Tree or bush?

Tree or bush?

Observation - Tree or bush?. Description: Found these growing between some paving slabs so they're probably more stunted than they usually would be. They don't look like your run of the mill weeds.. are they some type of tree or bush? Nothing nearby that looks similar.

Found these growing between some paving slabs so they're probably more stunted than they usually would be. They don't look like your run of the mill weeds.. are they some type of tree or bush? Nothing nearby that looks similar.