Here is the full list of all 21 Flowers Are Dead trophies - there are 21 bronze.
HALCYON 4441
Explore The Drawing Room
Play A Record
Discover Ariel & Evelyn’s Time Travel Plan
Heed Ariel’s Warning
Oh, HoneyMooner
Read Fathers’ Letters
Explore The Regency Room
Read An Extract From The People Of The Rain
Look At The Grounds Portrait
Investigate A Cenotaph
Complete Flowers Are Dead
Enter Fathers’ Office
Play The Hidden Cassette Player
Read The Moonflower Tabloid
Read The Cheat Sheet
Look At All 11 Polaroids
Discover The Blood
Enter The Château
Interact With Celeste’s Computer
Enter Camp Fireflies