Growing dwarf pear trees in an outdoor plant box is entirely possible with the right conditions. These compact fruit trees are ideal for small spaces, patios, or urban gardens. Here’s what you need to know:

1. Choose the Right Variety: Opt for dwarf or semi-dwarf pear tree varieties, such as 'Bartlett' or 'D’Anjou,' which thrive in containers.

2. Select a Suitable Plant Box: Ensure the box is at least 18-24 inches deep and wide, with proper drainage holes to prevent root rot.

3. Use Quality Soil: A well-draining potting mix enriched with organic matter supports healthy growth.

4. Sunlight and Watering: Place the plant box in a sunny spot (6-8 hours of sunlight daily) and water consistently, keeping the soil moist but not soggy.

5. Pruning and Fertilizing: Regular pruning maintains shape and encourages fruiting, while a balanced fertilizer boosts growth.

With proper care, dwarf pear trees can flourish in outdoor plant boxes, yielding delicious fruit even in limited spaces.