Good morning, check out this weird tree I found near my gym this morning. It must be a graft, right? https://octodon.social/media/wa_YHYj7lOlrWB8S6FE https://octodon.social/media/uaY86cAopu16NcNPKSo
@fobo Or at a boundary between areas of soil with Ph differences.
@fobo That could be it. Construction not only disturbs the "native" soil but can involve bringing in fill from elsewhere. You could always get a couple of soil Ph testing kits from the garden store and know for sure. :) I imagine if the vegetation were the right types and dense enough, you'd be able to see the line where the boundary is sharpest.