Last autumn our wild foxgloves self-seeded and now in March we've lots of tiny ones in the corner of a bed. Less than 1 centimetre across, will they not grow enough to flower this year? Foxgloves are usually biennial but could these flower next year in their third year?
Otherwise, they'll be crammed into a small space and you'll not get the best from them if it's an ornamental border.
I live in west central Scotland - not where that photo is...