Where is it located geographically? Is there yet scent when you rub the leaves?

With no other information I’d guess at Veronica beccabunga, one of my all time favourite plant names. Aka Brooklime. But that might be A daft suggestion depending on where itsgrowing.

it was growing in a drainage ditch... BC Canada here, die that help?...

V beccabunga would be a candidate there. What you need to do now is find images of the plant I suggested and compare them with the specimen you found.