California,
United States 
the side of my cactue is turning grey
23 Dec, 2009
Answers
Is the grey soft and mushy or dry and hard?
Soft mushy - too wet.
Dry hard - too dry.
Can you supply more infomation, like Photo, Common name, Latin name, Size, Natural location, Potting Medium etc.
30 Dec, 2009
Do you mean cactus?
26 Dec, 2009