It's masculine counterpart is Hyacinth.
Begonia was coined on December 12th, 2021 by u/ThatoneRandomLesbian on Reddit.
The Begonia flag, as well as the 5 stripe version, was created by the coiner on December 12th, 2021. The pink/light pink represents attraction to women. The white represents the attraction being exclusive or not. The orange/light orange represents the attraction to women alinged people such as demi-girls, girl-flux individuals, etc. The yellow represents the attraction to non-binary indivuals.