Tree work07884 274693Training01772 369694
Left unmanaged, invasive plants outcompete native vegetation, damage structures and increase health or environmental risks. Great Oaks delivers practical invasive species removal that fits site constraints, seasons and budgets, with clear records to keep client files and inspections straightforward.
Our plans are timed to growth and flowering cycles, and every visit is recorded with short notes and photos so your files and inspections stay simple.
1) Assess
Confirm species and extent, map constraints, set safe access and agree the control strategy and timing.
2) Contain
Stop spread while the main programme is prepared, using pre-flowering cuts, arisings control, tool hygiene and signage where needed.
3) Eradicate
Apply the agreed methods for the species and setting, with competent herbicide use where appropriate or mechanical/hand removal where preferred.
4) Restore
Replant or allow natural regeneration where feasible, lock gains with simple aftercare, and monitor regrowth with short photo notes.
| Species / issue | Typical setting | Best window | Method | Outcome |
|---|---|---|---|---|
| Himalayan balsam | Rivers, ditches, parks, estates | April to July, pre-seed | Hand pulling, cut and collect, supervised volunteer days | Fewer seed heads and safer banksides |
| Japanese knotweed* | Development plots, boundaries, rail, watercourses | Growing season with planned follow up | Herbicide programme or excavation with controls | Risk managed and documented for planning or sale |
| Giant hogweed* | Riparian corridors, disturbed ground | Early spring to pre-flower | Controlled herbicide, cut and collect with PPE | Public safety improved and regrowth reduced |
| Rhododendron ponticum | Woodlands, estates, banks | Autumn to spring | Cut stump, stem injection, phased clearance | Space for native regeneration |
| Cherry laurel and snowberry | Gardens, estates, boundaries | Year round | Mechanical removal, targeted herbicide where needed | Cleared areas for replanting |
| General invasives or harmful weeds | Mixed sites | As assessed | Integrated plan combining removal, treatment and monitoring | Compliance with site rules and cleaner audits |
* Additional safety and handling controls apply. We brief methods and provide documentation before starting.
Use this quick checklist before works start:
Hollow stems, exploding seed pods or dense monocultures near water
Sharp phototoxic bristles or sap contact risk to the public
Rhizomes that re-shoot after cutting
Stands encroaching foundations, boundaries or services
Arisings being moved between areas without controls
If you tick any of these, a seasonal programme is the safe route.
Confirm species and extent with simple mapping
Set biosecurity measures to stop spread between areas and sites
Phase works to the plant’s cycle for the best effect
Use hand removal, mechanical clearance and qualified herbicide where appropriate
Excavate and handle waste correctly with the right codes and paperwork
Return for planned follow ups to hit regrowth windows
Restore with native mixes and a short, workable aftercare plan
Get in touch with Great Oaks today. We’re happy to answer any questions relating to arboriculture or grounds maintenance, or provide further info about our chainsaw courses.
A typical single growing season for a riparian site.
Week 1 to 2
Survey, mapping, method statement, biosecurity plan and access arrangements.
Month 1
Initial control visit. Remove or treat priority stands, isolate arisings, clean tools before leaving site.
Month 2 to 4
Follow up visits to capture regrowth or late germination. Short photo notes after each visit.
Month 5 to 6
End of season review with map updates and next season recommendations. Optional replanting if agreed.
Estate path network
Volunteer balsam pulls supported by our supervisors. Two sweeps pre-seed led to clear banksides the following year.
Plot boundary near services
Knotweed stand managed through a two-year herbicide programme with records suitable for sale.
Woodland edge
Rhododendron removal with cut stump treatment in phases, followed by native understorey planting.
Arboricultural Association Approved Contractor
Constructionline Gold, Once For All SSIP, ROSPA
Operatives NPTC qualified and insured
Biosecurity briefings and clean-down procedures on every visit
Based in Preston, we cover Lancashire, Greater Manchester, Merseyside, Cumbria and nearby areas. Typical locations include Preston, South Ribble, Chorley, Leyland, Lancaster, Blackburn, Blackpool, Fylde, Wyre and West Lancashire. Close by but not listed here? Ask and we will confirm availability.
Do you offer herbicide-free options?
Yes. For suitable species and settings we prioritise hand removal and mechanical methods, using herbicide only where it is the most effective choice.
Can you run and supervise volunteer days for balsam?
Yes. We brief safe methods, provide PPE guidance and disposal plans, and supervise to keep effort focused.
What happens to the waste?
We follow species rules. Some arisings can compost on site away from water. Others require controlled movement and licensed disposal. Paperwork is provided.
Will you replant after clearance?
If required, we supply and plant native mixes with guards and establishment watering, plus a simple aftercare plan.
How long will it take?
Expect at least one growing season with planned follow ups. Share your dates and targets and we will set a realistic schedule.
Call 07884 274693 or email office@greatoakstreeservices.co.uk to plan invasive species removal that protects people, property and habitats. Our accreditations and method statements can be supplied with your quote.
Careers
Climbing, grounds maintenance and utility work.Climbing, grounds and utility work.
Arboricultural Association Approved Contractor.
Last minuteAvailability
Starts Monday 19 October 2026
3 days plus 1 for assessment
£9671 place
Entry requirements: Ground Based Chainsaw Operator and Tree Climbing and Aerial Rescue
Book this date, Using a Chainsaw from a Rope and HarnessOr call the training office on 01772 369694
