The most exposed patch we cover
Secret Harbour is a late-1990s onward coastal estate built on dune sand, two streets from an open ocean beach and with almost nothing between the houses and the weather. Everything about the tree work here follows from that.
The sea breeze. Strong, reliable and salt laden every summer afternoon, coming straight off the ocean. Trees lean inland, carry burn on the seaward side, and grow thin on that flank.
The sand. Deep, pale coastal dune sand with minimal organic matter and very little capacity to hold water or nutrient. Trees here are working with less than they would be on the Bassendean sand inland at Baldivis.
No established canopy. Because the suburb is young, there is no mature tree layer to slow the wind. Each tree stands on its own, and the ones planted in exposed corners never quite get going.
What survives
The coastal natives that were here before the estate: WA peppermint, coastal wattle, dune banksia, and the hardier melaleucas. Among planted species, Norfolk Island pine, olive and the tougher coastal exotics cope.
What does not survive is anything from a sheltered or wetter climate, regardless of how much reticulation is pointed at it. A large proportion of the removal work here is trees that were never going to make it in the position.
The work that comes up
Formative pruning on young trees. The most valuable thing you can do in a suburb this age. Establishing a single dominant leader and well-spaced scaffold limbs in the first five years prevents the split union that fails at twenty. Detail on the pruning page.
Staking correction. Ties left on too long are endemic in new estates. A trunk that has never moved never develops taper, and the tree leans the day the stake comes out.
Removals of failed plantings. Small, quick, and usually a straightforward stump grind afterwards — the sand here is about as easy as ground work gets.
Storm clean-up. Winter fronts hit this coast without anything in the way.
Dune reserve, and where the fence line is not the boundary
The coastal dune reserve behind many rear fences is not private land, and the vegetation on it is doing structural work holding the dune in place. Clearing it or cutting it back is a matter for the City of Rockingham, not for the adjoining owner, and the erosion consequences on this stretch of coast are not theoretical. Street and verge trees are council property too, as they are everywhere in the state.
Access and ground work
Estate streets, small lots, courtyard gardens and 900mm side gates. A narrow-access grinder handles most of it. Stump work in dune sand is fast, though backfill settles noticeably, so leave it proud.
Nearby
Rockingham north, Baldivis inland, Mandurah south. See the service areas page and the cost guide.
Call (08) 9516 2804.
Frequently asked questions
Which council covers Secret Harbour?
The City of Rockingham, which also covers Golden Bay and Singleton immediately south. Western Australia has no statewide tree preservation order, so private tree rules are the City's own. Coastal dune vegetation and foreshore reserves are managed separately and are not private property, whatever the fence line suggests.
Why do trees here struggle?
Salt, wind and sand. The estates sit on coastal dune sand with almost no organic matter and very little water-holding capacity, two streets from an open ocean beach, with no established canopy to break the sea breeze. Anything not genuinely salt tolerant burns on the seaward side and stays stunted.
What actually grows well in Secret Harbour?
The coastal natives that were here first — WA peppermint, coastal wattle, dune banksia and the hardier melaleucas. Among planted species, Norfolk Island pine, olive and the tougher coastal exotics manage. Anything from a wetter, sheltered climate will look permanently unhappy no matter how much water it gets.
Can I clear the dune vegetation behind my fence?
No. Coastal dune reserve is not private land even where it adjoins a back fence, and the vegetation on it is holding the dune together. Clearing it is a matter for the City, and the erosion consequences are real on this stretch of coast. If a branch is genuinely over the fence line, contact the City rather than cutting.