The allotment spirit strikes again

I had wondered what had become of all the little buckets connected with string I had photographed at South Kensington tube some months ago (will put link in later), as after the assorted plants in them flowering (failed to capture that and blip it unfortunately), they vanished.

Of course, they are now hung up on old curtain rails in a different part of the station. Couldn't get close enough in the time to see if anything growing in them. I assume so!
Apologies for poor picture quality, rushed smartphone shot as I was late to work.
Must take little camera out with me more.