I don't have an antenna farm, but I do have a rather nice garden.
It's 120' x 220' and is composed of excellent conductivity "soil" material - corrugated steel.
This is the roof of a two-story office building in the Inner Harbor section of downtown Baltimore.
I have a Butternut HF-6V, a 6m Ringo, a Comet dual band and a few other items of occasional use, all pretty much in the middle of the roof.
Lon - N3ZKP