This large, particle generating flower can be crafted using 4 different purple flowers and big dripleaves. This recipe has several configurations so many different ones ought to work.
Here is one example:
Small Dripleaf
Big Dripleaf
Tuff
Oxidised Copper
Copper blocks and variants can be smelted in a furnace or blast furnace to create their fully oxidised counterpart.
Coral Blocks
Any coral block is able to be made with any 9 corresponding coral pieces.