Dudes! Seriously, search the forum before you ask such questions and save yourselves from that monumental game-grinding, time-sucking, cock-blocking headache of trying to figure out how to properly customize your waifu servants, please^^.
Asked & answered ages ago: https://itch.io/t/4093180/alchemypotions. And iffen you're lacking the petals, just edit your save files^^.
@LordBruh: On a new update, don't get your hopes up...itz been almost a half year since 0.17 alpha dropped without much news.