What is the oldest tree in Bamberg?
The closest thing to a dated tree is the Great Lime of Teuchatz, well outside the city itself, whose girth points to something like 350 to 400 years if a local legend about its planting is right: soldiers buried here during the Thirty Years' War, sometime in the 1630s. None of the other five protected trees here carries any age estimate at all. The registers give only a location and a protected status for those five. If you know how old any of these six actually are, tell us.
Bamberg's Naturdenkmal-Verordnung, passed in November 1995 and amended in 2007, protects trees across the city and its outskirts and dates almost none of them. Each entry carries a number, a name, a location and the fact of protection, nothing about planting dates. The first five trees here were cross-checked against Wikipedia's reproduction of the register and geotagged Commons photographs. Three of the first four stand within a kilometre and a half of each other on the hillside above Wildensorg: two limes by a spring, an oak on the Teufelsgraben, and a lime on a demolished manor's site. The fourth stands alone by the Regnitz in Bug. None of those four carries a girth measurement. The fifth, the Great Lime of Teuchatz, stands sixteen kilometres out on a road with no rail and no confirmed bus, documented instead by a dedicated Wikipedia article citing published dendrology surveys, and it is the only one of the six anyone has ever measured: 770 centimetres round in 1990, 822 in 2008. The sixth, the Kilianseiche in Schesslitz, comes from the district's 2009 ordinance, which records its name and place and not even a species.
One of Bamberg's trees also appears in The Autumn Harvest.