longk, I have seen A marlothii in the wild on numerous occassions. They grow in the thousands, and in winter, it is a fantastic sight. Unfortunately I only got interested in photography fairly recently, and don't have any photos of this.
My A Striatula is struggling, didn't like the -2c a few weeks ago so I am covering it tomorrow with a fleece bag. The Aloe juvenna is reallly suffering with a lot of the leaves going soft and brown, may save a few pups but is it isn't hardy here there doesn't seem any point growing it. In January it was bright green and healthy. I had a 'ball' Aloe (?) forgotten the species, up untill last winter, that keeled over as well.
They looks fine to me, a little damage on the A. juvenna, but the Aloe striatula actually looks in pretty good shape. Succulents will often go soft.. because they often drain liquid out of their leaves, in order to protect against freezes. They'll plump up again when if it gets warmer!
mine went under -8c and still alive . this is last week my main surprice comes from the aloe aristata hardy to -5c have lost the center core , but it actually regrowing the center and produced lots of offsets .
strongylodon, Hard to be 100% certain with the leaf damage, but your 2nd plant looks like Aloe brevifolia. I have seen an interesting brevifolia, polyphylla cross that a friend of mine had for a time. But it wasn't 100% cold & wet hardy and he lost it eventually.
I think you are right with Brevifolia Sirius. It will be interesting to see how they have fared in a month or so.
