The passage is part of an address by Jesus to the crowd and his disciples.  He is using the tithing of herbs by the religious leaders  as an example of how they observe the rules about little things (tithing herbs) while ignoring important matters.  No mention is made of rue in the parallel passage, Mathew 23.23.
Luke 11:42

 “Woe to you Pharisees, because you give God a tenth of your mint, rue and all other kinds of garden herbs, but you neglect justice and the love of God. You should have practiced the latter without leaving the former undone.”

Plants like full sun to partial shade and average to lean, moist to dry, well-drained soil in USDA Hardiness Zones 4-9.  They are generally healthy but may suffer from root rot is wet soils or hot climate.  Propagation is by seed and  terminal cuttings in late summer and early fall

The genus name, Ruta, may be related to the Greek word reuo meaning  set free and refers to the healing power of the plant.   The specific epithet, gravolens,  probably is related to the Latin word gravis meaning heavy, and refers to the scent.

By Karen