"In Israel, crops grow through the rainy winter season. By Sivan, they’re ready for harvesting." (source)

"Rosh Chodesh Sivan is distinguished as the day on which the Jewish people arrived and camped before Mount Sinai." (source)

"In Sivan, however, the Jews went a step beyond physical freedom and became spiritually autonomous, defined only by the Torah, God's word." (source)

"Sivan...evokes flowers and first fruits and short summer nights..." (Glinert)