What does "His idea fell fertile to the ground" mean?

Its means that is idea came back to his mind

Explanation:

Fertile means to reproduce

Therefore its means that is idea came back to his mind

i don't really know the circumstances. i personally think not due to it not being fair for all parties and how hated i'd become if i thought it was a good thing.

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.