🪨 Soil

Soil is the top layer of the ground where vine roots, water and many small creatures live. Soil is very important for grapes. It gives the plant water, nutrients and support. The composition of the soil decides how fast water drains, how the ground warms and how much food the roots receive.

Viticulture distinguishes many kinds of soil: limestone, marl, slate, granite, clay, loess, sand, gravel, alluvium, volcanic rock and flint. Each gives wine its own character. Limestone, for example, is often linked to freshness and acidity, gravel drains water well, and clay holds it long. Life in the soil matters too: earthworms make it loose and fertile.

Soil is part of terroir together with climate and landscape, and is closely tied to drainage. Many famous wines owe their fame to soil. But good wine is not made by the ground alone: grape variety, weather and the grower's hands are needed too. Wine minerality is often linked to soil, although no direct link has been shown.