Here is the full list of all 30 Flowers by POWGI (EU) trophies - there are 3 bronze, 23 silver, 3 gold and 1 platinum.
Collect all the trophies
Complete a flower with AT in the middle
Solve 50 puzzles
Complete a flower with FO in the middle
Complete a flower with ON in the middle
Complete a flower with OO in the middle
Complete a flower with RE in the middle
Complete a flower with IV in the middle
Complete a flower with LO in the middle
Complete a flower with IT in the middle
Complete a flower with CU in the middle
Complete a flower with SO in the middle
Complete a flower with EE in the middle
Complete a flower with AF in the middle
Complete a flower with UI in the middle
Use Fix to correct 6 invalid words at the same time
Reset a puzzle back to the beginning
Fill in all the gaps in a puzzle incorrectly
Solve the last puzzle
Complete a flower with EN in the middle
Complete a flower with TA in the middle
Complete a flower with GO in the middle
Spend at least a minute considering the next move
Complete a flower with IC in the middle
Complete a flower with HI in the middle
Use Fix to correct a mistake
Complete a flower with NO in the middle
Solve a puzzle without making a single mistake
Solve a puzzle in under 60 seconds
Solve the first puzzle