These plants have evolved unique structures—swollen stems, hollow thorns, or even bulbous roots—that act as living homes for entire ant colonies. Imagine the inside of a cactus or tree trunk ...

There have been cases of children using the hollow stems as whistles, leading to death. Dead stems can contain poison for up to three years. While the amount of poison can vary between plants ...

There are more dangerous plants in East Tennessee than just ... The plant can be identified by its hollow, purple-spotted stems and small white flowers. The poison hemlock, when fully matured ...