There is one sweet chestnut (Castanea sativa) in the area Kastanjedal in Beek (municipality of Ubbergen).
This tree is called "Kabouterboom". The girth of the tree is 8.35 m measured at a height of 1.30 m (May 28, 2012, Leo Goudzwaard). Its height is exactly 25.00 m (2009, laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder), Jeroen Philippona). This tree was planted around the year 1650 ± 50, which makes it around 363 ± 50 years old (Jeroen Philippona, Nov 19, 2011).
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.
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This tree is called "Kabouterboom". The girth of the tree is 8.35 m measured at a height of 1.30 m (May 28, 2012, Leo Goudzwaard). Its height is exactly 25.00 m (2009, laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder), Jeroen Philippona). This tree was planted around the year 1650 ± 50, which makes it around 363 ± 50 years old (Jeroen Philippona, Nov 19, 2011).
Growth rate
The girth was measured more than once:| Year | Girth@1.3 m | Measurement | Growth rate |
| 2010 | 8.33 m | Nardo Kaandorp | - |
| 2011 | 8.33 m | Nardo Kaandorp | 0.0 cm/year |
| 2012 | 8.35 m | Leo Goudzwaard | 2 cm/year |
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Kabouterboom (sweet chestnut "1690")
