The raspberry belongs to a group of small-fruit crops called brambles.
Brambles have perennial root systems and biennial canes.
The canes will then die back to ground level during winter. The canes of most cultivated brambles are prickly. Thornless blackberries and thornless boysenberries are two exceptions. The raspberry is an aggregate fruit composed of 75 to 125 drupelets. The drupelets are held together by microscopic, interlacing hairs.