Corn Mazes? Ah, that will have to be a past (Plus I'm a farm girl, I have my own corn fields) I'll steal from Cancer, Virgo or Libra though!
I think they probably smolder for a long time before they catch. I remember my dad would sometimes burn off fields, he actually spent more time getting ready for burning so it wouldn't get out of control. Once he got it started it went fast.I still don't know how a cigarette can start a grass fire.