According to Wikipedia:

Greenery

According to the Midrash, Mount Sinai suddenly blossomed with flowers in anticipation of the giving of the Torah on its summit. Greenery also figures in the story of the baby Moses being found among the bulrushes in a watertight cradle (Ex. 2:3) when he was three months old (Moses was born on 7 Adar and placed in the Nile River on 6 Sivan, the same day he later brought the Jewish nation to Mount Sinai to receive the Torah)[2].

Blessings, 

Tony