Wehlener Sonnenuhr

Wehlener Sonnenuhr is a precipitously steep, slate-soiled Riesling vineyard facing the Mosel village of Wehlen, classified by the VDP as a Grosse Lage—its highest vineyard tier. The classified section spans roughly 110 to 320 metres in elevation, faces south to southwest, and reaches gradients of 65–70%. Its name honors the great sundial set into the slope by Wehlen winegrower Jodocus Prüm in 1842.

This page corrects an earlier classification error: Wehlener Sonnenuhr is not a VDP.Erste Lage. The VDP lists Sonnenuhr, Wehlen as VDP.GROSSE LAGE. This designation belongs to the VDP’s private origin hierarchy. It should not be confused with the separate categories of German wine law, or with the ripeness terms Kabinett, Spätlese, and Auslese.

Wehlener Sonnenuhr at a glance

Where the vineyard sits

The vineyard climbs the right bank of the Mosel opposite Wehlen, wedged between river and wooded ridge. Its sun-facing arc and proximity to the water make the site unmistakable from the village below.

The VDP treats the Grosse Lage as the prime core within the broader registered Wehlener Sonnenuhr Einzellage. Published area figures can differ depending on whether a source means the full Einzellage or the VDP-classified heart of it.

Steepness here is no decorative detail. A 65% gradient means a rise of 65 metres for every 100 metres of horizontal distance. Much of the work must still be done by hand, with many vines trained on individual stakes rather than broad wire trellising.

This traditional layout lets growers work vertically up the slope—but it makes pruning, canopy management, and harvest genuinely demanding labor.

Blue Devonian slate and the Mosel microclimate

The VDP identifies grey-blue Devonian slate as the site’s defining substrate. Weathered fragments form a stony, freely draining surface, while fractures and finer material below offer roots pathways and pockets of retained moisture.

The dark stone absorbs heat by day and releases it after the air cools. The Mosel below moderates temperature further and reflects light back onto the vines.

It’s tempting to reduce this geology to a guaranteed “slate taste,” but vineyard expression is rarely so simple. Soil shapes drainage, heat, and vine vigor; vintage conditions, picking decisions, fermentation, and residual sugar shape the wine just as much. “Mineral” remains a useful tasting descriptor—not proof that dissolved rock has passed into the glass.

Why the sundial matters

S. A. Prüm and the German-language VDP vineyard record date the sundial to 1842, crediting Jodocus Prüm. It gave workers and villagers a practical means to read the time before watches were common—and it later became the vineyard’s visual emblem.

The VDP notes that wines were once identified mainly by village name. Sonnenuhr established itself as a single-vineyard designation in the early twentieth century.

Wine styles from Wehlener Sonnenuhr

Wehlener Sonnenuhr is prized especially for Riesling in Kabinett, Spätlese, and Auslese styles, though dry Trocken wines are also made. Producer and vintage matter as much as the site name itself.

Common tasting notes include white peach, citrus, herbs, floral lift, and a fine slate-like, stony finish. The best wines fuse ripe fruit with pronounced acidity and can age for decades.

Remember: Prädikat does not dictate finished sweetness. Kabinett and Spätlese refer to must weight (Oechsle) at harvest, while trocken and feinherb communicate separate information about residual sugar. Let alcohol level, sweetness wording, and producer notes guide your choice. Our Kabinett versus Spätlese guide and German Riesling sweetness guide explain the distinction in full.

Leading producers to know

The current VDP vineyard directory lists producers including Joh. Jos. Prüm, Dr. Loosen, S. A. Prüm, Willi Schaefer, Schloss Lieser, Reichsgraf von Kesselstatt, Wegeler, and Van Volxem. Markus Molitor, not a VDP member, also documents holdings in Wehlener Sonnenuhr on its own vineyard page.

A worthwhile tasting exercise: compare two producers in the same vintage, then compare one producer’s Kabinett against its Spätlese. The first comparison reveals farming and cellar choices; the second shows how harvest selection and balance shift within the same vineyard.

Visiting and reading the label

The slope is visible from Wehlen and from paths along the river. Treat it as working agricultural land: stay on marked routes, never enter rows without permission, and take extra care on wet slate.

On a label, look for producer, vintage, “Wehlener Sonnenuhr,” any Prädikat, sweetness wording, and alcohol. VDP bottles may present the site as “Sonnenuhr, Wehlen” within the association’s classification.

Serving and cellaring

Serve young, lighter examples cool rather than ice-cold, so their aroma isn’t suppressed—around 9–11°C is a practical starting point. Mature or more concentrated bottles often show better slightly warmer.

For cellaring, stable temperature, darkness, and sound cork condition matter more than any single promised lifespan. Kabinett can evolve gracefully for years; concentrated Auslese may last decades. But producer, vintage, and storage history should always guide the decision.

Primary sources

• VDP Vineyard.Online: Sonnenuhr, Wehlen
• VDP estate profile: S. A. Prüm and the 1842 sundial
• Markus Molitor: Wehlener Sonnenuhr site profile

Frequently asked questions