Blackberry management at Michigan State University: temperatures over the next few days are expected to reach the 40s and 50s with lows in the 30s. We are protecting some tender blackberries (Columbia Star, Obsidian) by covering them with row cover during the winter. The plants will need to have the row cover removed during this warm spell to prevent them from breaking bud too early. We will cover them again when nighttime temperatures drop back in the 20s.
K. Hanson: Tunnel Berries Outreach Coordinator