Patti O Box Holly (Ilex crenata 'Patti O') is a dwarf cultivar of Japanese holly. Here's some information about it:

1. Appearance: Patti O Box Holly is a compact, upright, evergreen shrub. It typically reaches a height of about 3 to 4 feet, with a width of only 1 to 2 feet. The leaves are small, glossy, and dark green, similar in appearance to boxwood leaves.

2. Sunlight: Patti O Box Holly thrives in partial to full sun. It can tolerate some shade but will produce denser growth in sunnier locations.

3. Soil: It prefers well-draining, slightly acidic to neutral soil. However, it can tolerate a range of soil types, including sandy, loamy, or clay soils.

4. Watering: Keep the soil consistently moist, especially during the establishment period. Once established, Patti O Box Holly is relatively drought-tolerant but will benefit from regular watering during dry spells.

5. Pruning: Pruning can be done as needed to maintain the desired shape and size. Patti O Box Holly responds well to pruning and can be shaped into formal hedges or left with a more natural appearance.

6. Fertilizing: Apply a balanced fertilizer in spring to promote healthy growth and berry production. Follow the manufacturer's instructions for application rates.

7. Pest and Disease Resistance: Patti O Box Holly is generally resistant to pests and diseases. 

8. Landscape Uses: Patti O Box Holly is commonly used in landscapes as a low hedge, border plant, or container plant. Its compact size, neat appearance, and versatility make it a popular choice for adding structure and greenery to gardens.

Overall, Patti O Box Holly is valued for its compact size, glossy foliage, and ease of care. It's a versatile plant that can add year-round interest to gardens and landscapes.