Buy Ligustrum Privet Hedge Plants for Australian Gardens

Ligustrum — commonly known as privet — is one of the most useful and versatile hedging genera available to Australian gardeners. With fast growth, glossy evergreen foliage, good drought tolerance once established, excellent frost hardiness, and the ability to be clipped to virtually any formal shape, privet has been a staple of Australian gardens for generations. However, not all privet species are equal — and choosing the right one for your situation is critical.

Our range includes Ligustrum undulatum (Box Leaf Privet) — a non-invasive, sterile species that is safe and recommended for use throughout Australia — and Ligustrum vulgare (Common Privet / European Privet). Please read the important species information below before purchasing.

Understanding Ligustrum — A Genus With a Complicated Reputation

Ligustrum is a genus of approximately 40–50 species of evergreen and deciduous shrubs and small trees in the Oleaceae (olive) family, native to Europe, North Africa, and Asia. The name Ligustrum is derived from the Latin ligare, meaning 'to bind', referring to the plant's historical use in basket-weaving and binding. Common privet (Ligustrum vulgare) is one of the few Ligustrum species native to Europe, and its use as a garden hedge plant dates back to the gardens of Elizabethan England.

Ligustrum's reputation in Australia is complex — and understandably so. Several privet species, particularly Ligustrum lucidum (Broad-leaf Privet), Ligustrum sinense (Chinese Privet), and Ligustrum vulgare (European Privet), have become significant environmental weeds in eastern Australia, spreading from garden plantings into bushland via bird-dispersed seeds and displacing native vegetation. This has rightly given the privet genus a cautious reputation among environmentally aware Australian gardeners.

However, Ligustrum undulatum (Box Leaf Privet) is an exception. This species is sterile — it does not produce viable berries and cannot spread into bushland. It is recognised as non-invasive and is listed as safe for use throughout Australia by nursery and horticultural authorities. For gardeners seeking a fast-growing, formal, low-maintenance hedge, Box Leaf Privet is an outstanding choice.

The key message: not all privets are the same. Species selection matters enormously with Ligustrum, both for garden performance and for environmental responsibility.

Why Box Leaf Privet (Ligustrum undulatum) Stands Out

The Best Alternative to English Box in Australia

For decades, Buxus sempervirens (English Box) was the gold standard for formal hedging in Australian gardens — clipping beautifully to crisp geometric shapes, holding form through multiple trims per year, and providing dense, evergreen structure. However, Buxus box blight (Calonectria pseudonaviculata), a devastating fungal disease now present in many Australian states, has made Box hedging increasingly risky in humid or poorly ventilated positions.

Ligustrum undulatum has emerged as one of the most practical and visually similar alternatives to English Box for Australian conditions. Its small, glossy, wavy-edged leaves produce a hedge with similar visual density and formality to a Box hedge, while growing significantly faster (typically 50cm to 1m per year under ideal conditions), tolerating more shade, withstanding frost, and showing no susceptibility to the fungal diseases affecting Buxus.

Unlike English Box, which can take 5–7 years to form a mature hedge from small plants, Box Leaf Privet can achieve a dense, well-formed hedge within 1–2 seasons — making it an outstanding choice for new gardens or garden renovations where established hedging is wanted quickly.

Exceptional Versatility and Adaptability

Ligustrum undulatum is one of the most adaptable hedging plants available in Australia. It tolerates:

•    Full sun to part shade — one of the few hedging plants that performs well in shaded positions alongside buildings, fences, and under tree canopies.

•    Frost — fully frost hardy across all Australian temperate climates including Canberra, Melbourne, and highland areas of Victoria and NSW.

•    Drought once established — withstands extended dry periods after the establishment phase, suitable for low-maintenance and water-wise gardens.

•    Pollution and urban conditions — frequently used in streetscapes, road verges, and commercial landscaping for its tolerance of pollution and compacted urban soils.

•    A wide range of soil types — from sandy coastal soils to heavy clays (with improved drainage).

•    Shade — will grow in quite dense shade where many other hedging plants fail, though flowering will be reduced and growth slightly slower.

Fast-Forming, Long-Lived, and Easy to Maintain

Box Leaf Privet is a genuinely long-lived hedging plant. Established hedges in Australian gardens are known to perform reliably for 20–30 years or more with regular maintenance. Once established, maintenance requirements are straightforward: clip two to three times per year to maintain shape, apply a slow-release complete fertiliser in spring and autumn, and water during extended dry periods. The plant responds excellently to hard pruning if a hedge has become overgrown — unlike some hedging plants, Box Leaf Privet can be cut back substantially and will reshoot vigorously from old wood.

Safety Information — Ligustrum Toxicity

All Ligustrum species contain compounds that are toxic to humans and animals. It is important that gardeners are aware of these risks before purchasing.

