Very unique concept, I like it a lot!
Art and audio are top notch, they create a very chill atmosphere for the game.
The gameplay is smooth and very engaging. In my opinion it lacks a couple quality of life features though, like it would be very nice if I could view the stats of each flower when I hover over them, and it would help a lot, if the right click would mark the flowers to be killed only after their lifecycle is over. Also I think it would make the game more fun if there were some sort of defeat condition like a pollen quota that you have to reach by a certain time or something like that, currently the game feels aimless to me. These are just my nitpicks though.
Overall it's a very solid submission, with good polish. Congrats!