Blücher-Eiche Ratekau, Historical oak tree near Landesstraße 309 in Ratekau, Germany.

The Blücher-Eiche in Ratekau is a dead pedunculate oak (Quercus robur) protected as a natural and cultural monument. Two memorial stones stand by the trunk: one erected in 1856 by a Schwartau citizen, another from the 1970s with Blücher's dates (1742–1819) and a relief. A young oak grows beside the dead tree.

On 7 November 1806, after the surrender following the Battle of Lübeck, Prussian Field Marshal Blücher and French Marshal Bernadotte met beneath this oak near the Ratekau parsonage. There the Prussian soldiers marched past the French troops, laid down their weapons and went into captivity.

The oak appears in Ratekau's official coat of arms, connecting the area's natural history with its local identity.

The dead oak stands beside Landesstraße 309 in Ratekau, with a memorial stone from 1856 and a second stone placed in the 1970s; a young oak grows next to the old trunk. The two stones carry the inscription "Blücher 6./7. November 1806" and Blücher's dates 1742–1819 with a relief portrait.

A memorial stone placed by a Schwartau citizen in 1856 at the oak bears the inscription "Blücher 6./7. November 1806". A second stone from the 1970s shows Blücher's dates (1742–1819) and a relief of the field marshal.