Stamping and Embossing

Yes Q says it all really I thought I read I could grow Rudbeckia Fulgida and Digitalis Grandiflora in my North facing border which is why I have just grown LOTS from seed but now I can't see anywhere that says it will be happy in a Nth facing spot. What do you think? I am in a new build and the builders planted a few plants along the road none of which should be surviving Nth facing. There are Choisyas that survived the frost! The shrub with the lovely red leaves on, Berberis and lavenders all seemingly doing OK 2 years after planting after a very hard winter last year, so what do you think? I have done some ground cover planting with hardy geraniums Jolly Bee / Buxtons / Dragon heart and I was going to put the Rudbekias in amongst the geraniums for a nice simple perennial display and then add the Digitalis randomly amongst the low growing shrubs the builder planted sow what do you think, is this going to work? I live in the UK - Wiltshire