Yes, you can grow dwarf apricot trees in an outdoor plant box! These compact fruit trees are ideal for small spaces, patios, or balconies. Here’s how to ensure success:

1. Choose the Right Variety: Opt for dwarf or semi-dwarf apricot tree varieties, such as 'Garden Annie' or 'Stark Sweetheart,' which thrive in containers.

2. Select a Suitable Plant Box: Use a large, sturdy container (at least 18-24 inches deep and wide) with proper drainage holes to prevent root rot.

3. Soil and Sunlight: Plant in well-draining, nutrient-rich soil and place the box in a sunny spot (6-8 hours of sunlight daily).

4. Watering and Fertilizing: Keep the soil consistently moist but not waterlogged. Fertilize with a balanced, slow-release fertilizer during the growing season.

5. Pruning and Winter Care: Regularly prune to maintain shape and encourage fruiting. In colder climates, protect the tree by moving the box indoors or insulating it.

With proper care, your dwarf apricot tree can yield delicious fruit even in limited outdoor spaces!