Yes, you can grow a small cherry tree in an outdoor plant box! Many dwarf cherry tree varieties are well-suited for container gardening, making them a great choice for patios, balconies, or small gardens. To ensure success, choose a compact variety like 'Stella' or 'Compact Stella,' which thrive in confined spaces.

Use a large, sturdy plant box (at least 18-24 inches deep and wide) with proper drainage holes. Fill it with well-draining, nutrient-rich soil, and place the box in a sunny spot where the tree can receive at least 6-8 hours of sunlight daily. Regular watering and occasional fertilizing will keep your cherry tree healthy.

Prune the tree annually to maintain its size and encourage fruit production. With the right care, your outdoor plant box can yield delicious cherries while adding beauty to your space. Happy gardening!