Some surprises on the plant front

Apart from sowing a variety of grasses on the large area of cleared land (for drainage purposes) I waited to see what appeared. The very first thing, like a beacon, was one daffodil which stayed there on its own till it drooped. What surprised me was how just much Male Fern appeared followed, unsurprisingly, by Rosebay Willow and Germander Speedwell, Marsh Bedstraw, Hawkweed,  a few knapweed, some nettles and some yet to be identified, still just leaves in the ground. Then surprise - Mayweed, Ox-eyed Daisies and one red poppy, none of which were here before.

One question – are Ox-eye Daisies a native plant?

There are also a couple of largish areas where nothing has grown, now I am wondering why.