Not having read the book, I need a clue!
Not one of Orwell’s better books. It’s a novel about the class struggle in Britain —
Basic summary:
Is it better to reject middle class values and live in principled poverty?
or
Is it better to live a life of relative comfort even if you have to tolerate some bourgeois social standards that may seem oppressive?
In the end, the main character decides to be middle class and have a respectable family. The Aspidistra is a house plant which is considered a symbol of the middle class. As a sort of flag of respectability, the title is a slightly ironic way of seeing: “Make the middle class great again!”