Plant Profile: Cercidiphyllum japonicum

Cercidiphyllum is a genus that encompasses two species of plants, both referred to as Katsura. These species are the sole representatives of the family Cercidiphyllaceae. Originating from Japan and China, this genus is recognized as one of the largest hardwoods in Asia. The term "Katsura" is derived from Japanese, and it describes a medium-sized deciduous tree characterized by a full, dense, pyramidal shape in its youth, which evolves into a more variable form with age, featuring low, stiffly arching branches. The bark of older trunks is shaggy and has loose ends. Trees within the Cercidiphyllum genus develop spurs along their twigs, which are short stems adorned with closely spaced leaves. Flowering occurs in March or April, resulting in the production of winged seeds. Various cultivars are cultivated, including 'Aureum', 'Heronswood Globe', 'Pendula', and 'Ruby'.

For optimal growth, this tree should be planted in full sunlight, in moist, organically rich, well-drained soil, and it requires sufficient water during its establishment phase. The new leaves emerge in a reddish-purple hue, transition to green as they mature, and then turn apricot yellow in the fall before they drop. The scent of the decaying leaves in autumn resembles that of caramel or burnt sugar, akin to cotton candy. The scientific name, Cercidiphyllum, highlights the similarity of its leaves to those of Cercis (redbuds); however, these two unrelated genera can be easily differentiated, as redbud leaves are arranged alternately rather than oppositely. This tree is well-suited for expansive areas such as parks, golf courses, commercial properties, or as a street tree.

**Quick Identification Tips:**

**Insects, Diseases, and Other Plant Issues:** This tree is generally resilient, facing no significant insect or disease threats. However, it can experience stress from drought and wind, and it tends to exhibit poor leaf coloration in alkaline soils. Additionally, transplanting can pose challenges.