This page contains specific information about pedunculate oak (Quercus robur)
'3325', which can be found in the park of the Hof te Dieren
in Dieren (municipality of Rheden)
Girth growth rate
The girth was measured more than once:
|Year||Girth@1.3 m||Measurement||Girth growth rate|
|2009||3.22 m||Jeroen Philippona||-|
|2011||3.28 m||L. Goudzwaard & J. Philippona||3 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.
The height was measured more than once:
|2009-10-14||41.20 m ||Jeroen Philippona||Laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder)|
|2011-11-07||41.80 m||L. Goudzwaard & J. Philippona||Laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder)|
Each measurement can be done with varying accuracy.This tree was planted around the year 1820 ± 10, which makes it around 195 ± 10 years old (Jeroen Philippona
, Oct 1, 2011).
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The photos are provided by Jeroen Philippona
At this photo the silhouet of the tallest oak as well as one of the 10 tallest beeches of the Netherlands can be seen. The oak (41.8 m tall) just right of the house with the pointed crown, the beech (42.4 m) is the tallest tree at the right side of the photo.