It is Autumn, the cold morning. The grass is covered with white
hoar frost, as the exquisite lace. It looks very nice.
"Hoar frost (also called radiation frost or hoarfrost or
pruina) refers to the white ice crystals, loosely deposited on the ground
or exposed objects, that form on cold clear nights when heat losses into the
open skies cause objects to become colder than the surrounding air."