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Pedunculate oak Kvilleken in Norra Kvill

There is one pedunculate oak (Quercus robur) Kvilleken in Norra Kvill (municipality of Vimmerby).

This tree is called "Kvilleken". The Kvilleken (Kvill's Oak) or Rumskullaeken, named after the closeby hamlet of Norra Kvill, is Europe's thickest oak. Like all old oak trees, the tree has a hollow trunk, so it is impossible to determine its age by simply counting tree rings.

A part of the trunk must have died off a long time ago and is currently attached to the rest of the trunk using cables, so the tree cannot collapse further. Although many trees claim to be over a thousand years old, a magical age like this is not so unlikely for this particular tree.

The total volume of this tree was calculated to be 60 cubic metres, the third largest volume of all trees (and oaks) of Sweden.

Oldest description in 1774 when Gabriel Graelius measured it's girth to 22 ells, 13.06 in meters. Unknown at which height. It was hollow at that time too and used as a tool shed.

Waldermar Bülow described it 1917, and measured it's girth to 12,75 m, unknown at which height.

Bertil Lindquist, professor in botanics estimated its age to between 750 and 950 years, most likely 850 years, in 1939 by dendrochronology near the center, and comparing growth rate with younger trees in the area with intact trunks.

1997 it was measured to 14,11 m at breast height.

Girth growth rate

The girth was measured more than once:
YearGirth@1.3 mMeasurementGirth growth rate
200014.20 mJeroen Philippona-
200614.75 mJeroen Pater9 cm/year

The growth rate shown in the table shows the yearly average increase in girth since the last measurement. This value only gives an indication of the growth rate, since every measurement could be done at slightly different heights and during different periods of the year. Its height is around 16.00 m (Jul 25, 2000, measurement method unknown, Jeroen Philippona).

Age

The age of the tree was estimated by these persons:
YearPlanting or germination yearAgeMeasurement
Oct 1, 20111500514 yTim B
Apr 4, 20141089 ± 100925 ± 100 yRayn

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Kvilleken (pedunculate oak "1701")

Kvilleken, picture by Pellesten, 2011-01-09

The oak tree with the largest girth in Europe.

Kvilleken, picture by Gräsmark

Kvilleken, picture by Maarten Windemuller, 2008-07-19

Kvilleken, picture by benno

Kvilleken, picture by Maarten Windemuller, 2008-07-19

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