Wildflower areas are a waiting game and take many years to adapt to the local conditions. Species will come and go but eventually you'll reach an equilibrium where the best plants for your location start to thrive. I wouldn't be to down heartened as a two and a half year meadow is still very young, just make sure you intervene with timely management. I'm four years in with mine and only just starting to see results.
Have you tried Cardamine pratensis? aka milkmaids, Cuckoo flower and others … it used to be common in the unimproved watermeadows of mid Suffolk where I used to live.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
The area you describe, at the foot of a hill in a lush meadow on clay alongside a stream is exactly the place for Cardamine pratensis … it grew in a spot like that by my garden for hundreds of years …
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Posts
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.