I have 2 in the garden and with their fairly impressive inflorescence with reddish flowers, late winter, they present some color too.
If you are lucky you can see them in nature in full flower. They grow in Eastern and Western Cape regions of South Africa.
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Above picture was taken just outside Addo (town), on the way to the Addo Elephant National Park, where they are used as borders for the roads inside the camps.
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It is a stunning aloe and drought tolerant. Last time I watered my garden was in 2012! Take a look at them, if you live in moderate climates or can protect them a little in winter in snowy areas.
Reference:
Aloes : The definitive guide. Carter, S; Lavranos, J.J.; Newton, L.E.; Walker, C.C. Kew publishing, 2011