I have I have several bird and plant identification tools on my phone, but none are as swift and easy to use as Google's ...

Urban trees and plants do more than just beautify city landscapes. They purify the air, reduce urban heat islands, provide ...

and will be difficult to identify. In the short term, you can use their leaf-shape to label them (see Useful information). A further activity could then be to borrow a tree/plant identity book ...