When people die, they rot in the coffin or the soil and, well they just die and rot.
rot -> Die Farbe Rot (the color red)
They rot.
No, it turns to stone.
Rot ist die Liebe - 1957 is rated/received certificates of: West Germany:12
Eventuall you will rot away entirely.
They rot and must die
overwatering will cause the roots to rot
no it will die from fin rot
nothing they rot
It would probably suffer from root rot and die. The cacti are not water plants.
I think the word 'wither' is what you seek.