Leylandii trimming and removal

Whether you need a routine annual trim to keep the "green wall" in check or a full removal to reclaim your sunlight, hiring a professional ensures the job is done safely. Professional gardeners and arborists have the specialist long-reach equipment and waste disposal capabilities to handle these dense, heavy conifers effectively.

What Does the Work Involve?

• Site Assessment: Checking the health of the hedge, identifying boundary lines, and scanning for nesting birds or obstacles like power lines.
• Access Setup: Deploying safe working platforms, tripod ladders, or cherry pickers for tall specimens.
• Trimming & Shaping: Cutting back the current season's growth on the top and sides to maintain a neat, box-like profile.
• Sectional Felling: For removals, the tree is dismantled from the top down in manageable sections to protect the surrounding garden.
• Processing Waste: Feeding branches through a woodchipper to reduce volume and loading heavy timber for removal.
• Stump Management: Either cutting the trunk flush to the ground or using a stump grinder to remove the root ball entirely.

Typical Costs

Prices for Leylandii work vary significantly based on the height of the hedge and how much green waste needs to be removed. Removing a mature Leylandii is often more expensive than other trees due to the sheer density of the foliage and the volume of "arisings" (waste).

Cost Factors: Waste disposal is a major factor; a large Leylandii can produce enough foliage to fill several skips. Access also plays a role—if the gardener has to carry waste through a house or up stairs, labour costs will increase.

How Long Does It Take?

• Routine Trim (10-15m length): 3 to 5 hours for a two-person team.
• Heavy Reduction (Topping 2m+ off): 1 full day including waste processing.
• Single Tree Removal: 4 to 6 hours depending on size and proximity to buildings.
• Removal of a Mature Row (5-10 trees): 2 to 3 days including stump grinding and site clearance.

DIY or Professional?

Trimming a low Leylandii hedge (under 2 metres) is a manageable DIY task for a confident gardener with a quality petrol or cordless hedge trimmer. However, once the hedge exceeds 3 metres, the risks increase exponentially. Working at height with vibrating power tools is a leading cause of domestic garden accidents.

Expert Tip: Unlike many other conifers, Leylandii will not regrow from "old wood." If you DIY and cut back past the green needles into the brown interior, you will be left with permanent brown patches.

For removals, a professional is essential. Chainsaw work, particularly at height, requires NPTC certification and specific insurance that standard home policies do not cover. Professionals also have the "Waste Carriers Licence" required to legally transport and dispose of the massive amount of debris generated.

Choosing the Right Tradesperson

• Verify Insurance: Ensure they have Public Liability insurance (minimum £2m, though £5m is preferred for tree work).
• Check Qualifications: Look for NPTC or LANTRA certifications for chainsaw use and aerial tree work.
• Waste Logistics: Ask specifically if waste removal and "chipping" are included in the quote or charged as an extra.
• Equipment: Ask what access equipment they use; avoid anyone planning to balance a standard ladder against a soft hedge.

Questions to ask:

• "Are you a registered waste carrier with the Environment Agency?"
• "How do you handle the 'brown wood' issue to ensure the hedge stays green?"
• "Is there a discount if I keep the woodchips for my own garden borders?"
• "Can you provide a written quote rather than an estimate?"

UK Regulations

• The High Hedges Act: Under Part 8 of the Anti-social Behaviour Act 2003, local authorities can intervene if a hedge (usually over 2m) interferes with a neighbour's "reasonable enjoyment" of their property.
• Wildlife & Countryside Act 1981: It is an offence to damage or destroy the nest of any wild bird while it is in use or being built. Trimming should generally be avoided between March and August.
• TPOs and Conservation Areas: Always check with your local planning office before removing a large Leylandii, as it may be protected by a Tree Preservation Order.
• Waste Duty of Care: You are legally responsible for ensuring your garden waste is disposed of by a licensed carrier.

Common Problems

• The "Brown Patch" Trap: Cutting too deep into the hedge. Once you hit the brown, dead centre, it will never turn green again.
• Cypress Aphid: These pests cause browning patches in late summer. A professional can identify if your hedge needs treatment rather than just a trim.
• Neighbour Disputes: Reducing the height of a shared hedge without written consent can lead to legal action or "criminal damage" claims.
• Stump Regrowth: While Leylandii rarely regrows from a stump, the remaining root ball is massive and can take decades to rot, often causing "honey fungus" which can kill other garden plants.

Frequently Asked Questions

When is the best time of year to trim Leylandii?

Late spring or early autumn is ideal. Avoid the peak of summer to prevent "scorch" and never trim during the bird nesting season (March to August) unless you have thoroughly inspected the hedge for active nests.

How far back can I cut my Leylandii hedge?

You can only cut back as far as the green growth. If you cut into the brown, woody interior, the hedge will not recover. For height, you can be more aggressive, but it is best to reduce height in stages over two seasons if the reduction is more than 30%.

Will a gardener remove the waste?

Most professional gardeners will include waste removal in their quote. They will usually use a woodchipper to process the branches on-site, which makes transport more efficient. Always confirm this is included to avoid being left with a massive pile of brushwood.

Can I force my neighbour to cut their tall Leylandii?

Under the High Hedges Act, if the hedge is made of two or more evergreens and is over 2 metres tall, you can complain to the council. You must show you have tried to resolve it amicably first, and there is usually a fee (often £300-£600) to lodge the complaint.

Do I need a permit to remove a Leylandii tree?

Only if the tree is covered by a Tree Preservation Order (TPO) or if you live in a Conservation Area. Leylandii are rarely given TPOs because they are considered a "nuisance" species, but it is always worth checking with your local council first.