It didn't bother the cactus though at least not for many years. But even a cactus requires attention in the form of light and water once in a while. The blinds were opened, The pot was behind a pile of books. It didn't get water and the sun shone on and on. I forgot it to death. It happens. I just watered it though it is pale and brown. Just in case there is a tiny spark left. You never know.