It goes into blends in the Douro, Dão and the northern and central parts of the Beira Interior, over by the Spanish border, and is mostly found in old, mixed vineyards. It is a difficult grape, prone to mildew and oidium attacks, and a late ripener, sometimes failing to ripen fully before the rains set in late October. However, yields are good, and when it does manage to ripen fully, it makes full-bodied, fruity, aromatic wines than can age well in bottle.