Posted: 08/01/2014 at 17:04
Mow it all rubber, and remove the mowings. Some things will do well, there are some there that won't but that's always the case. Give it a bit of a rake here and there so you can see soil and sow not too thickly. Don't mow it again til the plant has set seed. After that it looks after itself. You have some plants there that will never grow in grass, I'd leave them to live or die as they see fit. Meadows are a complex entities. Not all the same. You can mow up til hay time them leave it for late flowerers, that won't work where you've sown the YR. Or you can leave it through spring and early summer and mow late summer, that works with spring bulbs, early flowerers and rattle.
It takes a long time to get a balance and see what works with your soil and your plants.