Mosel · Germany

Rothenpfad

A historically highly rated red-slate sector of Marienburg. The producer associates it with herbal, spicy and darker red-fruit characters.

Grape · soil · climate

What grows here, and why the site matters

What is planted

The vineyard record lists Riesling. These are planted varieties; an individual linked bottle may use one variety or a blend.

Soil structure and vine density

Source-recorded ground: Soft, weathered red clay slate. Geology: Red slate.

Finer clay-rich material generally holds water for longer, although aeration, drainage and the proportion available to roots depend on structure and compaction.

A soil name is not a bulk-density measurement. BottlePicker only shows soil bulk density where a laboratory or modelled value exists. Texture interpretation follows USDA NRCS soil-water guidance.

Growing-temperature requirement

Riesling: Cool-climate example; typically 1,800–2,500 growing degree days on the °F scale, equivalent to about 1,000–1,390 °C-days accumulated above a 10°C base.

Heat bands use Oregon State University Extension. The OIV climate method treats growing-season temperature as accumulated heat above 10°C, not a fixed daily target.

Site conditions

Aspect: Very steep sector above the Pünderich viaduct, without road access.

Producer	Clemens Busch
Appellation / classification	Pündericher Marienburg
Location	Mosel, Germany
Aspect	Very steep sector above the Pünderich viaduct, without road access.
Soils	Soft, weathered red clay slate.
Geology	Red slate.
Grape varieties	Riesling
Planting years / vine age	Oldest Grosses Gewächs vines are at least 80 years old.
Training system	Traditional single-post training in the oldest parcels.
Farming	Biodynamic; no machine use in the roadless steep sector.
Certifications	Respekt-BIODYN
Harvest method	Hand harvest required by terrain; oldest-vine fruit selected for Grosses Gewächs.
Data quality	official-source
Record updated	2026-07-18