An Introduction to Holly Species and the Characteristics of Common Varieties

Holly is the collective name for plants in the genus Ilex of the family Aquifoliaceae. Most are evergreen trees or shrubs with leathery, glossy leaves, and some varieties bear small red or black fruits that remain on the branches for a long time, giving them high ornamental value. They are highly adaptable and tolerate pruning well, making them one of the most widely used tree species in landscaping.

Common holly species include Chinese holly (Ilex cornuta), large-leaved holly (Ilex latifolia), rusty-leaved holly (Ilex rotunda), and Japanese holly (Ilex crenata). Chinese holly has spiny leaf margins and bright red fruits and is often grown for ornament or used medicinally; large-leaved holly has broad leaves, and its young leaves can be used to make kuding tea; the bark and leaves of rusty-leaved holly also have some medicinal value; Japanese holly is a low-growing plant with fine, dense foliage, suitable for hedges or bonsai. In addition, there is the introduced winterberry (Ilex verticillata), whose branches are covered with red berries after the leaves drop in winter, and it is often used for cut-branch decoration.

Plants in the genus Ilex are mostly dioecious. If the goal is fruit display, a pollinator tree must be planted alongside, otherwise they will bear little or no fruit. As for care, holly prefers a warm, humid environment; most varieties are fairly shade-tolerant and can also withstand a certain degree of drought. With proper watering and fertilizing during the growing season and timely pruning, a good plant shape can be maintained.

It is worth noting that what is commonly called large-leaved box (Euonymus japonicus) in landscaping is not a true holly; it belongs to the family Celastraceae and is only commonly nicknamed "holly" because its leaf shape resembles that of holly. When buying, you can distinguish them by their flower and fruit characteristics and leaf texture to avoid confusion.