AniCue
Manga chapters rarely follow a fixed schedule, and Himitsu no Hanazono has no officially confirmed next-chapter date. AniCue estimates the likely drop from its recent release history and notifies you the instant a new chapter is detected.
Himitsu no Hanazono has finished releasing.
You can track Himitsu no Hanazono on AniCue and jump to where it's available to read. Follow it to get a free alert (email, browser, or Discord) the moment each new chapter drops.