The Federal Horticultural Show 2011 was held from 15 April to 16 October 2011 in Koblenz, Germany. It was the first Federal Horticultural Show in the state of Rhineland-Palatinate. Venues had been the plateau in front of the Ehrenbreitstein Fortress, the square in front of the Electoral Palace and flower beds in the area around the Deutsches Eck. One of its attractions was the cable car over the Rhine, which was established as an ecologically sound transport connection. It connects the Rhine shores near the Basilica of St. Kastor with the plateau in front of the fortress. Unlike previous garden shows, the staging area in Koblenz was mainly in the centre of the city and directly affected the local population. In addition to the prestige of hosting a Federal Horticultural Show, Koblenz benefited to a much greater extent from the associated urban development.

Koblenz is a German city on the banks of the Rhine and the Moselle, a multinational tributary.