I would suggest in most settlements in Harn, that grasslands around and near a manor would be meadows, harvested for hay once a year, maybe twice. A certain portion of manorial land would be given over to meadow and hence hay production. As for your example of scrubby grassland in a mediterranean climate that is coastal, I would think that this would probably mostly be used as wild pasture for goats and sheep who would be herded by shepherds. Depending on how scubby the landscape is, certain 'crops' could be cultivated, for example even in the extreme conditions of the Karst of the Dalmation Coast, lavender is cultivated, but extraordinary efforts have been made over many years to make this possible.
"The woods are alive with the smell of his coming!" Ilviran chant.