| Scientific Name: | Ailanthus altissima |
| Common Name: | tree of heaven |
| Family Name: | Simaroubaceae |
| Origin: | S.E. Asia / Japan / China |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Invasive plant, Tree - deciduous |
| Mature Size: | 22 - 30m x 10 - 15m (height x width) |
| Habit: | Arching, Spreading, Upright |
| Form: | Oval - vertical |
| Texture: | Coarse |
| Landscape Uses: | Shade tree, Specimen plant, Street (boulevard tree), Tall background |
| Exposure: | Full sun, Part sun/part shade, Filtered shade |
| Soil or Media: | Acidic, Rocky or gravelly or dry, Well-drained |
| Leaves: | Compound, Alternate, Soft flexible, Pinnate venation, Glandular hairs, Even-pinnate, Lanceolate, Oblong, Ciliate, Dentate, Entire |
| Flowers: | Panicle, White, Green, Jun |
| Fruit: | Samara, Red, Sep-Oct, (Persistent) |
| Key ID Features: | |
| Leaves alternate, even-pinnately compound, 45-60cm long; leaflets 14-26, most lanceolate-oblong, 4-8cm long x 3-6cm wide, margins mostly entire except minutely ciliate and for 2-4 small asymmetrical lobes near the base; panicles 20-40cm long with greenish white florets; samaras turning from green-pink to orange-red then brown, most 3-4cm long. Winter ID: leaf scar is larger than bud, bud small and round, samaras persistent or on ground. | |