If you can grow cabbage there I bet you can grow flowering kale. I start mine the same time I start my cabbage and I harvest the cabbage a long time before it's time for the flowering kale to bloom but the Kale gets enormous and when it starts getting cooler the colors get beautiful. I love them and so do the deer! This year is the first time I haven't grown them for years because the deer have been eating them when they're just starting to get really pretty so I thought I'd give it a rest and try again next year.
I don't know if it would work the same there but it might be worth a try just to start a couple to see.