I live in South Australia. a place where a cold day is 15 C. Every year in summer temperatures of at least 40 C are reached( For those that don't know Celsius 38 C is approximately 100 F), and that's without the heat wave. For this reason every year at about this time (Middle-late spring ((Very)) early summer) a letter is sent out to every resident telling them that they must cut their lawn and that it cannot be over a specific height in this case 4 inches. This was written in one minute more of a quick scribble that I'm not particularly proud of but here it is anyway.
Schedule 12 " Section 105F Notice
As owner of the property
Comply and read these words
For flame of fire can spread
Over grass and undergrowth
So cut it down to four inches
Within fourteen days of this notice
Or flame and fire will spread
Over town and country house
This notice sent to you
From the gilbert Valleys council
Obligations of fire and emergency
Schedule twelve
Section one zero five F