tree of heaven
Ailanthus altissima
Description:
Ailanthus altissima, commonly known as the Tree of Heaven or Paradise Tree, is a deciduous tree belonging to the family Simaroubaceae. It is native to China and was introduced to other parts of the world due to its ornamental qualities and its ability to adapt to various environmental conditions.
Morphology: Ailanthus altissima is a medium to large-sized tree that can reach heights of 15 to 25 meters (50 to 80 feet), although in certain conditions, it can grow even taller. It has a distinctive appearance with a straight trunk that can be up to one meter (3 feet) in diameter. The bark is light grayish-brown and becomes rough and fissured as the tree matures.
The leaves of Ailanthus altissima are pinnately compound, meaning they consist of multiple leaflets arranged on opposite sides of a central axis or rachis. Each leaf typically has 10 to 41 leaflets, which are lanceolate or ovate in shape with pointed tips. The leaflets are glossy, dark green in color, and have serrated margins. They emit a strong odor when crushed, often described as resembling peanut butter or burnt rubber.
During the summer, Ailanthus altissima produces clusters of small, yellowish-green flowers. The flowers are not particularly showy and have a somewhat unpleasant smell. They are arranged in panicles at the tips of branches.
Following pollination, the tree produces elongated, flattened, winged seeds known as samaras. These samaras are light green when young and turn brown as they mature. They are easily dispersed by the wind due to their winged structure.
Range: Ailanthus altissima is native to northern and central China. However, it has been introduced and naturalized in many other regions around the world. It is known to thrive in temperate and subtropical climates and can adapt to a wide range of soil types. In its introduced range, it is considered an invasive species in many areas, including parts of North America, Europe, and Australia. It tends to colonize disturbed habitats, such as roadsides, abandoned lots, and urban areas.
Overall, Ailanthus altissima is known for its fast growth rate, ability to tolerate poor soil conditions, and highly aggressive behavior, which is why it is listed as a Restricted Species on the Wisconsin DNR Invasive Species List (NR40). Tree of heaven is the preferred host for the spotted lantern fly, an invasive insect that was introduced to Pennsylvania and has been found as close as Chicago, Illinois.
Details:
tree of heaven
USDA Symbol: | Common Name: | Scientific Name: |
---|---|---|
AIAL | tree of heaven | Ailanthus altissima |
ITIS TSN: 28827
Category: Dicot
Taxonomy
Kingdom: Plantae
Subkingdom:
Super Division: Spermatophyta
Division: Magnoliophyta
Subdivision:
Class: Magnoliopsida
SubClass: Rosidae
Order: Sapindales
Family: Simaroubaceae
Counties:
Duration: | Growth Habit: | Native Status: |
---|---|---|
Perennial | Tree | L48(I)HI(I)CAN(I) |
NR40 Listed Plant | Noxious Weed: | Invasive Species (NR40): | Threatened/Endangered: | WI Natural Heritage Index: | Wetland Status |
---|---|---|---|---|---|
Restricted | FACU;UPL |
Active Growth Period: Spring and Summer
Bloat: None
Carbon to Nitrogen Ratio: Medium
Coppice Potential: Yes
Conspicuous Fall Color: No
Fire Resistant: No
Flower Color: Green
Conspicuous Flower: Yes
Foliage Color: Green
Foliage Light Porosity Summer: Moderate
Foliage Porosity Winter: Moderate
Foliage Texture: Coarse
Fruit/Seed Color: Yellow
Growth Form: Single Stem
Growth Rate: Rapid
Height at Base Age (Max): 50
Known Alelopath: Yes
Leaf Retention: No
Lifespan: Short
Re-sproutability: Yes
Shape and Orientation: Rounded
Toxicity: Moderate
Height (min):
Height (max):
Root Type:
Leaf Type:
Leaf Arrangement:
Leaf Shape:
Vein Pattern:
Adapted to Coarse Textured Soils: Yes
Adapted to Medium Textured Soils: Yes
Adapted to Fine Textured Soils: Yes
CaCO3 Tolerance: High
Cold Stratification Required: Yes
Drought Tolerance: Medium
_Fire Tolerance: Medium
Hedge Tolerance: Low
Moisture Use: Medium
pH (Minimum): 4.1
pH (Maximum): 7.9
Planting Density per Acre, Minimum: 300
Planting Density per Acre, Maximum: 1200
Precipitation (Minimum): 14
Precipitation (Maximum): 90
Root Depth, Minimum (inches): 30
Salinity Tolerance: Medium
Shade Tolerance: Intolerant
Temperature, Minimum (°F): -18
Plant Spacing (min):
Plant Spacing (max):
Bloom Period: | Commercial Availability: | Fruit/Seed Abundance: |
---|---|---|
Late Spring | Routinely Available | High |
Fruit/Seed Period Begin: | Fruit/Seed Period End: | Fruit/Seed Persistence: |
---|---|---|
Summer | Fall | Yes |
Propogated by Bare Root: | Propogated by Bulbs: | Propogated by Container: |
---|---|---|
Yes | No | Yes |
Propogated by Corms: | Propogated by Cuttings: | Propogated by Seed: |
---|---|---|
No | Yes | Yes |
Propogated by Sod: | Propogated by Sprigs: | Propogated by Tubers: |
---|---|---|
No | No | No |
Seeds per Pound: | Seed Spread Rate: | Seedling Vigor: |
---|---|---|
14640 | Rapid | High |
Small Grain: | Vegetative Spread Rate: | Propagation Treatment: |
---|---|---|
No | Rapid |
Days to Stratify: | Direct Sowing Time: |
---|---|
Benefits:
Berry/Nut/Seed Product: | Christmas Tree Product: | Fodder Product: |
---|---|---|
No | No | No |
Fuelwood Product: | Lumber Product: | Naval Store Product: |
---|---|---|
Low | Yes | No |
Nursery Stock Product: | Palatable Browse Animal: | Palatable Graze Animal: |
---|---|---|
Yes | Medium | Low |
Palatable Human: | Post Product: | Protein Potential: |
---|---|---|
No | No | Low |
Pulpwood Product: | Veneer Product: |
---|---|
No | Yes |
Benefits: | Wildlife Food Value: | Wildlife Cover Value: |
---|---|---|
References:
- UW Extension video – Ailanthus altissima
- Wisconsin DNR Invasive Species website – Ailanthus altissima
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