Posted: 26/06/2013 at 06:22
Oooh, how exciting!
I'd work out a colour combination that you like first. What about blues, deep rosy pinks and whites?
So, you could have a David Austen rose Mayflower http://www.davidaustinroses.com/american/Showrose.asp?Showr=3940, Blue aquilegias , campanulas and veronicas, blue globe thistles for some height and to attract the bees (and will look wonderful in the winter frost) and possibly an obelisk for a clematis etoile rose - that will flower late into the autumn and give some structure too. Dot some echincacea White Swan about for highlights, and some Verbena bonariensis as well, so that you're looking through them from the window out into the garden.
In the autumn plant some deep rose bedding tulips like these http://www.jparkers.co.uk/plant-1006206-yk-1/tulip-don-quichotte/ (these have strong stems and long lasting flowers) and in the early spring dot some forgetmenot plants amongst them all in the gaps.
You'll have the makings of a perennial border that will look a picture through most of the year, and will really only take a hour or so's maintenance each month at the most - less than that most months.