Hetzi holly, also known as Ilex crenata 'Hetzii', is a hybrid cultivar of holly. Here's some information about it:

Appearance: Hetzi holly is an evergreen shrub with a dense, upright growth habit. It typically reaches a height of 3 to 4 feet and a spread of 4 to 5 feet. The leaves are glossy, dark green, and oval to lanceolate in shape, similar to other japanese holly species.

Sunlight: Hetzi holly prefers full sun to partial shade. 

Soil: It grows best in well-draining soil with good organic content. It can tolerate a range of soil types, including sandy, loamy, or clay soils, as long as they are not waterlogged.

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

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

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

Pest and Disease Resistance: Hetzi holly is generally resistant to pests and diseases. 

Landscape Uses: Hetzi holly is commonly used in landscapes as a specimen shrub, hedge, or a small screen. Its attractive foliage, dense growth habit.

Overall, Hetzi holly is valued for its ornamental features, low maintenance requirements, and adaptability to various growing conditions. It's a versatile plant that can add year-round interest to gardens and landscapes.