Dipladenia -- found!

I've decided to never walk past a display of Dipladenia (if that's what these are) without at least checking out the prices. These are a bit hard to grow, let alone find in a garden centre; in fact, I've only ever found them in the little fruit-vegetable-flower markets that thrive on Toronto's Danforth Avenue. One of the things I find appealing is that when the flower buds start to unfurl they're white or nearly so, and then the colours start to brighten up.

It's amazing what you can buy around here. (Some year I'm going to buy a fig tree---when they're on sale they usually come with a few fruit already on them. I understand that figs are finicky and require much coddling through cold weather.)

Anyways, I found these two specimens the other day, $4.99 each. They need repotting, and I'm nearly ready to do that (just have to mix a bit of coir in the potting soil).

AUGUST 4/09 UPDATE: The Dips have been repotted and they seem to be quite happy in their biodegradable ("green") pots from http://www.greenpots.com/ (but mine are black, for some reason...).

They are tender perennials, which means that I will have to bring them in in the fall before the frost starts. The other issue with these lovelies is that there's not much definitive info on over-wintering and then getting them to bloom again. These are Grown in Canada, by the way.