Albizia, Mimosa Tree, Pink Siris, Persian Silk Tree 'Rubra'

Albizia julibrissin

Family: Fabaceae (fab-AY-see-ee) (Info)
Genus: Albizia (al-BIZ-ee-uh) (Info)
Species: julibrissin (joo-lih-BRISS-in) (Info)
Cultivar: Rubra




Water Requirements:

Unknown - Tell us

Sun Exposure:

Full Sun



Foliage Color:

Unknown - Tell us


15-20 ft. (4.7-6 m)


4-6 ft. (1.2-1.8 m)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:


Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Other details:

May be a noxious weed or invasive

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:


Agoura Hills, California

Los Angeles, California

Penn Valley, California

Rocklin, California

Brandon, Florida

Jacksonville, Florida

Saint Augustine, Florida

Brownstown, Indiana

Lexington, Kentucky

Massapequa, New York

Queens Village, New York

Burgettstown, Pennsylvania

Philadelphia, Pennsylvania

Boerne, Texas

Houston, Texas

Lubbock, Texas

Montague, Texas

Chantilly, Virginia

Richmond, Virginia

show all

Gardeners' Notes:


On Aug 16, 2013, reeCreations from Burgettstown, PA wrote:

i gathered the seed pods from a neighbor's tree of some 20' high. When planted, several sprouted, but only one survived. I kept it potted and treated it as a house plant for three years, bringing it inside in this zone 6 location. Last winter, left it outside, but still in the pot in a deep hole on the edge of the woods. this was a fairly protected area and last winter was not particularly harsh. planted it out in a very sunny, sloping location this spring (late may). It bloomed! plus, it has put on at least a foot in height. I have great hopes for it.


On Aug 26, 2003, jackpeg1 from Richmond, VA wrote:

These are beautiful trees that attract many birds. However, they are fragile even though you can see them growing abundantly on roadsides throughout Virginia. There is a blight of some kind that attacks them, especially when they are five or more years old. The disease will kill all tress within 100 feet or more. The blooms are also easily damaged by Japanese beetles. These little monsters only have to touch the bloom to make it wilt. If anyone knows what the disease is and how to prevent it, please email me at [email protected].


On Jul 26, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

'Rubra' is a cultivar with deep cherry pink/almost red blooms. The intensity of the flower color will vary, and it seems to be luck of the draw whether one gets a deeper or lighter shade of flowers.


On Jul 25, 2003, suncatcheracres from Old Town, FL wrote:

I've always loved mimosa trees, despite their messy, invasive qualities here in the Southeast US, but have never seen one this intensely colored--it's quite beautiful, and I will search for some seeds of this almost red variety.