The reason why this article is called Hyacinthus is to take the meaning of two hyacinths - "sad love" and "eternal memory".
White hyacinth - the love that dare not be revealed, whether it is love for Lily or protection for Harry, this is undoubtedly the portrayal of Professor Snape's life.
Many people say that hyacinth represents rebirth.
So,
First of all, please let me send you a blue hyacinth - thank you for your protection
Secondly, please allow me to quietly cultivate a room of pink hyacinths - that is my admiration for you
Once again, please let me walk through the thorns to hand you this handful of purple hyacinths - my love will definitely make you happy
Finally, let me keep this pale yellow hyacinth. I am happy enough to have you.