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English oak Quercus robur

Unrivalled king of the forest, the English oak is synonymous with strength, size and longevity. Despite its apparently random method of reproduction, oaks can grow to well over 30m and can live in excess of 1,000 years.

 
Quercus robur

Quercus robur at Kew

Featured Tree

  • Age: -
  • Date planted: -
  • Height: 16m

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Species Information

Conservation Status:

Least concern. 

Place of Origin:

Asia Minor, North Africa, Caucasus and Europe 

Habitat Types:

Scientific Name:

Quercus robur

Of the species of tree native to Britain, the English or pedunculate oak is probably the most well-known and best-loved. This king of the forest can live for more than a millennium according to some sources, and grow up to 40m (125ft). Mature specimens are usually home to many species of wildlife.

Quercus robur is named for its robust or sturdy nature and since iron tools were first made, people have been cutting down this mighty tree for its strong and durable timber. It can take as long as 150 years before an oak is ready to be used for construction purposes but it is well worth the wait.

Until the middle of the 19th century when iron became the material of choice for building ships, thousands upon thousands of oaks were felled every year. It was estimated that it took 2,000 trees to make a single ship, and eventually laws were passed to protect the oak.

For such a huge, long-living and widespread tree, the oak is surprisingly bad at reproducing naturally. Firstly, it can take a full 50 years before the tree has its first crop of acorns, the seed of the oak. Secondly, the overwhelming majority of the tens of thousands of acorns it drops are eaten by animals or simply rot. And so it is left to forgetful squirrels or jays to bury them for future consumption for the lifecycle of this giant of the countryside to continue.

 

Further information:

One of the English oak's most recognisable characteristics is its leaves. Pale green in colour, they have four or five lobes on each side and are attached to the branches at the base, with almost no stalk. In contrast, the acorns can be found at the end of long stalks known as peduncles, hence the name pedunculate oak.

Large, old oaks often have dead branches at the top, or crown. This 'stag head' is quite common and not necessarily a sign that the tree is dying. When water supplies are short, the oak simply opts not to feed its upper extremities and as a result extends its lifespan.

Quercus robur

Quercus robur

Tree Notes

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Field Blog

Lithocarpus from Sarawak, Malaysian Borneo

Whilst walking through the gardens at Kew today, and passing the extensive temperate oak collection along the riverside, I was reminded of the tropical acorns we found on a Kew expedition to Sarawak....

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