Tree Of Heaven

Also known as:
Ailanthus
Family:
Simaroubaceae
Origin:
China

General description

Deciduous tree up to 30m, usually dioecious, grey bark, often suckering. Pinnate leaves approx 60cm long, 11-25 leaflets, unpleasant odour when crushed. Flowers (Dec-Jan) small, greenish, in large clusters at the branch tips, strong unpleasant smell. Fruits in distinctive clusters, dry straw-colored or reddish brown fruits are winged with a single seed in the center, their shape resembling an airplane propeller.

Seed, suckers, resprouts from cut stumps & root fragments.

Prolific seeder, grows rapidly. Aggressive root system, produces toxins to prevent other plant species establishing.

Site management

Glyphosate is not recommended.

Recommended approaches

1. Pull or dig up young seedlings. Care must be taken to remove the entire plant including all roots and fragments, as these will almost certainly regrow.
2. Cut & stump treat within 5-15 mins (20% Garlon 4 + 80% oil diluent). Spray whole stump surface & sides to the ground line. Spring – summer.
3. Foliar & stem spray young plants - summer (200ml glyphosate + 20ml penetrant/10L or 5g metsulfuron + 20ml penetrant/10L).

Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

Similar species

rhus tree
Toxicodendron succedaneum

Rhus is a smaller tree, with smaller compound leaves which do not have a gland on each leaflet.

Japanese walnut
Juglans ailantifolia

Japanese walnut is a smaller tree, with less leaflets per compound leaf. The leaflets lack the characteristic gland that tree of heaven has.

Search tags

RPMS status

Surveillance - Whole Region
National Pest Plant Accord species - nationwide
tree of heaven - Main species image