Cobnut Segorbe A French cultivar of common hazel, Corylus avellana Segorbe is a large, very vigorous, deciduous hazelnut-tree, with a rounded habit. The nuts are round, small to average size with brown shells, are fragrant and have an excellent flavour. The large, slightly serrated leaves are mid-green, turning yellow in autumn. In February and March, yellow male catkins and tiny red female flowers appear, and can be vulnerable to frosts. The nuts can be picked from early September. Fruits better with a pollination partner, such as Gunslebert or Fertile de Coutard. Site: Sheltered, warm, sunny siteSoil: Fertile, well-drained, slightly alkaline soil; does well on heavy clayPosition: Full sun in the afternoonPick: Beginning of SeptemberKeep: Nuts keep until New YearHardiness: Fully hardy, but flowers may need frost protectionPollination: Partially self-fertile, but fruits better with a pollination partnerUses: Eating, roasted, oil, and hazelnut flour Learn more about how to choose and grow hazelnuts and other nuts in our advice section and on our resources page. Photo by Far Closer, cropped, and licensed under CC BY 2.0.