How Long Can Reapers Go in 7a?

Greetings, all,

I'm in northern VA, Zone 7a. My Reaper plant has some ripened berries, but many more blossoms and nascent blossoms. How long will Reaper plants continue producing in my zone as the weather cools? I think only a fifth of the total present blossoms have ripened into berries. Many have a long way to go.

Thanks!