Yeah, it got very thick and girthy (kinda like a thick but short cucumber), and about 4 times it's size in about 3 months or so.

Dam, didn't know Cacti were this hard to ID when young. Shows how much I know about them haha

Perhaps I'll try again when its grown more.

A lot of columnar type cactus look alike when young. So if I gave you an id it most likely would be wrong:). Could be a Cleistocactus or a Trichocereus and so on:).

So I got a photo of the adult of this Cactus.

Any Ideas now?

Looks like a baby Trichocereus grandifores to me:). Could be a hybrid and be a smaller version of the grandiflores. I've seen smaller versions. Usually I just see them labeled Trichocereus hybrid:).The flowers could almost any color of the rainbow. Usually reds, yellows, white, oranges, and pinks. There are some hybrids that produce the most amazing flowers. It's a nice surprise:).

Thank you Kara!

I might have been wrong to say it was an adult, I think they said that was 3 months worth of growth or so. So I think you may be right, it can reach the size shown in your pictures given a year or so.

I'm gonna guess it will get bigger, but it could stay smaller. I've seen ones that aren't huge:). It's crazy how I could not tell what your cactus was in the first pic. But just with a little growth I could tell what it was. Sometimes it doesn't take years and years. Sometimes it just takes a little more growth to see the growth pattern to figure out the id. Then sometimes it does take years and years of growth plus needing a bloom to get an id.

Yeah I definitely understand Kara. I already see that pattern in some succulents haha

Thank you for the ID again.

Yan-did you read my comment on your mysterious Echeveria below? I think it may be E. diffractens:). I just bought one and it looks a lot like yours:).

Your Echeveria:)

Wow thanks Kara! Didn't expect that here at all. Yes I just googled it, I see quite a few that are similar to what I have. It grows flush against the soil and has a rosette that's very flat and spreads outwards.

You may have just ID-ed it! Finally it has a name in my notebook!

And thank you for keeping eye out for me, I really do appreciate it very much. Happy growing your Red E.Diffractens!

When I first bought mine I didn't make the connection between mine and yours. When I googled pics I saw some that really do look like yours:).