Ilex sugerokii

Ilex sugerokii (Sugeroki holly) is a perennial evergreen plant belonging to the Aquifoliaceae family. This species is recognized as a slow-growing shrub or a small tree, highly valued in professional horticulture for its dense, glossy foliage and its ability to maintain a compact, structured growth habit throughout the year.

The native range of this species is located in East Asia, primarily in Japan and parts of the surrounding high-altitude regions. It thrives in environments characterized by moderate humidity and cool mountain climates. In agricultural and horticultural contexts, it is primarily grown for its ornamental value in gardens, public parks, and as part of shaded landscape designs.

Botanically, the plant features leathery, elliptical leaves with finely serrated margins. Small, inconspicuous whitish flowers bloom from the leaf axils, typically in the spring season. Following the flowering phase, the plant produces small berry-like drupes that persist on the branches for an extended period, significantly enhancing its aesthetic appeal during late autumn and winter.

Successful cultivation of Ilex sugerokii requires strict adherence to soil and light preferences. The shrub performs best in acidic or slightly acidic, well-draining soils rich in organic matter. Partial shade is recommended to protect the foliage from heat stress and sunscorch, as this species is sensitive to intense direct sunlight during the peak summer months.

Standard agrotechnical practices include maintaining consistent soil moisture, avoiding waterlogged conditions, and applying mulch to protect the root zone from temperature fluctuations. Producers and gardeners should monitor the plants for specific health issues common to the Aquifoliaceae genus, including:

• Powdery mildew infections during periods of high humidity.
• Infestations of aphids and scale insects on young shoots.
• Root rot development caused by poor soil drainage.