|Giant cane (Arundo donax), which can be nearly two and a half meters tall|
This is another organism from the 100 World's Worst Invasives list, where it sits at #10.
|Bamboo (left) and giant reed (right)|
It is an attractive plant, and as such it is often grown as an ornamental and its flowers (which are somewhat purple) are used for decoration. It has been used to make musical instruments, including pipe organs. It is also used to reduce erosion in wet areas. Giant cane has also found use in folk medicine, where it is believe to cure or help ease numerous illnesses.
|Close up of the leaves|
Images are from Wikimedia Commons under creative commons licenses: one, two, three