Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

$150.00

Tax included. Shipping calculated at checkout.

Size: 30cm/33cm

30cm/33cm 40cm/45L 50cm 75L

All stock is grown, maintained and graded in strict accordance with AS 4373-2007, Australian Standard for Nursery Stock.

Current Stock Height Guides

30cm/33cm: Enquire within for height guide information.
40cm/45L: Enquire within for height guide information.

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you mustconfirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Mature Height & Width

Mature Height: 4 – 6 metres

Mature Width: 3 – 4 metres

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is expected to grow 30 – 50 cm per year (moderate).

Root Ball Dimensions

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 / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (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)

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Contact

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Email: sales@evergreentrees.com.au

Phone: (03) 7042 3318

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Enriched Planting Mix (AO Certified)

$21.95

Features and Benefits

Organically certified product
Improves aeration for roots
A rich blend of Pure Magic Compost, composted animal manure, Gypsum, composted coarse bark and wetting agent
Excellent to mix with heavy clay soils, an organic mixture with added gypsum which is perfect for exotic plants
Revitalises tired soils, adds nutrient and organic matter, no chemical additives, weed free
Assists in retaining moisture in the soil longer after rain or watering

Directions For Use

Water plant well at least several hours prior to planting.
Dig a hole at least twice the width of the pot and 7cm deeper than the pot.
Mix Grow Better Enriched Planting Mix with the soil that has been dug out of the hole, adding about 1/3 planting mix.
Spread a 7cm layer of improved soil in the hole and remove plant from the pot. Tease roots gently if the root ball is very firm and place plant in the planting hole. Check that pot soil is level with the surrounding soil surface level, not higher or lower.
Fill in the hole with improved soil mixture, firm down soil and water well adding Grow Better Plant Starter to final watering.

View full details

Type:

Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

Feature Tree
Driveway Border
Avenue Planting
Shade Tree
Council or Civic Landscapes

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia works in an:

Formal Garden – structured, symmetrical design with clipped shapes.
Contemporary / Architectural Garden – striking forms for bold design statements.
Heritage / Traditional Garden – timeless, classic plantings for period homes.

Is Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia Evergreen or Deciduous?

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is an Deciduous (Defoliates throughout colder months) Tree

Mature Height & Width

Mature Height: 4 – 6 metres

Mature Width: 3 – 4 metres

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is expected to grow 30 – 50 cm per year (moderate).

Growth Rate of Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is expected to grow 30 – 50 cm per year (moderate).

They are considered to have a:

Medium Growth Rate

Frost Tolerance & Ideal Climate to plant Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

Is Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia frost tolerant?

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is Frost Hardy – Survives heavy and frequent frost without damage.

Does Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia Flower?

Robinia pseudoacacia ‘Umbraculifera’ does not produce ornamental flowers. Unlike the species form, this grafted cultivar rarely blooms and is grown primarily for its distinctive rounded “mop top” canopy and neat architectural form.

Does Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia flower?

No - Doesn't Flower

Flowering Period:

Not Applicable

Flower Type:

Not Applicable

Flower Colour:

Not Applicable

Is Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia an Australian Native Tree?

No

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is Native to Eastern North America, where Robinia pseudoacacia grows naturally in open forests, slopes, and well-drained woodland environments.

What is the Wildlife Value of Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia ?

Its dense rounded canopy provides useful shelter for small birds and beneficial insects within garden settings. While not a major nectar plant, the foliage and branching structure contribute habitat value by offering protected spaces for wildlife in urban and suburban landscapes.

How much Sunlight does Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia need?

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia will thrive best in:

Full Sun

Preferred Soil?

Robinia pseudoacacia ‘Umbraculifera’ performs best in well-drained sandy or loam soils with a neutral to slightly alkaline pH. It will also tolerate poorer soils provided drainage remains adequate. Avoid heavy clay or waterlogged conditions unless significantly improved, as excess moisture can restrict root health and growth. Keep soil evenly moist during establishment, then gradually reduce watering as the tree matures.

Is Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia Drought Tolerant?

Is Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia Drought tolerant?

As a young tree it benefits from regular watering to establish evenly, particularly during warmer months. Once established, Mop Top Robinia shows good drought tolerance and performs reliably through dry periods when planted in well-drained soil.

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How To Plant Your Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

Hole: Dig twice as wide as the root ball and the same depth.

Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

Recommended Planting Spacing For Your Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

Avenue planting: 3 metres apart for a uniform soft-textured avenue.

Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia is expected to grow 30 – 50 cm per year (moderate).

Medium Growth Rate

Long Term Care For Your Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia

Watering: Water deeply twice weekly through the first 12 months. Once established, reduce to once weekly in dry periods. Mulch helps maintain consistent moisture.

Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

Pruning: Minimal pruning required. Light tip prune in late winter to maintain shape, and remove lower branches as the tree grows to develop a clean feature trunk.

Fertilising: Apply a slow-release general-purpose fertiliser in early spring and again in autumn for steady growth and consistent foliage colour.

Pest and disease: Hardy against most pests and diseases. Occasional scale or caterpillar inspection in warm humid conditions is all that's needed.

Planting Your Robinia pseudoacacia ‘Umbraculifera’ – Mop Top Robinia in Different Soil

Robinia pseudoacacia performs best in well-drained loam or sandy loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

Clay soil: Improve drainage with gypsum and organic compost before planting.

Loam: The preferred soil for steady root development and consistent growth.

pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.

Frequently Asked Questions

Q: Does Mop Top Robinia produce flowers?
A: The ‘Umbraculifera’ cultivar rarely flowers and is primarily grown for its rounded canopy.

Q: How large does Mop Top Robinia grow?
A: It typically reaches around 4–6 metres tall with a rounded canopy about 3–4 metres wide.

Q: Is Mop Top Robinia suitable for small gardens?
A: Yes, its compact globe-shaped canopy makes it suitable for smaller landscapes and driveway planting.

Q: Does it require regular pruning?
A: Only occasional shaping or removal of stray growth is needed to maintain its rounded form.