST 18462 79210|
|Status||GB Champion 2013|
|Tree trail||Post 9|
|Height||24M February 2015|
|Girth||408cm February 2015|
Quercus x andegavensis is the large spreading tree seen here in leaf mid May. It is on the north west boundary of the Botanic Garden, between the kiosk and the toilets.
General tree description for Quercus x andegavensis
This tree is a naturally occuring hybrid of Quercus robur (Common oak) and Quercus pyrenaica (Pyrenean oak) and it is noted for its rounded crown.
General tree description for Quercus robur
Quercus robur is a large deciduous tree with a wide spreading crown. In maturity it can reach a height of 20 to 40 metres, and a girth of over 4 metres, exceptionally 12 metres. It has a long lifespan and commonly lives to several hundred years old. There are examples of Quercus robur reaching ages of more than a thousand years. The leaves are around 10cm long with 4-5 deep lobes with smooth edges, and they have very short stalks. Flowering occurs in mid spring, and the fruits, in the form of acorns, ripen in autumn. They come singly or in groups of up to three in cups on a slender stalk.
General tree description for Quercus pyrenaica
This is a rare tree, commonly known as Pyrenean oak, and native to south west Europe and north west Africa. It was introduced to Britain in 1822 and grows slowly to 20, or rarely 25, metres in optimal conditions. The leaves are long, up to 20cm, with short petioles (stalks attaching the leaf blade to the stem) and deeply lobed. In spring it is one of the last oaks to come into leaf.