Spearmint, Maybe

I was out in the garden the other day dead heading the dahlias, and I spotted this.

That's not a dahlia I thought, I'm clever like that, but I hadn't a clue what it was.

I was wandering around the interwebby thingy later and came across an app called PlantSnap, which claims to identify plants from a photo, so I downloaded it and tried it. Spearmint it said.

Checking on Google this morning, I'm not so sure, but I've dug it up and potted it anyway, just to see what happens.

Knowing my luck, it'll probably die on me now.