There is one pedunculate oak (Quercus robur)
along the street in Januszkowice (powiat of Dębica)
This tree is called "Chrześcijanin"
. After Napoleon has been burned, this is the thickest oak in Poland.
Girth growth rate
The girth was measured more than once:
|Year||Girth@1 m||Girth@1.3 m||Girth@1.5 m||Measurement||Girth growth rate|
|2007||10.50 m||?||?||Piotr Gach||-|
|2011||?||10.20 m||?||Piotr Gach||0.5 cm/year|
|2013||11.03 m||10.23 m||9.85 m||Stoj||2 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 exactly 20.60 m (Oct 3, 2011, laser with Sine method (e.g. Nikon Forestry 550 laser rangefinder)
, Piotr Gach
The age of the tree was estimated by these persons:
|Year||Planting or germination year||Age||Measurement|
|Oct 1, 2011||1400 ± 10||614 ± 10 y||Piotr Gach|
|Dec 24, 2013||1390 ± 10||624 ± 10 y||Stoj|
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Chrześcijanin (pedunculate oak "4798")
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