Spraying them down with water keeps the dew on the leaves from freezing and killing the leaf.
Water from the hose is much warmer than the air temp.
It will only work in a narrow temperature range..if it’s colder than about 28 it won’t work.
Night time temps since that time have been in the 50’s and 60’s..2 inches of rain last night.
Rain??? Does this start a new cycle of growing?