Salzburgで最も古い樹木はどれですか。
Salzburg's oldest documented tree is the Stephan-Ludwig-Roth Oak, a pedunculate oak at a woodland edge in Morzg. A source records the Transylvanian Saxon leader and pedagogue Stephan Ludwig Roth resting under it on 15 September 1817, which means it was already a landmark two centuries ago; a local blog puts its age at over 200 years today.
The oak has real urgency behind it: the same source reports a fungal infection and expects the tree to survive only about twenty more years, which makes it worth seeing sooner rather than later. Salzburg's Naturdenkmal register runs to dozens of entries, and the nine here come from five corners of the city rather than one walkable cluster, though three, an oak and two limes on separate Riedenburg streets, sit close enough to walk in one afternoon. The Erentrudishof Oak, the city's longest-protected tree (1933), stands in a working farmyard in Morzg where pigs once fattened on its acorns. A black poplar on the Josef-Mayburger-Kai promenade is one of the last traces of the riparian forest that used to line the Salzach. A plane and a black pine share a housing-estate courtyard near the main station, the only two trees left from a grand hotel's bombed-out park, and a giant sequoia stands beside a coast redwood in the formal Mirabellgarten, the only deliberately planted tree here. None of the nine carries a hard planting date; ages come from designation years, a sighting, a claim about a pair of survivors, or a visitor's tape measure, and each page says so.