Gleditsia triacanthos 'Sunburst' - Sale - Evergreen Trees Direct

Gleditsia triacanthos 'Sunburst' - Evergreen Trees Direct

Gleditsia triacanthos 'Sunburst'

$250.00

Tax included. Shipping calculated at checkout.

Size: 40cm/45L

40cm/45L 100L 200L

Current Stock Height Guides

40cm/45L: 1.7m – 2.2m Approx.
100L: 2.1m – 2.5m Approx.
200L: 2.6m – 3.5m Approx.

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: 10m to 15m (approx.)

Mature Width: 8m to 15m

Gleditsia triacanthos 'Sunburst' is expected to grow 30cm to 60cm per year.

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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Shipping

Shipping is calculated at checkout based on the pallet space your order occupies in the truck and your delivery location.

There is no charge to calculate your freight.

Contact

Have a question or a list to send through to us?

Email: sales@evergreentrees.com.au

Phone: (03) 7042 3318

About Your New Gleditsia triacanthos 'Sunburst'

Gleditsia triacanthos 'Sunburst' flushes bright golden-yellow new foliage that ages to fresh green, so the canopy carries a two-tone glow right through the growing season. It is thornless and podless, which removes the mess and hazard that rule the straight species out of most gardens.

'Sunburst' grows to 10 to 15 metres tall and 8 to 15 metres wide at 30 to 60 centimetres per year, forming an open vase-shaped canopy of fine compound leaves. The foliage is so finely divided that it casts light dappled shade, which means lawn and understorey planting still thrive underneath.

'Sunburst' is frost hardy, surviving heavy and frequent frost without damage, and tolerates drought, compacted urban soils, salt and pollution once established. It grows in full sun to part shade and drops tiny leaflets that need no raking, which is why councils specify it so heavily.

Frequently Asked Questions

About Gleditsia triacanthos 'Sunburst'

How big does Gleditsia 'Sunburst' grow?

'Sunburst' reaches 10 to 15 metres tall and 8 to 15 metres wide, forming an open vase-shaped canopy. It suits streets, avenues, parks and larger gardens.

Is 'Sunburst' thornless?

Yes. 'Sunburst' is a thornless selection and also does not set seed pods, unlike the wild Honey Locust which carries large branched thorns and heavy pod litter.

Why is the foliage golden?

New growth emerges bright golden-yellow before maturing to fresh green. Flushes continue through the growing season, so the canopy always carries both tones at once.

Does anything grow under a Gleditsia?

Yes. The finely divided leaflets cast light dappled shade rather than dense shadow, so lawn and understorey planting continue to perform beneath the canopy.

Is leaf litter a problem?

No. The leaflets are very small and break down quickly into lawn and garden beds without raking, which is a significant advantage over broad-leaved shade trees.

Is 'Sunburst' frost hardy?

Yes. It survives heavy and frequent frost without damage and also tolerates drought, salt, pollution and compacted urban soils once established.

How far apart should I plant 'Sunburst' for an avenue?

Plant 8 to 10 metres apart for an avenue where canopies will meet, and keep trees clear of paving and underground services.

Enriched Planting Mix (AO Certified)

$21.95

Enriched Planting Mix is a certified organic blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent, bagged in 30L. It is built to be dug through existing garden soil at planting time rather than used on its own, and the gypsum is what sets it apart from a plain compost.

Gypsum helps break up heavy clay so water and roots can move through it, while the compost and manure return organic matter and nutrient to tired ground. The coarse bark holds structure and keeps air around the root zone, and the wetting agent keeps moisture in the soil longer after rain or watering.

Use it when planting trees, shrubs, roses, fruit trees and exotic garden plants, particularly into clay. Dig a hole twice the width of the pot and 7 centimetres deeper, then mix roughly one third planting mix through the excavated soil. Spread 7 centimetres of that improved soil in the base before setting the plant in.

Frequently Asked Questions

About Enriched Planting Mix

What is Enriched Planting Mix made from?

It is a blend of Pure Magic Compost, composted animal manure, gypsum, composted coarse bark and a wetting agent. Each part has a job. The compost and manure supply organic matter and nutrient, the gypsum works on clay structure, the bark keeps air around the roots and the wetting agent holds moisture in the soil.

What plants is it suitable for?

It suits exotic garden plants, including roses, ornamental and deciduous trees, fruit trees, shrubs and perennials, and it earns its keep most on heavy clay sites. It is a planting mix rather than a potting mix, so its job is improving soil at planting time. Phosphorus sensitive natives are the one clear exception.

Is it safe for natives?

No, not for the phosphorus sensitive ones. The composted animal manure in this blend lifts phosphorus well above what Proteaceae such as Banksia, Grevillea, Hakea and Protea will tolerate, and the result can be leaf burn, dieback and plant death. Use the Native Potting Mix for those species, or plant them into unimproved local soil.

Is it certified organic?

Yes. It is a certified organic product with no chemical additives, which is why the manure and compost in it are fully composted rather than raw. That makes it sound around fruit trees and vegetable beds, and it means you are adding genuine organic matter to your soil rather than a synthetic conditioner.

How much do I need?

Work on roughly one third planting mix to two thirds of the soil you dug out of the hole. For a shrub out of a 200 millimetre pot that is only a few litres. An advanced tree going into a large hole will take considerably more. Judge the quantity by the volume of the hole rather than the size of the plant.

