Meaning
Tells of lovers lying in the long grass. Perhaps the girl is called Flora. Perhaps the "flora" in the song are the flowers they are surrounded by. Perhaps it is about the Goddess of flowers, Flora.
The song was inspired by the various legends from classical mythology given to flowers. The "tears from Persia" are the Persian iris. They are the tears of the Mourning Iris taken from the legend of Persephone, the daughter of Demeter, the Goddess of the Corn. Persephone was abducted by Hades, and was made to spend six months of each year in the underworld with him (hence winter) and the other six months on earth (hence summer).