Feathery-leaved and producing pink, puffy flowers in summer, the mimosa tree (Albizia julibrissin) is a fast-growing tree native to Asia. The many seeds readily sprout, making this species a noxious, weedy, tree species, albeit ornamental, across much of the United States.
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Mimosa trees attain an umbrella-like shape with open branches. A mature height ranges between 20 and 35 feet tall with a width of 25 to 35 feet. Trees growing in partial shade or crowded by nearby competitive trees mature with abnormal canopy shapes.
Fastest growing when young, the mimosa sapling adds between 3 to 6 feet of size annually. Once established, a mimosa tree adds between 18 to 24 inches of branch length a year on average, occasionally up to 36 inches.
The fast growth rate of this tree means it reaches it full mature size in 10 to 15 years. Full sun exposure in a fertile, moist soil hastens maturity rate.
Mimosa trees are notoriously weak-wooded. Strong winds or ice causes limbs to break off, disrupting growth habit and size. Moreover, this tree species is susceptible to verticillium wilt, a vascular disease that causes premature death.