Foxglove Summer question

Rikey wrote: "I can't think of a single author who's characters have gotten under my skin as much as those in this series. I can't wait to see what Peter makes of the Big Green as opposed the Big Smoke. Thank yo..."

And (judging by the title) a very rural 'big bad' this time - we saw him briefly in Broken Homes. Mr Fox aka Reynardine. Anything from a trickster to a serial killer, depending on what incarnation of the legend Ben chooses to use.

I can hardly wait!

The other books all seem to be based on a certain art form:

Rivers of London = theatre
Moon Over Soho = music
Whispers Underground = art
Broken Homes = architecture

I'm reckoning this will be based on gardening, somehow.