Großer Riede (Lage) in the municipality of Spielfeld-Grassnitzberg in the Austrian wine-growing region of Southern Styria. It is named after the cadastral parish and comprises 272 hectares of vineyards. Due to its size, there are also different conditions. In addition to a basin and south-eastern slopes, which are among the best areas, there are also north-eastern plots, which were not planted with vines until the 1960s. The preferred parts are sheltered from the wind, but endangered by mould(botrytis). Here, the noise device Klapotetz, typical for Styria, is used to deter the harmful birds.
The large area is divided into the three sub-areas Grassnitzberg, Mittelplatsch and the Hochgrassnitzberg, which is considered the best part. The vineyards, which form a cauldron, are largely oriented to the south, with the right-hand edge sloping to the west. The soils consist of about one metre deep sandy loam (Gamlitzer Schlier) on weathered shell limestone (Spielfelder Kalk or Leithakalk). Here mainly the white wine varieties Chardonnay or Morillon, Traminer, Muskateller, Sauvignon Blanc,Pinot Gris, PinotBlanc and Welschriesling are cultivated. Shares in Subrieden are, for example, the Georgiberg, Hagen Holger, Polz Erich and Walter, Polz-Kiefer, Primus, Skoff Walter and Tement Manfred wineries.