Tree Pruning for Salt-Exposed Shellharbour Gardens

The wind has already pruned it, and it did a bad job

Stand at Bass Point Reserve or on the headland at Barrack Point on a solid south-easterly and you can see exactly what the weather does to trees here. Crowns burn off on the windward side and pile weight on the leeward side. Salt scorches new growth. The Norfolk Island pines along the Shellharbour Village and Warilla foreshore lean like they have been combed, and the banksias behind the dunes go one-sided.

The result on a suburban block is a tree carrying all its weight out over one boundary — often the neighbour's, often the pool — with a lot of dead, brittle material still sitting up in the crown waiting for the next blow.

That is what pruning is for around here. Not tidiness. Load and deadwood.

The standard the work is cut to

Pruning is not just cutting bits off. Where a cut lands decides whether the tree seals it or rots from it.

AS 4373 (Pruning of Amenity Trees) is the Australian Standard. It defines the pruning types, tells you where the cut belongs relative to the branch collar, and rules out practices that damage trees — including topping and traditional "lopping", which strips a crown back to stubs and produces weakly attached regrowth that fails in exactly the wind we get here.

Shellharbour City Council's tree FAQ states that one of the conditions of approval is that pruning works are carried out by a qualified arborist in line with the Australian Standard (Shellharbour City Council). Worth knowing before you accept the cheapest quote on the street.

The five pruning jobs we get called for

Deadwooding. Removing dead branches from a live crown. The single most useful thing you can do before storm season, because most "the tree exploded" calls turn out to be deadwood that had been sitting there since autumn. Council's guidance also lists deadwood removal from non-threatened, non-heritage species as generally not requiring an application — one of the few jobs you can usually just book.

Crown thinning. Selective removal of a portion of the smaller live branches through the crown, so wind passes through the tree rather than pushing on it. This is the useful answer for a big coastal tree acting like a sail. Done properly it does not change the tree's shape — it just makes it less of a lever in a gust.

Crown lifting. Taking the lowest branches off to get clearance over a driveway, a carport, a footpath or a shed roof.

Clearance and selective reduction. Getting a crown off a roof, out of a gutter, off a solar array, or back from a service line. Where the whole tree needs to come down in height and weight rather than just be cleared, that is a different job — see tree lopping for how reduction is done properly.

Formative pruning. On the young trees through the newer estates at Shell Cove, Flinders and Tullimbar. Twenty minutes of structural pruning on a five-year-old tree prevents the co-dominant fork that splits it in half at twenty-five years. It is the cheapest tree work you will ever buy.

Species notes for this stretch of coast

• Norfolk Island pine — sheds heavy, brittle branchlets and cones from real height. It responds badly to hard reduction, so the honest work is deadwooding and clearance, not reshaping.
• Coastal banksia — old specimens carry a lot of dead material and split at tight forks. Thin the weight off a compromised fork rather than waiting for it to open.
• Port Jackson fig — vigorous, and it will regrow whatever you cut. Manage weight and clearance, do not try to keep it small.
• Camphor laurel — regrows aggressively from any cut, with weak attachments. Pruning is generally a holding action; on most blocks removal is the honest recommendation.
• Blackbutt, swamp mahogany and forest red gum — the reserve-edge natives around Blackbutt and the Albion Park fringe. Big limb-drop risk, and hollows in older specimens, which Council assesses regardless of size. Get advice before booking anything substantial.
• Lilly pilly and tuckeroo screens — the standard estate hedge species. They cope well with regular trimming; see hedge trimming.
• Cocos and other palms — never "pruned" into a hurricane cut. Dead fronds and seed heads come off, live fronds stay. Full removals are covered under palm removal.

The bit that catches people: the fence line

Half the pruning enquiries on tight Shellharbour blocks involve a boundary, so it is worth being clear.

Shellharbour City Council requires a Vegetation Removal Application to prune limbs of a declared tree that extend across a property boundary, and the neighbouring owner's signed consent forms part of that application. Council is also explicit that any approval it gives does not allow you or a contractor to enter your neighbour's land without their permission (Shellharbour City Council).

Council does not referee neighbour disputes either — its position is that neighbours should discuss it, and it points people to Law Access NSW on 1300 888 529 if they cannot agree.

In practice, the smoothest version of this is nearly always a knock on the door before an application. Most people say yes to a tidy, properly cut job on their tree at somebody else's expense.

Timing, and what not to do

Late autumn to winter is the window for most of it — the weight comes out before the storm season and the tree is less active. Prune flowering species after they flower. Deadwood and anything hazardous gets dealt with whenever you find it.

Two things not to do. Do not accept a quote to "top" a tree, and do not prune to the point where a crown is stripped bare — a tree that loses too much foliage at once responds with a mass of weak, fast regrowth that is more dangerous than what you started with. And do not do it off a ladder with a hedge trimmer above head height. Falls from height are how most DIY tree injuries happen.

Book the deadwood before the southerly does

If you only do one thing to a big tree this year, take the dead out of it. It is the cheapest work on the list and it removes most of what would otherwise end up on your roof.

We ask the crews we work with to carry their own public liability cover — ask to see the certificate of currency before work starts, since as a referral service we do not verify it on your behalf. Suburb coverage is on the Suburbs We Service page, and the rest of what we do is on the home page.

Call (02) 4214 4566 for a free, no-obligation on-site quote.