"As the myrtle spreads fragrance in the world, so did she spread good works." Myrtle represents the community, thought of as a symbol of peace and of Eden and of marriage. ... The plant has many, layered meanings-youth, virginity (before marriage), fertility, innocence, immortality, fidelity-but, above all, LOVE".
The references in Isaiah (Isaiah 41:19 & 55:13)
Refer to the divine establishment of the people in the land in subjection to Jehovah. As an evergreen, fragrant shrub associated with watercourses, the myrtle is a fitting symbol of the recovery and establishment of God's promises/(Agapao).
https://flowermeanings.org/myrtle-flower-meaning/
"As the myrtle spreads fragrance in the world, so did she spread good works." Myrtle represents the community, thought of as a symbol of peace and of Eden and of marriage. ... The plant has many, layered meanings-youth, virginity (before marriage), fertility, innocence, immortality, fidelity-but, above all, LOVE".