Dunno

I have no idea what kind of plant this is, and G**gle Lens was of no help either. So be my guest with your suggestions (or knowledge).
Thanks to JDO for hosting the Tiny Tuesday challenge this month. I used the macro lens of my mobile, so I reckon that suits the guidelines.

Edit: it is a Viper’s Bugloss (aka blueweed, Latin Echium vulgare) (thanks to GoldishCJ2)