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Defynnog Yew

Defynnog Yew
Defynnog Yew. / Peter, Flickr / CC BY 2.0

WorldBlue  In short

At the medieval St Cynnog’s church in the little Defynnog village is located a wonder of nature – a giant yew tree with a circumference of 10.06 m in its narrowest place. There are several large yew trees in Defynnog, but this is the largest and thus here it is named simply – Defynnog Yew.

4 out of 10 stars 39.8%

GPS coordinates
51.9397 N 3.5648 W
Location, address
Europe, United Kingdom, Wales, Powys, Maescar community, in Defynnog, at St Cynog’s Church
Species
European Yew (Taxus baccata L.)
Circumference
10.06 m at ground level (2014), 11.5 at 1.5 m (2011)
Age
Between 1300 and 3000 years

Map of the site

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WorldYellow In detail

Defynnog Yew and church graveyard
Defynnog Yew and church graveyard. Vaguely seen the largest – main trunk to the right and the smaller trunk to the left. / Peter, Flickr / CC BY 2.0

There are four large yew trees in the churchyard of the medieval St Cynnog’s Church but, by far the best known and largest stands in the central part of the graveyard.

It is characteristic that the circumference of old yew trees is quite hard to measure – trees have several trunks, the trunks are gnarled, with additional branches and with hollows. The trunk of Defynnog Yew is exactly like this. As a result, at the ground level, its circumference is 10.06 m (2014) (2), at 1.5 m – some 11.5 m (1). When measuring the circumference of the tree trunks, as a basis is taken the narrowest place until the height of 1.3 m – thus the more exact result is the smallest: 10.06 m.

The other trunk nearby is also very large: its circumference is 6.29 m (2).

This giant tree over the last decades has been declared to be 5 000 years old, a kind of Tree of Life! But closer look leads to a somewhat less sensational age (2).

Most discussions are linked to the fact that close to the largest trunk stands the other, 6.29 m large trunk. Both trees form a joint canopy and also genetic analysis shows that both trunks belong to a single tree.

Thus: if both trunks would be fragments of a single trunk of a once enormous tree, then its age would be fantastic: around 5 000 years!

But, almost certainly, the smaller tree has been formed by layering, when a branch of the older tree reaches the ground and then grows its own trunk.

As a result – the age of the largest tree could be at least 1 300 years but not more than 3 000 years. (2). Which is a huge lot!

References

  1. European Yew near the border of the church St. Cynog, Defynnog, Wales, United Kingdom, Monumental Trees. Accessed on February 19, 2022
  2. Toby Hindson, Addressing the claim that the Defynnog yews in Powys may be 5,000 years old, Ancient Yew Group (AYG). Accessed on February 19, 2022

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