I forgot about this post. Gardengal, they are grown outdoors. The top may be O. robusta but I doubt an O. violacae. I will post some of my o. violacae later as I am unsure about them also. Cactus lord, I have not found a Euphorbia Ferox that looks like mine but I am still looking. It does have little yellow flowers along the spines. Daffodillady, I do believe the bottom left is some form of cows tongue. Thanks everyone for your help.

I believe the first one (2 pix) is Notocactus mammulosus (synonym, Parodia mammullosa, not sure of spelling & not sure which name is being used now). Seems silly to say, Stephanie, but I think the other is a Mammillaria (there are gazillions). Maybe someone else will recognize it & pipe up!!

is ther different varieties of this cactus? I searched for this cactus and it is a positive, thank you very much I have many cacti and will be posting more of ones i'm not sure of their names.

Welcome MP. You've got an Echeveria hybrid, possibly one of Dick Wright's. Here are some websites with pictures that might help: http://www.flickr.com/photos/33610540@N07/sets/ http://www.echeveriasinoz.com/feature.html It is natural for the lower leaves to eventually die and fall off. There is a recent post (http://forums.gardenweb.com/forums/load/cacti/msg0600240429885.html?7) where I have added some pictures showing what you do once the head grows too tall and the plant becomes top heavy. Next, while hard to see, your soil mix looks a bit on the heavy side and this could spell root rot at some point in time and why you're dropping so many leaves. You may want to repot in something containing more grit such as perlite. Then again, if your soil is dry and the leaves soft, might require more water. It all depends on your weather conditions, the air circulation and the plant location. This Echeveria wants lots of sun to maintain its color. The leave you are holding will probably not root and grow another plant because it is yellowing and dying. If you want to do leaf production, you have to have a good healthy leaf. Not all hybrids will grow from leaves. The gray colored Echeveria in the side pouch, under your finger, is E. runyonii 'Topsy Turvy'. Can't make out the others.