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I have no idea.
They shoot up everywhere in my garden and flower from june till octobre, it seems.

Take photos of the plants and leaves flowers closeup


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Here you can see the leaves in the background.
They are very thin.
The plant is about 1 meter high.
I know, who to ask - I can tell you later, what the plant is called, if we haven't found out by then.

A location would be nice, searching now, but no luck.

Latin name: Verbena

Quick as a Flash
Verbena bonariensis (purpletop vervain)
South America natives wildflowers