Saguaro Cactus Boot

A saguaro boot is the hard shell of callus tissue, heavily impregnated with lignin, that a saguaro cactus (Carnegiea gigantea) creates to protect the wound created by a bird's nesting house .[1] The bird pecks through the cactus skin, then excavates downward to hollow out a space for its nest.[2] When the saguaro dies, its soft flesh rots, but its woody infrastructure lasts much longer. So does the hollowed-out callus whose roughly boot like shape gives it the name of "saguaro boot Several different kinds of birds create nest holes in saguaro cactus I display mine with a faux succulent in it as shown in first photo (faux succulent not included) This one has some saguaro rib pieces still attached which is cool!