Deployment of stone pine elite clones for pine nut orchards
The regional Central Forest Nursery of the regional government of Castilla y León (Spain) has released grafted plants of 5 elite clones of Pinus pinea, a.k.a. Mediterranean stone pine for its big hardshelled seeds. Their edible kernels, the genuine Mediterranean pine nuts, are nowadays the most expensive nuts of the world due to their scarcity and dependence on collection from the wild.