too much cottage garden self seeding!

I have quite a large border in my garden that I cleared last year and grew and planted lots of cottage garden plants like antirrhinums, larkspur, cornflowers, lupins, foxgloves etc. It looked amazing at the time however I am seeing now that it has self seeded EVERYWHERE and now the whole patch is smothered with a carpet of tiny seedlings and I can't tell what is what and there are also a few weeds coming up amongst it all too. What on earth do i do? It is a huge job to sit and pick through them to leave evenly spaced plants and i don't want to waste them by digging it through to clear it, but I just feel like it is going to be a wild old mess. Please can anyone tell me what to do? Ps the area is about 15m by 4m and I have a bad back so can't bend down very easily!

How gloriously wonderful!! Wait awhile, you should the be able to see what is flowers and what is weeds, though they may be flowers as well, just not ones you want - pull out what you don't want. Let some of the ones in what seems to be strange places do their thing, you often get incredible results of beauty like that - you can always get them out later if you don't like the effect. Maybe ask some local gardeners/friends if they'd like what you don't want?  If they know they day you are doing the thinning, maybe they could take the baby plants and grow them on?

Are you confident that the ground was relatively free of weeds before you started. If not, there's a chance that a high proportion of this new growth could be just a mass of weeds.

Also, are you able to identify the plants from their leaves. If you're not sure, then when the little plants are big enough to have distinct leaves, post a close-up photo on here, and we might be able to tell you what the various plants are.

Clearing and cultivating the area will certainly have distusrbed dormant seeds, so you may have a bit of a job on your hands; however, as suggested above, you'll have to wait and see. But in the immortal words of  Corporal Jones, don't panic!