Berry and leaf toxicity: All Ligustrum species — including Ligustrum undulatum when it occasionally produces berries — contain terpenoid glycosides and other compounds in their berries and leaves. Ingestion of berries causes nausea, abdominal pain, vomiting, diarrhoea, headache, weakness, and in severe cases low blood pressure and lowered body temperature. Symptoms in children can be more severe due to lower body weight. If a child or pet has ingested privet berries, contact the Poisons Information Centre (13 11 26 in Australia) or your veterinarian immediately.

Pollen and flower allergenicity: Ligustrum vulgare and other privet species are documented causes of seasonal allergic reactions in Australia. The flower pollen causes allergic rhinitis, asthma, and respiratory irritation in sensitive individuals. Cross-reactivity with grass pollen is documented. If you or any household member has grass pollen allergies or asthma, consider whether planting privet (particularly L. vulgare) in a frequently visited garden position is appropriate.

Skin irritation: The leaves and sap of some Ligustrum species can cause contact dermatitis and eye irritation. Wear gloves when pruning and avoid touching your face during hedge maintenance. Wash hands thoroughly after handling cut material.

Pet safety: Privet berries and leaves are toxic to dogs, cats, and horses. The Queensland Poisons Information Centre documents Ligustrum as a plant requiring veterinary attention if ingested by pets. Ensure pets cannot access fallen berries from any berry-producing Ligustrum species.

How to Grow Ligustrum undulatum — Complete Care Guide

Position

Full sun to part shade. Ligustrum undulatum is one of the most shade-tolerant hedging plants available — it will grow well in quite dense shade, making it useful in positions against north-facing fences, alongside buildings, or under deciduous tree canopies. In full sun it grows fastest and most densely. Even in quite heavy shade it maintains reasonable growth rates and can be kept tidy with regular clipping.

Soil

Ligustrum undulatum tolerates a wide range of soil types including sandy soils, loams, and clay-heavy Melbourne soils, provided drainage is reasonable. In waterlogged soils, root rot can occur — if planting in heavy clay, incorporate compost and gypsum before planting to improve drainage and soil structure. The plant prefers a near-neutral to slightly alkaline soil pH of 6.5–8.0.

Expert tip: An additional application of dolomite lime (ground dolomitic limestone) helps maintain healthy growth, particularly in more acidic soils. Dolomite lime supplies both calcium and magnesium — two nutrients important for maintaining the dense, glossy foliage that makes Box Leaf Privet such an effective hedging plant.

Planting for Hedges — Spacing and Technique

For a dense formal hedge: plant 4 plants per linear metre (25cm spacing between plants). This is the most commonly recommended spacing for achieving a dense, closed hedge within 1–2 seasons. For a medium hedge that fills out in 2–3 seasons, space plants 35–40cm apart.

Allow at least 40cm of clearance from fences, pathways, and other structures. While it is tempting to plant right against a fence line, hedging plants need room to develop both in front of and behind their established clipping line — insufficient clearance leads to an uneven, difficult-to-maintain hedge.

For topiary or shaped specimens, plant singly in a container or in prepared garden soil with ample space on all sides for the intended ultimate diameter.

Pruning — Timing, Technique, and the Wedge Shape

Prune Ligustrum undulatum in spring when new growth commences (September–October in Melbourne, slightly earlier in warmer climates) as the primary annual pruning. A second pruning in mid-summer (January–February) maintains shape through the peak growing season. A third light tidy in autumn (April) before winter growth slows completes the annual maintenance cycle.

Critical technique — the wedge shape: when shaping a formal hedge, always ensure the finished profile is slightly wider at the base than at the top. This wedge or trapezoidal cross-section allows all levels of the hedge to receive direct light, resulting in dense, leafy growth from ground level up to the top of the hedge. A hedge that is wider at the top than the base will progressively lose lower foliage due to shading — creating the bare-legged, unattractive lower stems that characterise neglected hedges.

Box Leaf Privet responds very well to hard cutting if a hedge has become overgrown. A reduction cut back to within 15–20cm of the desired final size, followed by normal maintenance trimming as the plant regrows, can reinvigorate an old, untidy hedge within one to two seasons.

Watering and Feeding

Water regularly for the first 12 months after planting — weekly during the growing season and more frequently during hot, dry summer spells. Once established, Box Leaf Privet is moderately drought tolerant, though supplemental watering during extended dry periods (more than 2 weeks without rain) improves appearance and growth rate. In containers, water more frequently and check daily in summer.

Fertilise with a complete slow-release organic plant food in spring and again in autumn. An additional application of dolomite lime in spring (approximately 100g per square metre of hedge root area) provides calcium and magnesium, promoting dense, healthy foliage. Avoid over-fertilising with high-nitrogen products — this promotes rapid but soft, disease-susceptible growth. Consistent light feeding is better than occasional heavy applications.

Common Problems

Ligustrum undulatum is generally problem-free. Occasional issues include: scale insects (treat with a horticultural oil spray when active scale is seen); sooty mould following scale infestations (improves once scale is controlled); occasional leaf spot in very humid, poorly ventilated positions (improve air circulation by careful hedge design and regular pruning). Powdery mildew can occur in dry summers in shaded positions — ensure adequate air movement through the hedge and water at the base rather than overhead.

