Key varieties in breeding house:
Belgian varieties:
- Herbots brothers
- Jozef and Filip Vervisch
- Albert Bils
- Ivan Stockmans
- Ivan Vanveugelen
Dutch varieties
- Jac Steketee
- Jacques Van der Wegen
- Herman Brinkman
- Jean Hausoul
German varieties
- W. Bölting
- Kipp and son
- Heller - Herbots