When I was cycling my way around bits of New Zealand five years ago I loved cycling past houses in the country where people left fruit, veg and flowers by their mailboxes for passing traffic to stop and buy. The buying bit usually involved leaving a bit of cash in an 'honesty box'.
Then, when I came back and started cycle touring in England, I realised people did it in the countryside here too!
But it was only when I moved to N4 that I realised people do it in London as well. I pass this house on my way home everyday, and there's flowers or plants for sale on a regular basis. They ask for money through the letterbox rather than an honesty box, but I love that there's a little bit of countryside life lurking in zone two of London. And if only I'd have had £2 on me, I'd have bought some flowers as well. I took a picture instead!