I saw these yesterday in residential North Burnaby. There was a fair-sized plot of them, which makes me think they're not being grown as an ornamental. They're 4-5' tall. What are they?
I have no idea if it's celtuce, but that vegetable, which I have never heard of, seems amazing. It was brought to the US in 1938 by Burpee. Never mind what this is - go look for celtuce! Chinese Lettuce, aka Celtuce, Recipes and Tips | Epicurious