Woody

"Woody Agriculture refers to the intensive production of agricultural staple commodities from highly domesticated woody perennial plants. It differs from agroforestry in that no annual crops are grown, and thus little or no tillage is performed. Permanent stands of the woody crop are established and seeds are harvested annually. Once every 5-10 years the wood is harvested for biomass by coppicing, whereupon the plants regenerate from the roots and resume production of the food crop one year later." (thanks Leila)