Scientific Name: Eucalyptus sieberi

Common Name: ironbark

Family Classification (Clade): Eudicots

Family: Myrtaceae

Form Description: Tree. Leaves: Juvenile – ovate, blue-green to glaucous. Adult – sickle-shaped, leathery, grey-green and glossy with marked semi-longitudinal veins.

Height (m): 20 – 40

Flowers: Umbels with 5-15 flowers.

Fruit: Woody capsules – pear-shaped with a level disc and 3 valves.

Municipality
Break O’DayDorsetGlamorgan-Spring BayNorthern Midlands
Plant Communities
Dry Eucalypt Forest
Habitat Notes

Local in the north-east from sea level to about 600m. Usually found on steep slopes with gravelly soils. Often forms pure stands with almost totally absent understorey.

Site Tolerance

Dry, Rocky

Soil Tolerance

Loam, Nutrient-poor, Well-drained

Frost Tolerance

Moderate

General Notes

May be quite ornamental, with dark hard deeply furrowed bark on trunk; bark on branches smooth and chalky white; young twigs reddish. Not suitable for suburban gardens due to mature size. Bee attracting. Produces valuable hardwood.

Propagation Calendar

  • Flowering Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Seed Collecting Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sowing Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Cutting Month
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Propagation Method
Seed

Seed Information

Seed Collection

Collect capsules and store in paper bags until valves open to release seed. A reliable seeder; best months to collect Sept-Feb.

Seed Treatment Method

Standard Scatter seed thinly on to damp potting mix. Hold seed in place by covering with more potting mix to approximately the depth of the seed size.

Seed Storage Life

10 years dry stored in refrigerator at 4°C

Seed Treatment Notes

Suitable for direct seeding. Otherwise 6-8 weeks to pricking out.

Germination Time

2-4 weeks