I have a lot of foxgloves in my garden and I just let them sow themselves, If they are in the wrong place just transplant them to where you want them. I also have lots of small seedlings coming up, obviously germinated late. I will leave them until spring, I usually have enough to give away. Sometimes you get the odd one that is a different colour from the usual pinky purple. Just let nature take it course and you won't be disappointed.