No interactions present.
I'm not sure U urens is usually a weed of open situations - this year a lot of nettles ahve very large "teeth" so may be dioica
Around here Urtica urens is (as stated above) a weed of open situations - I've even seen a whole field full of it. Consequently I am moderately familiar with the plant, and can tell that this isn't it. Putting one's finger on the differences is a bit of a different matter.
However, Urtica dioica has leaves which are cordate at the base, while Urtica urens has leaves which are truncate to cuneate at the base.
Lat/Lng: 52.9541, -1.1078
OS grid ref: SK600400