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Ash (Black)


Height and Spread When mature, Black Ash trees may reach heights between 9.3 and 15.2 metres but only 4.6 to 9.3 metres in width.

Hardiness Zone 3

Preferred growing conditions Grows best in partial to full sun sites with a reasonable, steady source of moisture.

Form Black Ash trees are medium to large trees which have a upright, narrow form.

Flower/seeds Greenish-yellow pointy flowers; trees may be either male or female. Tan coloured seed pods have a single ‘wing’ and appear in clusters 12 to 16 centimetres long.

Leaf There are 7 to 11 serrated leaflets on each side of a central stalk that create a single ‘leaf’. A single leaf may be 12 to 20 centimetres long. Leaves are dark green on top and lighter green beneath.

Bark/wood Bark is usually grey. When the tree is young, it is smooth, but ‘cracks’ as the tree matures.

Fruit Not applicable

Pruning Prune to keep shape and remove damaged limbs. Sterilize pruning saws and shears with methanol (gasline anti-freeze) between cuts and between trees.

Problems (Disease/Insects)

Gall, ash plant bug