Can I use it in pots?

It is not a potting mix and should not be used on its own in a container. The blend is designed to be diluted through garden soil, and used straight in a pot it holds too much water and settles badly. For containers, reach for a premium potting mix, or the native mix if you are potting natives.

Does it need to be watered in?

Yes. Water the plant well several hours before you plant it, then water thoroughly again once the hole is backfilled and the soil firmed down. That first deep watering settles the improved soil around the root ball and drives out air pockets. Keep the water up over the first few months while the roots establish.

View full details

Type: Garden Supplies

Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

Feature Tree
Avenue Planting
Shade Tree
Council or Civic Landscapes

Gleditsia triacanthos 'Sunburst' works in an:

Modern Garden – sleek, minimal, and design-led planting.
Woodland Garden – layered, naturalistic design under dappled light.
Heritage / Traditional Garden – timeless, classic plantings for period homes.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Is Gleditsia triacanthos 'Sunburst' Evergreen or Deciduous?

Gleditsia triacanthos 'Sunburst' is an Deciduous (Defoliates throughout colder months) Tree

Mature Height & Width

Mature Height: 10m to 15m (approx.)

Mature Width: 8m to 15m

Gleditsia triacanthos 'Sunburst' is expected to grow 30cm to 60cm per year.

Growth Rate of Gleditsia triacanthos 'Sunburst'

Gleditsia triacanthos 'Sunburst' is expected to grow 30cm to 60cm per year.

They are considered to have a:

Medium Growth Rate
Fast Growth Rate

Frost Tolerance & Ideal Climate to plant Gleditsia triacanthos 'Sunburst'

Is Gleditsia triacanthos 'Sunburst' frost tolerant?

Gleditsia triacanthos 'Sunburst' is Frost Hardy – Survives heavy and frequent frost without damage.

Does Gleditsia triacanthos 'Sunburst' Flower?

Gleditsia triacanthos ‘Sunburst’ produces small, greenish-yellow fragrant flowers in late spring to early summer. These subtle blooms are largely hidden within the foliage, with the tree’s standout appeal coming from its bright golden new growth rather than its flowering display.

Does Gleditsia triacanthos 'Sunburst' flower?

Yes - Flowers

Flowering Period:

Spring

Flower Type:

Catkin-like

Flower Colour:

Yellow

Is Gleditsia triacanthos 'Sunburst' an Australian Native Tree?

No

Gleditsia triacanthos 'Sunburst' is Native to North America, where Gleditsia triacanthos (Honey Locust) grows naturally in woodlands, valleys, and along riverbanks.

What is the Wildlife Value of Gleditsia triacanthos 'Sunburst' ?

Its nectar-bearing blooms attract bees and small pollinators, while the open canopy provides perching and foraging habitat for small birds. The seed pods formed later in the season offer food for wildlife, and the dappled shade supports beneficial insects, boosting garden biodiversity.

How much Sunlight does Gleditsia triacanthos 'Sunburst' need?

Gleditsia triacanthos 'Sunburst' will thrive best in:

Full Sun
Part Shade

Preferred Soil?

Gleditsia triacanthos ‘Sunburst’ performs best in well-drained loam or sandy loam soils and tolerates slightly acidic to slightly alkaline conditions. While hardy, it may struggle in heavy clay or poorly drained areas unless improved with organic matter and coarse material to increase aeration. Keep soil evenly moist during establishment, then transition to deep, occasional watering as the tree matures to support strong drought resilience, stable structure and vibrant golden foliage.

Is Gleditsia triacanthos 'Sunburst' Drought Tolerant?

Is Gleditsia triacanthos 'Sunburst' Drought tolerant?

As a young tree it requires regular watering, but once established ‘Sunburst’ develops excellent drought tolerance. It thrives in hot, dry and exposed locations, maintaining its vibrant golden foliage and open, airy canopy with minimal supplementary watering.

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How To Plant Your Gleditsia triacanthos 'Sunburst'

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 Gleditsia triacanthos 'Sunburst'

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.

Gleditsia triacanthos 'Sunburst' is expected to grow 30cm to 60cm per year.

Medium Growth Rate
Fast Growth Rate

Long Term Care For Your Gleditsia triacanthos 'Sunburst'

Watering: Water deeply twice weekly through the first 12 months. Once established, this is drought tolerant and only needs a deep soak during extended dry periods.

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 inspection in warm humid conditions is all that's needed.

Planting Your Gleditsia triacanthos 'Sunburst' in Different Soil

Gleditsia triacanthos performs best in free-draining loam or sandy loam with a neutral to slightly alkaline pH. Adaptable to a wide range of soils when drainage is sharp.

Sandy soil: Free-draining and ideal. Mulch lightly to moderate surface temperature.

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

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

pH: Neutral to slightly alkaline preferred. Avoid waterlogging at all times.

Frequently Asked Questions

Frequently Asked Questions (FAQs):

Q: What makes Gleditsia triacanthos 'Sunburst' unique among Honeylocust varieties?
A: 'Sunburst' stands out for its striking golden foliage, making it a standout choice for ornamental landscapes.

Q: How tall can a mature Sunburst Honeylocust grow?
A: At maturity, it typically reaches a height of 12-18 meters, making it a majestic addition to landscapes.

Q: Is Sunburst Honeylocust suitable for urban environments?
A: Yes, it is well-suited for urban settings, thanks to its tolerance of pollution and adaptable nature.