Chloris truncata (Windmill Grass)
After I decided to not water a patch until it became unacceptable as a lawn to test the time between waterings, we had 3.5 mm of rain. This was three and a half weeks between waterings and was almost at the stage of considering it to be in need of a watering. As a general rule I would say that 3 weekly intervals would keep a reasonable greenness about the grass. It is looking a bit tatty at the moment as it hasn’t been trimmed since late spring. We have also had many days above 35C and at least ten days above 40C.
I certainly think it is worth persevering with this grass in low rainfall areas, especially in areas where it occurs naturally.