Giant knotweed, a terrestrial herbaceous plant in the Polygonaceae family ... grows to be 12 feet tall with hollow stems resembling bamboo has broad heart-shaped to spade-shaped leaves that are larger ...

Delphiniums are vibrant herbaceous perennials famed for producing ... Delphiniums have hollow stems and can be rather ...

Japanese knotweed, a terrestrial herbaceous plant that is in the Polygonaceae family ... typically grows to be 10 feet tall with stems that are hollow like bamboo spade-shaped leaves with pointed tips ...