Hedge Trimming on the North Shore

Hedges do a lot of work in North Shore gardens, from formal box edging to tall boundary screens. They also grow fast in Sydney's warm, humid climate, so a hedge that isn't trimmed regularly soon looks shaggy, thins at the base or outgrows its spot.

The short version: most Sydney hedges need trimming two to four times a year, with fast formal hedges trimmed more often through the spring and summer flush. Shape every hedge slightly wider at the base than the top so light reaches the lower leaves. Professional hedge trimming starts from $120 per hedge or job, depending on size and access.

The Best Hedge Plants for Sydney

Lilly pilly (Syzygium)

One of the most popular hedges on the North Shore: native, dense, quick-growing and tolerant of hard cutting. Its weakness is lilly pilly psyllid, a sap-sucking insect that leaves new leaves pimpled and distorted, so choose a psyllid-resistant variety when planting; Syzygium australe selections such as 'Resilience' are a safer bet than older, susceptible types. Trim as the spring and summer flush of new growth starts to firm. Formal lilly pilly hedges typically need three or four trims a year.

Murraya

A Sydney classic with glossy leaves and fragrant white flowers that grows quickly in warm weather and takes regular cutting well. Trim lightly after each main flowering if you want flowers, or more often for a sharp formal line.

Viburnum

Sweet viburnum (Viburnum odoratissimum) makes a fast, broad privacy screen. Its large leaves show every cut, so careful work with sharp blades matters. Two or three trims a year usually keeps it in shape.

Buxus (box)

The formal choice for low hedges, edging and topiary. It's slow-growing, so it needs less frequent cutting but rewards precise work. Japanese box generally copes with Sydney's heat and humidity better than English box. Avoid trimming during heatwaves, when freshly exposed leaves can scorch.

Westringia for coastal spots

For exposed, salty sites near the harbour or ocean, coastal rosemary (Westringia fruticosa) is hard to beat. Trim lightly and often: westringia doesn't reliably reshoot from old, bare wood.

Other reliable choices

Pittosporum: fast, dense screening; regular trims stop it getting leggy.
Photinia: prized for red new growth, but prone to leaf spot in humid weather.
Camellia sasanqua: a flowering hedge; trim after flowering, usually in late winter.

How Often to Trim Through Sydney's Seasons

Sydney hedges rarely stop growing completely, but growth swings a lot through the year.

Spring (September to November): the main flush begins. Give hedges a shaping trim once new growth starts to firm, then feed and mulch.
Summer (December to February): peak growth. Fast formal hedges such as murraya may need trimming every six to eight weeks. Trim early in the day, water well in dry spells and avoid heavy cuts in heatwaves.
Autumn (March to May): a final tidy so regrowth can harden before the cooler months.
Winter (June to August): growth slows right down. Late winter is the time to start renovating overgrown hedges.

Building trimming into a regular maintenance schedule is the easiest way to keep hedges sharp.

Shaping Technique: Keep the Base Wider Than the Top

The most common mistake we see is a hedge that's wider at the top than the bottom. The top shades the lower branches, the base thins and goes bare, and you end up with a hedge on stilts. A slight taper, called a batter, keeps the whole face in the light.

Trim the sides first, working from the bottom up, then the top.
Use a string line for long, straight tops.
Keep blades sharp and clean so cuts are crisp rather than torn.

Renovating an Overgrown Hedge

An overgrown hedge can usually be brought back, but in stages rather than one hard cut. Lilly pilly, murraya and viburnum generally tolerate hard renovation. Westringia and many conifers don't regrow from bare wood, so they may need gradual reshaping or replacement.

Start in late winter or early spring, just before the growth flush.
Reduce the height and one side first, then the other side the following season.
Feed, water and mulch afterwards to support regrowth.
Expect it to look thin for a while before it fills back in.

Pests and Problems to Watch For

Lilly pilly psyllid: pimpled, distorted new leaves; trim off affected growth.
Scale and sooty mould: black, sooty leaves usually mean sap-sucking scale insects.
Fungal leaf spot: common on photinia and box in humid, crowded conditions.
Bare bases: usually a shape problem or too much shade.
Sudden dieback: can point to root problems in poorly drained soil.
Possums: they love fresh new growth.

Height, Boundaries and Neighbours

A few general points:

Talk to your neighbour before a major height reduction or trimming their side.
Some councils' tree-protection rules can apply to tall screening plants, depending on species and size, so check with council before a major reduction or removal.
In NSW, the Trees (Disputes Between Neighbours) Act 2006 lets neighbours apply to the Land and Environment Court about tall hedges that severely block sunlight to windows or views from a dwelling. It's a last resort.
In strata buildings, hedges on common property are generally the owners corporation's responsibility, so go through the strata manager.

If a "hedge" has become a row of mature trees needing removal or major reduction, that's a job for a qualified arborist. We're gardeners and landscapers, not arborists, and we'll tell you when you need one.

Hedge Care Across the North Shore

Each part of the North Shore brings different challenges:

Hedge trimming in Mosman: harbourside gardens often pair formal box with salt-tolerant screens.
Hedging in Neutral Bay and Cremorne: compact terraces and narrow side paths mean tight access.
Hedge maintenance in Roseville: larger blocks often mean long, tall boundary hedges.
Hedge pruning in Artarmon and Lane Cove: leafy gardens with mature screens.

What Does Hedge Trimming Cost in Sydney?

Our hedge trimming starts from $120 per hedge or job. Larger jobs are priced on time, at about $75 per gardener per hour. What moves the price:

Height and length: hedges above head height need platforms and safe work methods.
Condition: an overgrown hedge takes far longer than one on a regular cycle.
Access: steep blocks and narrow side paths add time.
Green waste: heavy cuts mean more to remove.

Regular maintenance is $150 per hour for a two-person team, and keeping hedges in that cycle is usually better value than paying for an overgrown rescue later.

DIY or Professional?

DIY is fine for a low, short hedge you can reach from the ground and trim little and often. Call a professional when:

The hedge is above head height or on a slope, where ladder work with powered trimmers gets genuinely risky.
It's long, overgrown or needs renovating.
You're seeing pests, dieback or bare patches you can't explain.

Our teams are 100% in-house, licensed and qualified in landscaping and horticulture, with 10+ years' experience and $20M public liability insurance. For hedge trimming services across the North Shore, call 0481 057 426 or book a free on-site hedge trimming quote.

Frequently Asked Questions

How often should hedges be trimmed in Sydney?

Most hedges need two to four trims a year. Fast-growing formal hedges such as murraya may need trimming every six to eight weeks through the spring and summer flush, easing off over winter. Slow growers like box need less.

What is the best hedge plant for the North Shore?

Lilly pilly is a popular all-rounder, as long as you choose a psyllid-resistant variety. Murraya and viburnum suit fast screens, box suits low formal hedges and westringia suits coastal spots.

How much does hedge trimming cost in Sydney?

Our hedge trimming starts from $120 per hedge or job, with larger jobs priced on time at about $75 per gardener per hour. Height, length, condition, access and green waste all affect the price, and on-site quotes are free.

Can an overgrown hedge be saved?

Usually, if it's a species that reshoots from old wood, such as lilly pilly, murraya or viburnum. Renovate in stages from late winter, then feed and water. Westringia and many conifers don't recover from hard cuts.

Hedge Trimming North Shore: Best Plants, Timing & Cost