Top 5 Invasive Tree Species You Should Remove in Wollongong

Invasive trees can spread beyond garden boundaries, displace native vegetation and create ongoing maintenance problems. In Wollongong, gardens adjoining https://travisddny076.greyhavendaily.com/posts/professional-tree-surgery-vs-diy-removal-key-factors creeks, bushland and the Illawarra escarpment can become seed sources for infestations in nearby natural areas.

The following five introduced trees deserve particular attention. Confirm the species and check removal requirements before cutting anything down. Some weeds resemble desirable garden plants or native trees, and removal methods vary considerably.

Five Invasive Trees to Prioritise

1. Camphor Laurel

Cinnamomum camphora is a large evergreen tree with glossy leaves that release a distinctive camphor smell when crushed. Birds eat its small, dark fruits and disperse the seeds into gardens, waterways and bushland.

Camphor laurel develops a broad canopy and can compete with native vegetation. Mature specimens also require careful assessment where branches extend over buildings, fences or accessways.

What to do: Remove seedlings while they are small, extracting the roots where practical. For established trees, arrange professional assessment and a treatment plan: simply cutting the trunk can result in vigorous regrowth.

2. Broad-leaf Privet

Ligustrum lucidum is an evergreen tree recognised by its large, glossy leaves, clusters of small white flowers and blue-black berries. It commonly establishes in moist, sheltered places, including creek corridors and disturbed bushland.

Bird-dispersed seeds allow broad-leaf privet to spread well beyond the original planting. Dense growth shades out native plants and reduces opportunities for natural regeneration.

What to do: Prioritise seedlings and young trees before they produce berries. Large trees generally need staged dismantling and appropriate stump treatment. Avoid dropping fruiting branches into neighbouring vegetation.

3. Small-leaf Privet

Ligustrum sinense grows as a large shrub or small tree. It has smaller leaves than broad-leaf privet and produces clusters of white flowers followed by dark berries.

It can form dense thickets in gullies and along waterways, restricting access and suppressing native understorey plants. Established infestations usually contain seedlings of different ages, so removing the largest plants alone rarely solves the problem.

What to do: Remove small plants with their roots where soil conditions allow. Treat established stems using a suitable, label-compliant method, then inspect the area regularly for seedlings and reshooting plants.

4. African Olive

Olea europaea subsp. cuspidata is an invasive evergreen shrub or tree with narrow leaves and small fruits that darken as they ripen. Its seeds spread through fruit-eating birds and other animals.

African olive can develop dense stands that compete with native vegetation. Because it resembles cultivated olives, correct identification is especially important before arranging removal.

What to do: Have uncertain specimens identified by a qualified arborist or weeds officer. Hand-pull small seedlings where feasible; larger plants require an approach that controls the root system and limits regrowth.

5. Coral Tree

Erythrina × sykesii is a spreading tree with leaves divided into three leaflets and conspicuous red flowers. It can establish from discarded branches and other vegetative material, making careless disposal a significant spread risk.

Its brittle branches can also create hazards around paths, buildings and frequently used outdoor areas. Mature trees need careful planning rather than improvised pruning or felling.

What to do: Use a qualified arborist for large specimens. Keep cut material out of creeks and bushland, and confirm an appropriate disposal pathway so branches cannot take root elsewhere. Monitor the stump and surrounding ground for regrowth.

Check Wollongong Tree Removal Requirements First

Being invasive does not automatically mean a tree can be removed without approval. Before starting work in 2026, check Wollongong City Council’s current tree management requirements and any relevant weed exemptions. Heritage controls, protected vegetation, land ownership and the location of the tree may affect what is permitted.

For weed identification and local control advice, contact Council or consult NSW WeedWise. A plant’s weed status and management requirements can differ between regions; do not assume that advice for another part of NSW applies in Wollongong.

Make Removal Effective and Protect Your Property

• Assess safety: Keep DIY work to small plants that can be removed safely from ground level. Use professionals near structures, steep slopes and powerlines.
• Prevent regrowth: Match treatment to the species. Use herbicides only where permitted and strictly according to the product label or applicable permit, particularly near waterways.
• Protect wildlife and soil: Check for occupied nests, hollows and erosion risks before clearing established vegetation.
• Plan follow-up: Inspect after rain and through subsequent growing seasons. Seeds already in the soil and seeds arriving from nearby properties can produce new plants.

Replace Invasive Trees With Suitable Local Natives

Removal delivers greater long-term value when followed by appropriate replacement planting. Choose locally indigenous species suited to your soil, coastal exposure, available space and distance from buildings or services. Local native nurseries and Council resources can help you select suitable plants.

For established invasive trees, request an assessment from a qualified, insured arborist servicing Wollongong. A sound plan covers identification, approvals, safe removal, disposal and follow-up—not just cutting down the tree.

Wollongong Tree Removal Pros

106 Gipps St, Wollongong NSW 2500

(02) 4210 5945