Update on my acanthus: It's got a bloom stock, about 6" so far!
Now the quandary is if it will bloom before frost hits here.
Typically we get frost late September or early October; a light frost anyway but there was a threat for last night as temps fell to around 3 C. Dodged that, but hope I get a bloom before I have to haul it indoors! Wish me luck! I'll post a pic of it blooming if I can.