A good curtain rod will be versatile, both in terms of function and aesthetics: Ideally, you’ll change them out less often than your curtains, so you want them to work with a range of styles.
A regular curtain rod is unlikely to be sturdy enough ... they're not the only option for making a plant curtain in your kitchen window. If you don't have a sturdy way to secure heavy hanging ...
Oh, and curtain rods. If you're in the market for a one-piece bay window curtain rod, chances are you'll be ordering one online rather than picking one up locally. But it's fairly easy to DIY ...