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...
Magnolia Grandiflora 'Supergem'
- Regular price
- $800.00
- Sale price
- $800.00
- Regular price
-
Tax included.
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A GRADE STOCK, EVERY TIME.
Learn About Your New Magnolia grandiflora 'Supergem' - Supergem Southern Magnolia
Magnolia grandiflora 'Supergem' is a compact and elegant Southern Magnolia cultivar, prized for its smaller size and lush, dark green foliage with velvety bronze undersides. Growing 6–8 meters tall and 3–4 meters wide, it fits well in landscapes where space is limited but impact is desired.
This evergreen tree produces large, fragrant creamy-white flowers, 20–25 cm across, from late spring through early summer, sometimes blooming sporadically throughout the season. It features a pyramidal to rounded crown with dense branching, making it ideal as a specimen tree or privacy screen.
'Supergem' thrives in well-drained, acidic soils, tolerates urban pollution, and is moderately drought-tolerant once established. Preferring full sun to partial shade, it requires minimal pruning after flowering to maintain shape.
A perfect choice for adding classic magnolia beauty and resilience to smaller gardens or formal landscapes.
Plant Profile
Planting & Spacing Tips
Post Planting Care
Tips for Various Soil Types
1. Botanical & Physical Characteristics
BOTANICAL NAME:
Magnolia grandiflora 'Supergem'
GENUS:
Magnolia
BOTANICAL SPECIES:
grandiflora
COMMON NAME:
Supergem Southern Magnolia
FAMILY:
Magnoliaceae
EVERGREEN / DECIDUOUS:
Evergreen (foliage year round)
FOLIAGE TYPE
FORM & SHAPE
2. Growth & Environmental Conditions
GROWTH RATE
EXPECTED GROWTH PER YEAR
Approx 20 – 40 cm per year (moderate)
MATURE HEIGHT
6m - 10m Approximately
MATURE WIDTH
3 – 4 meters
SUNLIGHT EXPOSURE
FROST TOLERANCE
Frost Tolerant – Can handle light to moderate frost once established.
AUSTRALIAN NATIVE?
No
3. Practical Uses & Flowering
USES:
FLOWER COLOUR
White
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 Magnolia Grandiflora 'Supergem' in Various Soil Types
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FAQ
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