Persian silk tree
Albizia julibrissin
Persian silk tree is a fast-growing, deciduous small tree native to a broad arc from Iran and the Caucasus east through China and Korea, prized for its show-stopping pink powder-puff flowers in summer and delicate, fern-like bipinnate foliage. It thrives in hot, dry, sunny sites and establishes quickly, making it a striking focal-point specimen in zones 6b-9b. The honest catches are several: in the southeastern United States it is a documented invasive weed, seeding prolifically and escaping into roadsides and forest margins; it is short-lived in much of its US range due to mimosa vascular wilt (Fusarium); and its seeds, bark, and leaves contain toxic compounds, so fallen seedpods should be kept away from children and pets.
Climate fit: narrow (26/100)
Focal point
Pollinator
Structure
Light
Full sun
Water
Low water
Mature size
16-40 ft tall · 30 ft apart
Hardy in zones
6b-9b
cold to frosty winters
Native in Illinois
No
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Insect-pollinated - Wikipedia reports the nectar-rich flowers 'have been observed to attract bees, butterflies and hummingbirds.' Cross-visitation by insects is the norm, but the tree sets seed abundantly even as an isolated specimen, a major driver of its invasive behaviour.
Cold hardiness
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Marginal
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
⚠→✓
A marginal fit today, but a stronger fit by 2050.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
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Where this plant fits
Suitable across 29 ecoregions - 20 climate-resilient through 2070 · 1 suited today · 8 newly possible by 2070. Best matches first.
Plant this, not that
Better fit for this place
For Chicago, IL, these are replacement suggestions: similar plants with a stronger hardiness fit now and/or in 2050.
Better current fit; still holds in 2050
Now: well-suited
2050: well-suited
Better current fit; still holds in 2050
Now: well-suited
2050: well-suited
Better current fit; still holds in 2050
Now: well-suited
2050: well-suited
Better current fit; still holds in 2050
Now: well-suited
2050: well-suited
Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Educator packet
Plant packet
Persian silk tree educator packet
Persian silk tree is a fast-growing, deciduous small tree native to a broad arc from Iran and the Caucasus east through China and Korea, prized for its show-stopping pink powder-puff flowers in summer and delicate, fern-like bipinnate foliage. It thrives in hot, dry, sunny sites and establishes quickly, making it a striking focal-point specimen in zones 6b-9b. The honest catches are several: in the southeastern United States it is a documented invasive weed, seeding prolifically and escaping into roadsides and forest margins; it is short-lived in much of its US range due to mimosa vascular wilt (Fusarium); and its seeds, bark, and leaves contain toxic compounds, so fallen seedpods should be kept away from children and pets.
Scientific name
Albizia julibrissin
Plant type
tree
Hardiness
6b-9b
Light
full-sun
Moisture
low
Spacing
360 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Persian silk tree (Albizia julibrissin). Retrieved 2026, August 20, from https://plotwright.com/plants/albizia-julibrissin
Sources used for this record
This record is compiled from the sources below.







