Plant Profile: Tilia mongolica

The Mongolian Linden is a medium-sized ornamental deciduous tree belonging to the Malvaceae family, specifically the Linden group. It is the smallest member of this family, typically growing to about 30 feet in height and 25 feet in width. This species exhibits a slower growth rate compared to other Lindens and is characterized by its distinctive exfoliating bark and smaller leaves, which are three to five lobed. The tree has a pyramidal to rounded form. Finding the Mongolian Linden in nurseries can be quite challenging, and it is also known as the Mongolian Lime. A notable cultivar, 'Harvest Gold,' is a hybrid between the Mongolian Linden and the Littleleaf Linden, featuring leaves that resemble those of the latter.

Native to northern China and the far eastern regions of Russia, the Mongolian Linden produces soft, creamy wood that is favored by woodcarvers for crafting piano soundboards and certain guitar components. Its young leaves and shoots are edible, while the flowers can be dried to make tea.

The genus name, Tilia, is derived from Latin, meaning Linden or Lime Tree, and traces its roots to the Greek words "ptelea," meaning Elm tree, and "tillai," meaning Black Poplar, which collectively suggest the meaning "broad." The species name, mongolica, indicates its geographical origin.

This tree thrives in full sun to partial shade and prefers alkaline, loamy, or well-drained soils. Unlike many other Lindens, it is not tolerant of drought or salt spray, but it does transplant well and is less susceptible to aphid infestations.

Seed propagation can be difficult, as stored seeds often germinate slowly. It is advisable to use fresh seeds and place them in a cold frame, as germination may take up to 18 months. Spring is the optimal time for layering, and suckers or young shoots can be removed with as much root as possible for replanting.

The leaves of the Mongolian Linden are ovate, simple, and dark green with lighter undersides, featuring the unique three to five lobed structure that sets them apart from other Lindens. In summer, fragrant clusters of creamy yellow flowers bloom, and the tree produces grayish hairy nutlets as fruit.

The nectar from the flowers attracts butterflies and various insects.

Hardy in USDA Zones 3 to 5, the Mongolian Linden is well-suited for residential areas, parks, and urban streets.

**Quick Identification Tips:**

**Diseases, Insects, and Other Issues:**
The tree may be susceptible to verticillium wilt, and pests such as Japanese beetles and the linden borer can pose challenges. However, this species demonstrates resistance to aphids.