Emma, A question much like yours was asked and answered over at the C&S Forum - the link to that thread is below. You can put the healed-over end in a potting mixture, but you just want to ensure that the soil stays dry until there are roots. OO, Give your Aloes as much light as you can, but gradually so. Most of the 300-odd species grow best in full sun. As it's grown in full sun, you'll find that it will grow faster and be thirstier than one grown in more-shaded conditions. The sunned Aloe will also be more colourful: Here is a link that might be useful: Get On Up With The Aloe

Well first of all, that's not Aloe Vera and second of all, I can't read most of his text. Terrible video production quality. It also looks like he's fudged it a bit and pulled out a pup at the end (with the biggest, outer most leaves ripped off to look like one leaf propagated it) and not a rooted leaf with a baby plant attached. It's a fake video.

I'd suggest differently. Don't cut this off now, simply remove it from water & let it dry overnight. Sprinkle household cinnamon on the root end, shake off the excess & pot it up DRY in equal portions of C&S mix & Perlite. They need to be mixed well pls I think it still has a chance, I don't believe it's done for. Pls accept that rooting succulents takes time. Plants are on plant time, not people time, can't be sped up or fertilized into rooting faster (like another poster on here thinks) You don't sound like a dummy Grace, it's a reasonable question. We were all newbies once. Just next time root succulents directly in soil (mix), not water. For Houseplants, one can use moist Perlite, maybe that's where you got the idea to try Vermiculite. Importantly, when potting up succulents DO NOT WATER THEM IN as they have no roots so therefore no way to take up the water; it'll just cause rot. Pls wait to see new growth before watering, then water only on the soil, never on the plant. Stefan, the lower stem still looks good from here. I don't see rot yet wherein the lower stem would be discolorered &/or mushy.

Wendy, Put me down for two. You did way much better than me. Many years ago I did the same thing but only ended up with about 10 which I gave out thinking I would do some more later. Well later seeds were weeds and ripe offs from China so I purchased some from US which the lady purchased from China and resold weed seeds. They turned out to be grass. Which I complained right away since I knew what the seeds looked like. Only good seed I could get was over $1 each so I gave up. With so many plants I now owned, growing seeds is out of the question. I plan to pay you well for them and they are expensive on Ebay. Howard, Do you remember the two I sent you years ago? Did they make it? All the others I sent out all died for them. Wendy, You are on my top list of people I owe. Just like Howard and Chris. Well, too many to name here on Houzz.