non-edible       
adjective (also nonedible) uk/ˌnɒnˈed.ə.bəl/ us/ˌnɑːnˈed.ə.bəl/
 不可食用的
not intended for eating or not safe to eat
  Make sure that you remove the non-edible decorations from the cake before serving it.
 All of the plants in the garden are non-edible. 花园里的所有植物都是不能食用的。 
 Compare: inedible
 - More examples
 - Farmers are coming under growing pressure to reduce the acreage of non-edible crops such as cotton.
 - You need to be able to distinguish which mushrooms are nonedible and which are safe to eat.
 - Non-edible groceries such as shampoo, make-up, and laundry detergent have risen in value over the last year.