I'd start again, If there are no seed leaves they won't be going anywhere. I wonder what happened there.
Have they got seed leaves or just a bit of stalk?
If you can't find it on a google search it probably doesn't exist now. Can't imagine cutting a hedge more than twice a year anyway. Once does ours quite satisfactorily
That little piece looks more escallonia than osmanthus but would be good to see the shape of the plant
Felicia? but that's just a name that sprung into my mind, nothing I grow
It's one of the equisetums, horsetails. Very persistent and deep rooted. Those are the fruiting bodies
It's a biennial so let it seed if you want some for the future
It's a bit early to be looking for a nest, they're still looking for nesting sites
certain aspects of it look like Viper's Bugloss, Echium vulgare. Have you got any more photos?
What are Ladies and Gentleman, is that the same as Lords and Ladies?