About us


The Interseed Potatoes GmbH stems from the former Saatkartoffel-Handelsgesellschaft-Carolinensiel mbH. Our recognised varieties have made Interseed Potatoes GmbH well-known throughout Europe. The reproduction area expanded as Interseed GmbH and Interseed Holland B.V. became more widely recognised. Today we can cultivate and reproduce potatoes across an 800 hectre area in Germany and the Netherlands for our customers. Simply the total area of our testing gardens, which we plant across Europe with comparable varieties from other breeding farms, covers an area that is larger than 7 football fields. Our efforts to expand the marketing activities into additional countries has been met with international interest so that we are now at home in many countries. At the Carolinensiel site, Interseed Potatoes GmbH only breeds their own varieties in a closed system, i.e. no external plant material is used. The production of meristem buds is therefore only conducted at the main site in Carolinensiel and thereby ensures the sole use of pathogen-free preliminary plant material. As a result of the proximity to the coast (sound location), the low number of greenflies and the mineral-rich clay soil ensure fast-growing seed potatoes that can be optimally stored.

 Presentation Interseed Poatoes GmbH

Company history

  • 2019 new construction  of a foil tunnel at the Carolinensiel site.
  • 2015 New construction of a protrusion in order to properly acclimate the seedlings for their storage at the Semlow site
  • 2015 Expansion of the potato production at the Carolinensiel site
  • 2013 New construction of a storage and sorting facility at the Carolinensiel site
  • 2010 Founding of the Interseed Holland B.V.
  • 2007 Company name changed to Interseed Potatoes GmbH
  • 1996 Beginning of the hybridisation work
  • 1993 New construction of the greenhouse
  • 1990 Expansion and enlargement of the potato storage facility
  • 1980 Founding of the company Saatkartoffel-Handelsgesellschaft-Carolinensiel mbH and construction of a potato storage facility

Approval of varieties

  • 2019 Approval of the French fries varieties Francis, Montis and Poseidon
  • 2018 Approval of the French fries varieties Blazer Russet and Classic Russet
  • 2017 Approval of the French fries varieties Alanis and Chenoa
  • 2016 Approval of crisps variety Austin and the Fast Food variety Abilene Russet
  • 2011 Approval of variety of the chips varieties Miss Malina
  • 2009 Approval of variety for the chips variety Miss Bianka
  • 2006 Listing of the Zorba variety for fast food
  • 2001 Begin of captive breeding for the Zorba variety

Breeding and conservation scheme

New breeding:

  • 1. Year Cross-breed
  • 2. Year Seedling
  • 3. Year Junk Seedling
  • 4. Year A-Strains
  • 5. Year B-Strains
  • 6. Year C-Strains
  • 7. Year D-Strains
  • 8. Year First Year of Value Analysis
  • 9. Year Second Year of Value Analysis
  • 10. Year of Existence: Approval

Captive breeding:

  • 1. Year of meristem plant (PBTC) for tuber extraction PB 1
  • 2. Year of reproduction step PB 1 to PB 2
  • 3. Year of reproduction step PB 2 to PB 3
  • 4. Year of reproduction step PB 3 to Basis S
  • 5. Year of reproduction step Basis S to Basis SE
  • 6. Year of reproduction step Basis SE to Elite
  • 7. Year of reproduction step Elite to A Certified
  • 8. Year of reproduction step A Certified to B Certified

© 2024 Interseed Potatoes GmbH | Groß Charlottengroden 6b, 26409 Wittmund

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