It looks like one to me but the only reason I ask is that I found it growing out of a crack in the pavement today. The local kids ride over it on their bikes so I decided to give it a home.
When I first saw it musher that crossed my mind too, the fact young children were riding over it nearly all day every day. Having looked at creeping buttercup leaves they have a faint pattern I think these leaves lack.
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Looks like it Fishy
Thanks to you both. I did wonder that too hollie
When they named hardy geraniums hardy they really meant it didn't they 
When I first saw it musher that crossed my mind too, the fact young children were riding over it nearly all day every day. Having looked at creeping buttercup leaves they have a faint pattern I think these leaves lack.
I'm confident that's a geranium
Nut
Here is the geranium again. Anyone know what sort it is?
Sigh - can't get the pics upright
A pretty one