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The PIWI-CH association

Executive Board

  • Roland Lenz, President
  • Bea Steinemann, Vice President, Board Member PIWI International
  • Daniel Furrer, finance and secretariat
  • Bruno and Philippe Bosshart, PIWI Weinzeit
  • Ruedi Meyer, communication, website, media
  • Nora Breitschmid, Events
  • Daniel Rediger, actuary and minutes

Become a Member

In our brochure you will find information about our association and a registration form.

Brochure (PDF 4 MB)

Or register interest at info@piwi-ch.ch
We will then contact you!

News 2022



Grape varieties


members and winemakers

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Biodiversity hike and 1st general meeting PIWI CH

President Roland Renz
The PIWIs are coming ...

On Tuesday, June 30, 2020, almost 60 people met at the Roland organic wine estate and Karin Lenz on the Iselisberg in Uesslingen. The PIWI CH association, founded in December 19, invited to the first general meeting.

In beautiful summer weather, those present set off on a hike through the vineyards of Uesslingen in the lower Thur Valley (TG). Various stops were made on the way. The enthusiastic organic and PIWI winemaker Roland Lenz (two-time organic winemaker in Switzerland) drew attention to the different vineyards and types of viticulture. In an organic farm, a lot of flowers and herbs, sometimes shrubs, grow between the rows to offer beneficial species a home. FIBL's Bea Steinemann reports on the latest attempts to optimize the seed mix between the rows of vines. The hikers also become aware of the differences between European vines and the newly cultivated PIWI varieties (PIWI stands for fungus-resistant and means “robust in cultivation”, ie little to no spraying against pests and diseases has to be carried out). Of particular interest were the references to missing rows of vines in favor of shrubs, the distance to the next trees or the additional insect hotels, all to promote biodiversity.

Back at the Lenz winery, the hikers were happy about the water break before the actual general meeting began. The PIWI CH association was founded last December as a regional section of the PIWI International umbrella organization. The association's goal is to promote PIWI grape varieties in breeding, cultivation, marketing and enjoyment. The association's activities such as participation in the Agrovina or a planned wine and dine in the well-known Hiltl restaurant in Zurich serve exclusively with PIWI wines with certain new taste experiences. The association also publishes the "PIWI WEIN ZEIT" brochure. The readers are connoisseurs and interested individuals, restaurateurs, traders, winegrowers, breeders and journalists. The first edition of March this year was one of the highlights in President Roland Lenz's activity report for the first half of the year. The meeting was characterized by many votes from the members who participate with commitment in the association.

After the official part, the attendees were able to taste and discuss over 40 different pure PIWI wines. These include various new varieties that only have breeding names, such as VB CAL 1-28 or VB CAL 32-7.

Media contact:

President Roland Lenz
Organic winery Roland and Karin Lenz, Iselisberg, Uesslingen

info@weingut-lenz.ch / +41 52 746 13 86

Daniel Schwarz

Homepage: https://piwi-international.de/piwi-regional/schweiz/

Board PIWI CH at the general meeting

July 6, 2020|

General Meeting June 30, 2020 - Program

The first general meeting of PIWI CH will take place on June 30, 2020 at the organic wine estate Roland and Karin Lenz in Uesslingen (TG).

Are planned:

13.30: Biodiversity and new varieties (public event)

4:00 pm: Start of the general assembly

Finally: snack and wine tasting on the subject of new varieties

The agenda of the meeting is:

  1. Greeting
  2. Choice of 1 vote counter
  3. Activity report of the President
  4. Annual program and activities
  5. Budget 2020: Membership fee budget 2020
  6. Elections: Board of Directors, Auditors, President
  7. Miscellaneous and discussion

Registration requested at:

Organic winery Roland and Karin Lenz
0041 52 746 13 86

June 12, 2020|

First edition of PIWI Wein Zeit

Our first newspaper is ready!

Have fun while reading!

PIWI Wine Time March 2020 (PDF, 3 MB)
PIWI wine time March 2020
March 20, 2020|

PIWIs in Swiss viticulture

Mushroom-resistant grape varieties (piwis) are particularly suitable for sustainable viniculture from both an ecological and an economic point of view. Compared to European vines, crop protection treatments can be saved and environmental pollution reduced. The industry's interest in Piwi wines, especially in the organic sector, is increasing - even if the traditional wine sector is changing only slowly.

Lena Holzwarth, University of Agricultural. Forest and Food Sciences (HAFL), Zollikofen, and Andreas Häseli, Research Institute for Organic Agriculture (FiBL) Frick

Read the article (PDF, 0.8 MB)

Article published in the Swiss magazine for fruit and wine growing 4/2018

Reasons PIWI cultivation Switzerland
March 20, 2018|
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