We want to hear from you! Please take this short, anonymous survey to help us improve the DG home page.

Silk Tree, Mimosa Tree, Pink Siris 'E.H. Wilson'

Albizia julibrissin

Family: Mimosaceae
Genus: Albizia (al-BIZ-ee-uh) (Info)
Species: julibrissin (joo-lih-BRISS-in) (Info)
Cultivar: E.H. Wilson



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


30-40 ft. (9-12 m)


10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)


USDA Zone 5b: to -26.1 C (-15 F)

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)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Sun to Partial Shade


Pollen may cause allergic reaction

Bloom Color:


Bloom Time:

Mid Summer



Other details:

May be a noxious weed or invasive

Soil pH requirements:

4.6 to 5.0 (highly acidic)

Patent Information:


Propagation Methods:

From seed; direct sow outdoors in fall

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


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

Orange Beach, Alabama

Roslindale, Massachusetts

Reno, Nevada

Ithaca, New York

Conway, South Carolina

Gardeners' Notes:


On Dec 23, 2014, coriaceous from ROSLINDALE, MA wrote:

This cultivar differs from the species in its additional cold hardiness.

In the southeastern US, this tree species is commonly afflicted by vascular wilt disease (fusarium), which can kill it to the ground. Other diseases and pests are also common, including nematodes. From what I hear, I'm surprised that it still can be cultivated in the south.

These problems don't seem to be so troublesome here in the north. It's still an aggressive self-sower here in Massachusetts, but it doesn't invade natural areas.


On Jul 27, 2009, BajaBlue from Rancho Santa Rita, TX (Zone 8a) wrote:

Selected by E.H.Wilson in Korea, this variety of the Silk Tree has
dense fluffy clusters of bright-pink flowers, but most important, is
reputed to be more cold hardy by 10 degrees, greatly extending its

Good Drainage


On Jun 18, 2007, docturf from Conway, SC (Zone 8b) wrote:

A very nice flowering tree, but very susceptible to Fusarium Wilt, a soil-borne fungus in this part of South Carolina (coastal area). Docturf


On Jun 14, 2007, CodyMody7890 from Reno, NV (Zone 6a) wrote:

this is a great tree and it's leaves open in light and close in darkness ! very attractive this is my first year growing this and i bought it in a tube size at Forest Farm online and got it shipped in the mail and it was very alive and very healthy ! not sure about winter hardiness yet we get alot of drying winds up here so if anyone knows TELL ME !:)