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Using columnar trees like North Pole or Golden Sentinel, which grow straight up, maximizes limited space. With just 8-10 feet height and a width of two feet, you can fit multiple trees on a balcony, harvesting 15-25 apples per season. Their ability to store fruit and easy pest inspection makes them an economical, space-efficient choice.
8. Strawberries – Small Plant, Massive Yield
Though technically a ground cover, strawberries in containers are unmatched for productivity. Everbearing varieties can produce almost daily, with six to eight plants providing fresh berries from spring through fall. The flavor surpasses store-bought options by miles, and their easy propagating runners create a self-sustaining system. Vertical stacking enhances space efficiency.