In article m,
ElektraUK writes
We have looked EVERYWHERE online to try to identify the blue flowers

and the closest are the borage, but not quite. The leaves do not have

a scent of cucumber.

If it's not borage, you could try searching on related plants - try
alkanet, pentaglottis, anchusa.
--
Kay
"Do not insult the crocodile until you have crossed the river"