We just finished the last harvest of potted raspberries in a high tunnel in Benton Harbor, Michigan. Plants were pruned last winter to two floricanes per plant. The relatively hot summer shortened the floricane harvest and reduced yields, whereas the long warm fall enhanced the primocane crop. Prelude had good yields this year, but produced small berries. For overall yield and fruit quality over the last two years, outstanding cultivars have been Kweli and Imara.
K. Hanson: Tunnel Berries Outreach Coordinator