Common Name Persian silk tree, silk tree, pink silk tree, mimosa tree

Botanical Name Albizia julibrissin

Family Fabaceae

Plant Type Tree

Mature Size 20-40 ft. tall, 20-50 ft. wide

Sun Exposure Full, partial

Soil Type Moist but well-drained

Soil pH Acidic, neutral, alkaline

Bloom Time Summer

Flower Color Pink

Hardiness Zones 6-9 (USDA)

Native Area Middle East, Asia

Toxicity Toxic to animals 

 

The seeds contain a neurotoxin that when ingested can be toxic to livestock and dogs.

 

The Silk Tree will take advantage of disturbed land areas.  It grows vigorously 

and can displace native trees and shrubs. It produces a large number of seeds 

and it will  resprout when cut back or damaged. It is a strong competitor for 

native species in open areas, along roadsides and forest edges due to its ability 

to grow in different soil types and its large production of seeds. When planted 

near homes, it requires significant clean up from shedding of their leaves, blooms, 

and seed pods. The tree can tolerate a variety of soils and moisture conditions 

because its roots have the ability to produce nitrogen. Mimosa can grow in dense 

stands which reduces sunlight and nutrients that preferred species require. It 

can also become a problem along banks of waterways, where its seeds are easily 

transported in water.