Where does “vzkvět” come from?

vzkvět (Czech) comes from Czech květ, from Proto-Slavic květъ, from Proto-Indo-European ḱwoyt-o-, from Proto-Indo-European ḱweyt- — to shine.

Ancestry of “vzkvět”, step by step

StepLanguageWordMeaning
1Czechkvětflower
2Proto-Slavickvětъbright color, light; color, bloom, flower
3Proto-Indo-Europeanḱwoyt-o-white, light
4Proto-Indo-Europeanḱweyt-to shine
Every word from Proto-Indo-European ḱweyt- →Every word from Proto-Indo-European ḱwoyt-o- →Every word from Proto-Slavic květъ →