What is this? It came with no tag whatsoever. The lighter green arms have grown over the past month since I've had it.

I will once I figure out how to make my pictures small enough to post.

I picked up a package of mixed cactus seeds a few weeks ago just to see if any would grow. Since this is my first try I'm not expecting any to make it to maturity but I would like to know what's going wrong. They're all in a seed tray covered in Saran wrap. The soil has stayed moist but not soggy. I...

I'd love to have an indoor collection of lithops, fenestraria and maybe a hawarthia or two, all in the same pot. Ideally all species would be small enough at maturity that I could fit three to five plants/species into a pot that was maybe 12 inches in diameter. I am interested in plants that would n...

I'm in New England. They are by a couple of windows on a bookshelf. I'm not sure if the windows face south etc but I can see sunny squares on my floor from about 10 am to 4 pm. I also have a grow light that I was planning on putting them under for a couple of hours a day unless that would just confu...

I have five small cacti all from a local greenhouse or home depot. I've got them all within the past month. I've been researching and they are now potted in a mix of coir, pumice and commercial cactus mix. One of them is pretty wrinkled. I haven't watered them. How do I know when I should? They are ...

CI found this at home depot. I can't find and pictures of a similar cactus online - maybe. Does anybody recognize it? Is it actually a euphorbia ( what kind? )?

I have three new cacti. I've heard that soaking them in soapy water is a good thing to do to take care.
of lurking pests. So, do I use dish soap? For how long? Rinse off after I assume? Should they be totally dry before they go in their new pots? Thanks!

I'm pretty new to cacti, and there are a couple of genera that I am particularly interested in collecting. The greenhouses where I live all get their cacti in labeled as 'cactus'. Is there a set of traits that set Rebutias apart from other cacti? Also, how can I tell if a cactus is a juvenile and wi...