Responsible Purchasing — The Privet Weed Problem in Australia

Australian gardeners and landscape professionals are increasingly aware of the environmental damage caused by invasive privet species. Ligustrum lucidum (Broad-leaf Privet), Ligustrum sinense (Chinese Privet), and Ligustrum vulgare (Common Privet) are among the most damaging environmental weeds on the eastern Australian coast. They spread via bird-dispersed berries into bushland, gullies, waterways, and remnant native vegetation, forming dense thickets that shade out native understory and displace wildlife habitat.

Ligustrum vulgare (Common Privet / European Privet) specifically is listed as an environmental weed in Victoria on numerous local government weed lists, in bushland areas of South Australia, and as an invasive plant in parts of NSW and Tasmania. Gardeners purchasing Ligustrum vulgare should commit to: planting only in areas well away from natural bushland, waterways, or conservation reserves; removing any seedlings that appear near bushland; and not composting or discarding prunings where seeds may spread.

Our strong recommendation is to use Ligustrum undulatum (Box Leaf Privet) as the privet of choice for all Australian garden hedging. It provides all the advantages of privet hedging without any of the environmental risk.

Design Ideas — Using Box Leaf Privet in Australian Gardens

•    Formal hedging: Box Leaf Privet is the fastest-forming formal hedge available for Australian gardens. Plant at 25–30cm spacing, clip to a neat wedge profile, and within 2 seasons a beautifully formal hedge from 40cm to 2m+ is achievable — in any style from Hampton to Modernist to Mediterranean.

•    Buxus replacement: If an existing Buxus hedge has been affected by box blight, Box Leaf Privet is the most practical and visually similar replacement. It clips to a similar fine-textured, formal profile and can be shaped to the same dimensions.

•    Topiary: Ligustrum undulatum clips exceptionally well into formal topiary shapes — balls, cones, columns, spirals, and standards. Its small leaves and rapid regrowth after trimming make it one of the best plants for precision topiary in Australia.

•    Courtyard structure: Use Box Leaf Privet as the structural backbone of a formal courtyard garden — clipped square or rectangular hedges defining garden rooms, framing a central feature, or creating parterre-style planting beds.

•    Street and driveway edging: Mass-plant at 25cm spacing along a driveway or front boundary to create a fast, formal, low-maintenance edging at 40–60cm height. Suits all Australian residential and commercial landscape styles.

•    Shade-tolerant privacy screen: Where other hedging plants fail due to shade (alongside a boundary fence in the shadow of a building), Box Leaf Privet's shade tolerance makes it the go-to choice for a dense evergreen privacy screen in difficult positions.

Frequently Asked Questions - FAQs

Is privet invasive in Australia?

Some privet species are invasive environmental weeds in Australia; others are not. Ligustrum lucidum (Broad-leaf Privet), Ligustrum sinense (Chinese Privet), and Ligustrum vulgare (Common Privet/European Privet) are listed as environmental weeds in various eastern Australian states and should not be planted near bushland or waterways. Ligustrum undulatum (Box Leaf Privet) is sterile, produces no viable berries, and is officially recognised as non-invasive — it is the recommended species for Australian garden hedging.

What is the difference between Box Leaf Privet and Common Privet?

Ligustrum undulatum (Box Leaf Privet) is sterile, compact, non-invasive, and safe for garden use across all of Australia. Ligustrum vulgare (Common Privet) produces berries that are spread by birds into bushland — it is listed as an environmental weed in Victoria, NSW, ACT, SA, and Tasmania. Box Leaf Privet is the strongly recommended choice for Australian garden hedging; Common Privet should not be planted near natural bushland or conservation areas.

Is privet toxic to dogs and cats?

Yes. All Ligustrum species contain compounds in their berries and leaves that are toxic to dogs, cats, horses, and humans. Ingestion of berries causes gastrointestinal upset, vomiting, and diarrhoea. Berry ingestion by children or pets requires immediate contact with the Poisons Information Centre (13 11 26) or a veterinarian. The pollen from flowering privet also causes respiratory irritation and asthma symptoms in sensitive individuals.

Is Box Leaf Privet the same as English Box (Buxus)?

No — they are different genera. English Box (Buxus sempervirens/japonica) is in the Buxaceae family; Box Leaf Privet (Ligustrum undulatum) is in the Oleaceae (olive) family. However, they produce visually similar formal hedges and are frequently used interchangeably. Box Leaf Privet grows significantly faster and is immune to the Buxus box blight fungal disease that has affected many Australian Buxus hedges.

How fast does Ligustrum undulatum grow?

Under ideal conditions with regular watering and feeding, Ligustrum undulatum grows 50cm to 1m per year. A dense hedge can be established within 1–2 growing seasons from 20–25cm plants at 25cm spacing. Growth rate reduces in shaded positions and in colder climates, but the plant still grows appreciably faster than Buxus under comparable conditions.