Grevillea robusta

Regular price: $570.00
Sale price: $570.00
Regular price

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Size:

100L 40cm/45L 40cm

TO PLANT WITH YOUR Grevillea robusta

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Description

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Grevillea robusta, commonly known as the Silk Oak or Australian Silver Oak, is a splendid evergreen tree native to Australia. This ornamental tree is renowned for its elegant appearance, featuring feathery, fern-like foliage and striking orange-red flowers that create a visually captivating display. With a mature height of up to 30 meters, Grevillea robusta adds a touch of grandeur to gardens, parks, and landscapes.

Common Name: Silk Oak, Australian Silver Oak
Mature Height (meters): Up to 30 meters
Mature Width (meters): Varies with age but typically 10-15 meters
Spacing: Allow ample space to accommodate its mature width and height.
Foliage: The fern-like, pinnately compound leaves are a distinctive feature, providing a lush and tropical appearance.
Flowering Period: Grevillea robusta produces stunning orange-red flowers in clusters, attracting birds and pollinators.
Form/Habit: Tall and upright with a symmetrical, conical crown.
Uses: Ideal for larger gardens, parks, and open spaces. Often used as a shade tree or as an ornamental specimen due to its impressive foliage and flowers.
Evergreen/Deciduous: Evergreen
Tolerates: Grevillea robusta can tolerate a variety of soil types, including clay and sandy soils. It is also relatively drought-tolerant once established.
Drought Hardy: Yes, moderately drought-tolerant once mature.
Sun: Full sun to partial shade
Maintenance: Low to moderate
Water Requirement: Regular watering during establishment; reduce frequency as it matures.

Description

Additional Information You Should Know About Grevillea robusta

Height Guide For Grevillea robusta

Why Choose Grevillea robusta For Your Garden?

How To Grow Grevillea robusta In Different Soil Types

Optimal Soil Conditions for Fast Growth and Flowering

Ideal Drainage:
Thrives in well-drained soils, especially important in wetter climates.

Well-Draining Soil:
Vital to support its rapid growth and prolific flowering.

If you have the following soil, here are some tips for you:

Sandy Soils:
Clay Soils:
Loamy Soils:
Acidic or Alkaline Soils:

Planting Your Grevillea robusta: Ensuring A Strong Start

How to Plant Grevillea robusta:

Select an Ideal Location: Choose a location with well-draining soil and sufficient space for this tree's eventual size.

Dig the Planting Hole: Dig a hole that's as deep and twice as wide as the root ball.

Position the Tree: Place the tree in the hole, ensuring the top of the root ball is level with the surrounding soil.

Backfill with Soil: Fill the hole with soil, gently tamping it down to remove air pockets.

Water Thoroughly: Provide a generous watering to help the tree settle in.

Watering Requirements After Planting

When you plant a new tree, it's crucial to give it the right start by ensuring it receives sufficient water. Here’s a general guideline for watering your newly planted tree:

Immediately After Planting: Water your tree generously right after planting your Grevillea robusta to settle the soil around the roots and eliminate any air pockets.
First Three Months: The initial three months are critical for the establishment of the tree. During this period, the tree should be hand watered twice daily, in the morning and evening. This helps the roots grow deep and strong.
Irrigation System: If you have an irrigation system, adjust it to ensure the tree gets adequate water during these first months.
Adjusting to Weather Conditions: Always consider the weather conditions and adjust your watering accordingly. In hotter and drier periods, additional watering may be necessary.

Consistent attention to your tree’s watering needs during this initial period will help ensure its healthy growth and long-term success in your garden.

Root Ball Guide

Here is our guide for planting your trees with the appropriate root ball dimensions. When planting, we recommend digging a hole that is 10% larger than the size of your pot, and teasing the rootball before planting to promote better root growth.

Root Ball Dimensions:

40cm Pot: 44 x 38.5 cm
45L Bag: 41.8 x 41.8 cm
50cm Squat Pot: 49.5 x 34.1 cm
50cm Pot: 49.5 x 35.2 cm
70L Pot: 55 x 41.8 cm
75L Bag: 55 x 48.4 cm
90L Pot: 59.4 x 44 cm
100L Bag: 50.6 x 52.8 cm
100L Squat Bag: 58.3 x 49.5 cm
100L Pot: 66 x 49.5 cm
150L Bag: 66 x 55 cm
155L Pot: 74.8 x 52.8 cm
200L Bag: 71.5 x 60.5 cm
280L Pot: 91.3 x 55 cm
300L Bag: 88 x 63.8 cm
400L Bag: 99 x 66 cm
500L Bag: 122 x 66 cm
1000L Bag: 146.3 x 71.5 cm
2000L Bag: 176 x 82.5 cm

Follow these dimensions to ensure a smooth planting process and optimal growth for your new tree.

Caring For Your Grevillea robusta

Caring for Your Grevillea robusta:

Watering: During the first few years, maintain consistent soil moisture. Reduce watering frequency as the tree matures.

Pruning: Prune to maintain shape and remove dead or damaged branches. This tree typically requires minimal pruning.

Fertilization: Apply a balanced, slow-release fertilizer in spring to promote healthy growth.

Frequently Asked Questions About Grevillea robusta

Frequently Asked Questions (FAQs):

Q: Can Grevillea robusta tolerate drought?
A: Yes, once established, Grevillea robusta is moderately drought-tolerant, making it suitable for regions with dry spells.

Q: What type of soil does it prefer?
A: Grevillea robusta can thrive in various soil types, including clay and sandy soils, as long as they are well-draining.

Q: Are the orange-red flowers attractive to wildlife?
A: Yes, the vibrant orange-red flowers of Grevillea robusta are known to attract birds and pollinators, adding to the tree's appeal in the garden.

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