Is this Ash or something else?
This tree has been growing out of a crack in the patio, right under a fence, for a few years. I originally thought it was a big weed but I was curious as to what it was up to and since it was behind the house with nowhere to spread I left it to it. It's now woody and more like a tree.
I've been wanting to get in to bonsai for ages and this year I've been looking at air layering some of my plants as a starter. Out of curiosity I plugged this in to a plant identification app and it reckons it's Ash or Walnut. Ash seems more likely but it's next to the bins so I'd be inclined to guess it's come from there i.e from an edible seed or nut.