Mornington Peninsula Coastal Garden
A layered, resilient coastal garden designed to withstand harsh salt winds and seasonal extremes. This Mornington Peninsula property features a cur...
Eucalyptus robusta – Swamp Mahogany
- Regular price
- $555.00
- Sale price
- $555.00
- Regular price
-
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A GRADE STOCK, EVERY TIME.
Learn About Your New Eucalyptus robusta - Swamp Mahogany
Eucalyptus robusta, known as Swamp Mahogany, is a fast-growing and hardy Australian native tree perfectly suited for wetter or coastal environments. Reaching heights of 15–25 meters with a broad 8–12 meter canopy, it offers dense, glossy evergreen foliage and creamy-white flowers from winter to spring that attract pollinators and support local wildlife.
Its remarkable tolerance to waterlogged, clay, and acidic soils makes it a dependable choice for challenging sites such as wetlands and coastal buffers. Thriving in full sun and withstanding light frost and coastal exposure, Swamp Mahogany requires low maintenance and moderate to high moisture, especially during establishment.
This tree looks excellent in landscapes where resilience meets natural beauty — ideal for shelterbelts, windbreaks, feature planting, and habitat restoration. If you want a reliable, fast-growing tree that enhances biodiversity while providing year-round shade and structure, Eucalyptus robusta is a standout performer.
Plant Profile
Planting & Spacing Tips
Post Planting Care
Tips for Various Soil Types
1. Botanical & Physical Characteristics
BOTANICAL NAME:
Eucalyptus robusta
GENUS:
Eucalyptus
BOTANICAL SPECIES:
robusta
COMMON NAME:
Swamp Mahogany
FAMILY:
Myrtaceae
EVERGREEN / DECIDUOUS:
Evergreen (foliage year round)
FOLIAGE TYPE
FORM & SHAPE
2. Growth & Environmental Conditions
GROWTH RATE
EXPECTED GROWTH PER YEAR
Approx. 1 – 1.5 m per year
MATURE HEIGHT
15m - 30m Approximately
MATURE WIDTH
8 – 12 meters
SUNLIGHT EXPOSURE
FROST TOLERANCE
Frost Tolerant – Can handle light to moderate frost once established.
AUSTRALIAN NATIVE?
Yes
3. Practical Uses & Flowering
USES:
FLOWER COLOUR
Cream
FLOWER TYPE
FLOWERING PERIOD
Planting Tips
Plant Spacing
Ensuring A Strong Start
Root Ball Dimensions (Width × Depth) for Planting
Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.
- 30cm Pot: 33cm (W) × 30cm (D)
- 40cm/45L Pot: 44cm (W) × 41.5cm (D)
- 50cm Pot: 49.5cm (W) × 35.2cm (D)
- 70L Pot: 55cm (W) × 41.8cm (D)
- 100L Bag: 50.6cm (W) × 52.8cm (D)
- 100L Pot: 66cm (W) × 49.5cm (D)
- 150L Bag: 66cm (W) × 55cm (D)
- 200L Bag: 71.5cm (W) × 60.5cm (D)
- 300L Bag: 88cm (W) × 63.8cm (D)
- 400L Bag: 99cm (W) × 66cm (D)
- 500L Bag: 122cm (W) × 66cm (D)
- 750L Bag: 134cm (W) × 69cm (D)
- 1000L Bag: 146.3cm (W) × 71.5cm (D)
- 2000L Bag: 176cm (W) × 82.5cm (D)
Post Planting Care
When planting a new tree or shrub, proper watering is essential to ensure healthy establishment and long-term growth. Follow these guidelines to give your plant the best start:
- Immediately After Planting:
Water generously right after planting to settle the soil around the roots and eliminate air pockets. This helps the roots make good contact with the soil. - First Three Months (Establishment Phase):
The initial three months are critical for root development. Water deeply twice daily (morning and evening) to encourage strong, deep root growth. - Irrigation Systems:
If using an irrigation system, adjust it to provide adequate water during the establishment phase. Ensure the water reaches the root zone without overwatering. - Weather Considerations:
Adjust watering based on weather conditions. Increase frequency during hot, dry periods and reduce it during cooler, wetter seasons. - Ongoing Care:
After the establishment phase (3 months), gradually reduce watering frequency but ensure the plant receives consistent moisture, especially during dry spells.
Long Term & Ongoing Care
Growing Your Eucalyptus robusta – Swamp Mahogany in Various Soil Types
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FAQ
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