I shall be interested in this.
My first thought is 'do you fertilise wildflower meadows?' I thought the idea was to keep fertility down so coarse grasses don't grow, while wildflowers don't need high fertility.
Can you share more about your meadow please? Is it the type where you cleared off the grass and sowed wildflower seeds? Or is it the kind where you cut the grass short then planted out plugs of local native wildflower plants?
I am trying to do the second type but with very little success
(in part I think because we have also planted trees so we can't keep the grass down and neither of us has the strength or energy any more to wield a mower between the trees
)
Do you have any photos of the meadow as it's developed?