You can cut off the smaller roots with no problem. Just make sure where you cut stays above the soil line to heal. Then go ahead and raise it however you want. Do keep in mind that the caudex grows biggest underground then slow down quite a bit when raised. So make sure the caudex is large enough fo...

Congrats! As you can see by my avatar, I'm quite fond of the species!

Where do you live? That can help us figure out if it can live outdoors in your area. I'd probably cut it an inch or two above the soil level. You see how the leaves at the base are fairly crowded together but once the stem starts growing they are fairly spaced out? You want to get rid of that spaced...

That is one of the most etiolated (stretched due to lack of light) plants I've ever seen! I'd recommend cutting the stem back to the base just above where there are all the leaves stacked together. It definitely needs to be in the window at least. More ideally you should grow it outside in a place p...

Probably Euphorbia tirucalli

Maybe just until next winter or spring. So not right away but not that long either.

Something makes me think it could be a hybrid. I could be wrong about that of course, but there is just something making me think that which I can't put my finger on.

H. macrocarpa comes in two main flower colors. Red and pale yellow with brown spots. H. keniensis flowers are always dark red (usually a darker red than H. macrocarpa) and come in shapes ranging from wide open to bell shaped, to ball shaped with an opening. The H. keniensis flowers are bigger than t...

I agree with Ian and Steve about not getting too complicated. You should ask yourself "what does this ingredient add to a mix and why am I using it?". If you don't have a good answer then don't add it (or do some research). My standard mix is 70-80% pumice and the rest a Coir based potting...

While it is an Asclepiad, it would be better to call it a Stapeliad as it is more specific which will allow you find more information. Like Eduart says though, you'll need flowers to even get it to genus. Did you put it in that orchid type mix because you thought it was an epiphyllum? It probably sh...

I haven't heard anything about it, but do you really need a grafted one? You are probably one of the few people on this board that lives in a climate where Pediocactus wouldn't be a pain in the behind to grow on its own roots. I'd even think it would grow in the ground where you are assuming you did...

That may well work. As long as you tried to keep things sterile and worked quickly once you made the cuts you have a great chance of it taking. If the first attempt fails I'd break off a bunch of offsets and do several grafts to increase the odds at least on survives. They grow fast once the graft t...

The gnat problem is easy to deal with. Let the soil dry out between waterings. They require moist soil to thrive, so the only places I ever see them in my collection are in my seedlings or my non-succulents which require constant moisture. They don't live long so if you keep things on the dry side t...

Does it have a drainage hole? If not you'll eventually kill the plant. Also, are you growing it in sand? David, I assume you are talking about those round balls. It kind of looks like Akadama (but may not be), which would be good in a soil mix, though those look too big to be any good. I think he's ...

It's not going to be easy, but at least this is the best time of year to try. I wouldn't buy again from a seller that did something like that. I have (legally) imported some rare Euphorbias and what the seller did was cut off the bottom part of the rootstock leaving me with the desired plant plus 3 ...

There are a few other medicinal Aloes like A. ferox and A. perryi, but you should only use A. vera unless you are very familiar with other Aloes. The reason is that some species are actually poisonous.