Fantasy books that center around alchemy or botany?

Hi!
I’m looking for fantasy books that has alchemy heavily featured. I’d love something with a mystery or thriller twist but really just anything with alchemy will do. YA preferred but any age range is fine.

I’ve read {botanists guide to parties and poisons} and it has great potential but I hated the implementation.

That’s really the only thing I can think of that has been along the lines of what I’m looking for.