Utah State University Extension
This fact sheet reports on two high tunnel research trials in North Logan, Utah, with fall-bearing raspberries to determine the effectiveness of high tunnel fall freeze protection. The trials found that high tunnels were effective at prolonging the season in years when freezing temperatures halted unprotected raspberry production but were not so severe as to also stop high tunnel production.
Maughan, Tiffany and Black, Brent, "Late -season Raspberry Production in High Tunnels: Varieties" (2018). All Current Publications. Paper 1868.