this is what a candelabra cactus looks like when it grows up (see previous photo of what it looks like when it's just a young thing). I had no idea. It's only supposed to grow 8-10 feet tall. I think the wall is 6 feet. It's obviously too big for this space but I don't have the heart to cut it down right yet.
It’s variously called candelabra cactus, hat-rack cactus, or dragon bones, all of which describe it adequately. ... The plant is not a cactus but a euphorbia