Giant sequoia on the landgoed Sandwijck, De Bilt

This page contains specific information about giant sequoia (Sequoiadendron giganteum) '172', which can be found on the landgoed Sandwijck in De Bilt.

The girth of the tree is 4.90 m measured at a height of 1.30 m (2006, Margriet Janssen). Its height is exactly 33.40 m (Feb 1, 2011, laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder), Joris Hellevoort).

Growth rate

The girth was measured more than once:

Year	Girth@1.3 m	Measurement	Growth rate
2000	4.64 m	D. C. Hasselman	-
2006	4.90 m	Margriet Janssen	4 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.

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Photos

The photos are provided by Margriet Janssen.

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