Hedge, Windbreak and Windrow Trimming for Wollondilly Properties

A shelter belt is infrastructure

Anyone who has stood in a paddock at Silverdale or The Oaks on a hot westerly day understands why the previous owner planted that row of pines. Wind coming off the ridges above Warragamba Dam strips soil moisture, knocks young stock about, tears at roofing and pushes dust through everything. A well-placed windbreak takes the edge off it for a distance of many times its own height. That is real, measurable value — the same reason windrows run along boundary after boundary from Razorback across to Appin.

Which is exactly why letting one go is a mistake. An unmanaged shelter belt does not simply get taller. It thins out at the bottom, funnels wind underneath instead of lifting it, drops limbs into the fence line and eventually starts sending stems over the boundary or the driveway.

What neglect actually does to a row

It goes bare at the base. Shade from the top kills the lower growth, and a windbreak with a gap under it is worse than useless — it accelerates the airflow through the gap. Once a conifer row has gone brown at the bottom it will not usually reshoot there, which is why regular light trimming beats an eventual hard cut.

It eats the fence. Stems thicken against wire and posts, roots lift the line, and a fence that was straight in 2010 is now a scallop. Sorting that out later costs more than the trimming would have.

It closes the sightline at the gate. This is the one worth acting on first. A hedge or row grown out over a rural driveway entrance turns a 100km/h road exit into a guess. Clearing the splay each side of the gate is a genuine safety job, not cosmetics.

It shades what you did not intend to shade. House windows, solar panels, the vegetable patch, a neighbour's living room. The last one is where disputes start.

It becomes fuel. A dense, dead-bottomed conifer row running right up to a shed or a house is continuous fuel. Managing that is practical work, covered alongside bushfire hazard reduction — noting that Asset Protection Zone rules and the 10/50 scheme are administered by the NSW Rural Fire Service, and you should check your own address on the RFS 10/50 tool rather than assume you are covered.

What is actually planted around here

The mix on rural blocks in this shire is fairly consistent, and the species dictates how it should be cut.

• Radiata pine rows. The classic old shelter belt on farms across the district. Pines do not reshoot from bare wood, so once a row has been cut back past the green it stays bare. Reduction has to be planned, and on tall old rows the honest answer is sometimes staged removal and replanting rather than trimming. Council's exemption list covers radiata pine under 20 metres, which is worth knowing before you plan anything.
• Cypress and conifer hedges — same rule about cutting into bare wood, same need for regular light work.
• Photinia, lilly pilly and viburnum around houses and driveways. These take hard pruning well and respond fast; they just need doing more often.
• Native windrows — casuarina, melaleuca, bottlebrush, tea-tree. Generally tolerant, and better for habitat than a conifer row.
• Self-sown invaders in the line. African Olive, privet and camphor laurel seedlings colonise an established windrow because it is exactly the sort of perch-and-drop corridor birds use. Left alone they become the row. Pulling them out is half the job on an old shelter belt.

The cutting itself, done properly

Taper the face. A hedge or row cut with a wider base than top lets light reach the lower growth and stays green all the way down. Cut with vertical or, worse, wider-at-the-top faces and the bottom dies. This is the single most common mistake on domestic hedges and it is not reversible on conifers.

Little and often beats a rescue cut. An annual or twice-yearly trim keeps a hedge inside its green shell. Waiting five years means the only way back to the intended size is a cut into old wood, and whether the plant survives that depends entirely on the species.

Match the tool to the material. A hedge trimmer is for soft growth. Once stems are pushing past secateur thickness the job stops being hedge trimming and becomes selective pruning — see tree lopping for crown work on larger material.

Work with the machinery access you have. Long boundary rows are usually cut from a platform or off a machine rather than a ladder, and that decides whether the crew can reach the whole line or only the accessible half. Gate widths, slope, overhead lines and soft ground after rain all come into it on acreage.

Deal with the arisings. A boundary row produces a surprising volume of fine material very quickly. On-site chipping or full cart-away is covered under mulching and green waste removal — and if the row is full of African Olive or privet, have it taken away rather than spread.

Boundaries, neighbours and the bit worth being careful about

Two things worth knowing before you start on a row near a fence:

1. You cannot cut a neighbour's plants without their agreement. Common-law rights around overhanging branches exist but are narrower than most people think, and acting unilaterally is how a hedge argument becomes a legal one.
2. NSW has a specific hedge law. The Trees (Disputes Between Neighbours) Act 2006 deals with trees causing damage or risk, and includes provisions for high hedges — broadly, two or more trees planted so as to form a hedge, rising 2.5 metres or more, that severely obstruct sunlight to a window or a view from a dwelling. Applications go to the NSW Land and Environment Court, not to Council. Wollondilly Shire Council publishes guidance on trees on neighbouring properties, and you should take your own legal advice before going down that road.

A conversation over the fence and a shared trimming cost resolves the great majority of these. It is worth trying first.

Getting it booked

Ask for the cut height and the finished face profile to be written into the quote, along with whether the arisings stay or go. That is what prevents disagreement afterwards. We ask the crews we connect you with to carry public liability cover — ask to see the certificate before work starts. How the referral arrangement works is set out in our disclaimer.

Related work: acreage and land clearing where a whole row is coming out, stump grinding to clear a line for new fencing, and storm damage response when a windbreak has come down across it.

Trimming is available across Picton, Tahmoor, Thirlmere, Bargo, Wilton, Menangle, Silverdale, Warragamba, The Oaks and the rest of the shire — see areas serviced, or head back to the home page.

Call (02) 4601 3180 and we will connect you with a local crew to look at the row, the sightlines and the fence line, and give you a written price.