Do you already know or still know the  Kasseler Strünkchen? Or the "three sisters" bean, pumpkin, corn - the ancient cultivation system  of the Mayas?  On Friday 21.May from 17 o'clock the Hessian broadcasting station interviews by App in "Hello Hessen" the  agrarian engineer Catherina Merx. She presents special old varieties from the teaching and learning garden at the tropical greenhouse. The vegetable gardener gives cultivation tips  and explains where you can get rare seeds.