The five-tier A-frame system accommodates nine cultivation troughs per unit. One trough is centrally positioned at the top, while four lower tiers are symmetrically arranged on both sides, creating dual-sided vertical growing surfaces. The frame is welded from hot-dip galvanized square steel tubes, with crossbar spacing customized to the specifications of the cultivation troughs. It is suitable for high-density vertical production of berry crops such as strawberries and raspberries.