Ancient Greece and wine help satisfy demand. Wine historians have theorized that the Greeks may have introduced viticulture to Spain and Portugal, but competing theories suggest that the Phoenicians probably reached those areas first. The grape clusters, vines and wine cups that adorn Greek coins from classical times bear witness to the importance of wine to the ancient Greek economy. With every major trading partner, from the Crimea, Egypt, Scythia, Etruria and beyond, the Greeks traded their knowledge of viticulture and winemaking, as well the fruits of their own production. Millions of amphora pieces bearing the unique seals of various city-states and Aegean islands
Ancient Greece and wine of using suckering and plant cuttings for new vineyard plantings. The Greeks also employed vine training with stacked plants for easier cultivation and harvesting, rather than let the grapevines grow untrained in bushes or up trees. While ampelographers have been unable to identify the exact ancestry of any current "Vitis vinifera" grape variety among those grown by the ancient Greeks, several—e.g. Aglianico (also known as "Helleniko"), Grechetto, and Trebbiano (also known as "Greco")—have distinct Greek heritage. Not all Greek viticulture techniques were widely adopted by other wine regions. Some Greek vineyards used mysticism to ward off disease and bad weather.