Silvertop-ash
Eucalyptus sieberi · Myrtaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around silvertop-ash and prepare for winter.
ID card
- Family
- Myrtaceae
- Form
- Tree
- Foliage
- Evergreen
- Flowering
- Spring to summer (white or cream flowers)
- Mature size
- 15 to 25 m tall
- Growth
- Fast
- Hardiness
- Moderate (tolerates down to approximately -10°C)
- Origin
- Australia (New South Wales)
Care
Exposure
Eucalyptus sieberi demands full sun exposure to develop well. Install it in an open location, away from walls that reflect too much heat. This tree tolerates winds without difficulty, unlike many other species.
Watering
Once established, Eucalyptus sieberi tolerates drought well thanks to its deep root system. Water regularly during the first three years after planting to promote rooting. Then reduce water inputs, except during prolonged drought periods.
Soil
This eucalyptus prefers well-drained soil and does not tolerate waterlogging. It adapts to poor and even slightly acidic soils. Improve drainage if your terrain is clayey or compact by adding sand or gravel when planting.
Pruning and structure
Little pruning is necessary once the form is established. Remove dead, diseased, or crossing branches to maintain an airy silhouette. Pruning young plants promotes more robust rooting and better branching.
Fertilizer
A moderate application of balanced fertilizer in spring is generally sufficient. Once mature, this hardy tree needs little additional nutrition. Avoid excess nitrogen, which weakens wood structure.
Health and pests
Eucalyptus sieberi is generally robust. Watch for scale insects and spider mites in dry and hot conditions. Excellent drainage and good air circulation minimize risks of root rot or fungal issues.
Did you know?
Eucalyptus sieberi, called 'Stringybark eucalyptus' in English, bears fibrous and exfoliating bark that peels off in long strips: this trait allows it to avoid accumulation of debris and parasitic insects. In Australia, these trees play a major role in the ecosystem and the evolution of koalas, which consume their leaves.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- Blue gumEucalyptus globulus
- MyrtleMyrtus communis
- MānukaLeptospermum scoparium
- Strawberry guavaPsidium cattleianum
- Snow gumEucalyptus pauciflora
- Woolly TeatreeLeptospermum lanigerum
Tips generated and checked by Viridia — adapt them to your local climate.