The phrase "perennial topic" is correct and can be used in written English.
You can use it to refer to a topic that is frequently discussed or debated over a long period of time. For example, "In modern politics, the best way to create jobs is a perennial topic of discussion."
(Ages 3 to 7) Gardens are a perennial topic in children's literature, and with good reason.
The crass commercialization of the Games is a perennial topic of grousing.
Weather is a perennial topic of conversation in New England (and everywhere else?).
More than enough info for now, no? Stay tuned — this is a perennial topic.
There's so much to take in — including the perennial topic of celebrities as activists — but Ms. Rostock doesn't linger long.
The graying of audiences for what might be called higher culture (let's be objective and call it more expensive culture) has become a perennial topic of concern.
In the process she discusses the perennial topics of realism against idealism, national interest against humanitarian interventionism.
The 63 workshops will also include perennial topics like "Understanding Your Cooperative's Audited Financial Statement" and "Working Effectively With Your Building Employees".
He has his perennial topics in mind: love, partying and sex (monogamous now that he has declared himself a Jehovah's Witness), with some salvation on the side.
He also does little to shed new light on such perennial topics as the contradictions in the American soul, torn between materialism and idealism, hedonism and puritanism, individuality and conformity.
Also likely to be reviewed at the meeting will be such perennial topics as illegal immigration, environmental problems along the border and the five-year-old embargo on Mexican tuna that stems from disagreements over international fishing boundaries.
