Just got a question from Sophie re: growing pink pampas grass in Calgary. I agree Sophie, it is a spectacular plant - when I have seen it elsewhere. I have never tried growing it myself and haven't seen it much in Calgary (OK not at all, but I'm sure some keener somewhere is growing it!)
One problem with pampas grass in Calgary is that it is borderline hardy here - rated as zone 5 so if you had a sheltered spot and/or gave it some protection over the winter, it might make it. But there's still another problem and that is that it needs a long growing season for the spectacular flowers to develop - which I'm sure is the reason you'd want to grow it. Calgary does not have a long growing season by most standards!!
If you do want to try it, I'd maybe put it in a pot and overwinter it in a cold, dark spot in the basement or in a heated garage, if you've got one. Then you can put it in a sunny window in early spring to give it a head start. But on the other hand, it never hurts to try it outside and see what happens! With "climate change" you never know... Let me know how it goes...
Bluestem nursery has tonnes of great information on hardy ornamental grasses. You can find information on pink pampas grass here (but their pictures don't do it justice). A great substitute would be Calamagrostis 'Karl Foerster' which does very well in Calgary (reaches an impressive size but unfortunately isn't pink!).
Thanks for your question! I love to hear from people who've found my blog helpful.