Soils

Dig a hole in Russian River Valley, and you won't hit rock — you'll land in fine, pale sand. This is Goldridge soil, a sandy loam born of two very ancient events: volcanic ash that fell over the land millions of years ago during an eruption, and sandstone that formed from ancient seabed as the Pacific and North American plates collided. Time has weathered both into a loose, well-draining layer. For the vine, that's a gift.

Water drains away quickly here, and that's exactly what Pinot Noir wants. A vine that never stands in wet soil focuses its energy on small, thick-skinned berries rather than lush growth — and it's in the skin where color, tannin, and much of the aroma reside. That's why wines from Goldridge soil often taste brighter and more fragrant than comparable wines grown on heavier loam. Roots still work their way deep down, though, since summer rain is absent for months at a time.

An hour's drive northeast, in Alexander Valley, the soil looks completely different. There, the Russian River has shifted course again and again over millennia, depositing thick layers of river gravel beneath the topsoil. This structure bears a striking resemblance to the gravel soils of Bordeaux. On the warm terraces above the river, with southwest exposure and plenty of sun, Cabernet Sauvignon ripens into dense, powerful wines. One river's history, two entirely different wines.

One misconception persists, even here: some drinkers claim they can taste the sandstone or the gravel directly in the wine, believing the roots absorb minerals and pass them along. That's not true. What enters through the root are dissolved ions in quantities no palate on earth could ever perceive individually. The soil works indirectly — through water, through warmth, and through how deep it forces the roots to go.