Why Pittosporum Is Replacing Photinia as a Hardier Evergreen Hedge

More and more amateur gardeners are becoming frustrated by bare patches in their hedges and prying eyes from neighbouring properties. One former trend plant is failing in large numbers in particular. Landscape gardeners are therefore switching to a different, colourful evergreen that is considerably more resilient and creates a dense screen.

Why the former hedge favourite is becoming a problem

Fungal disease affects entire housing developments

Photinia, commonly called red-tip photinia, was long considered an ideal choice: it grew rapidly, produced vivid red new growth and quickly formed a privacy screen. Countless metres of Photinia hedging were planted in new housing developments. The situation has now changed markedly.

The cause is Entomosporium leaf spot disease, a fungal infection that is spreading extensively. It initially creates small brown dots on the foliage. These marks enlarge, the leaves can no longer photosynthesise properly, and eventually they drop.

“Where dense, red hedges once stood, there are now gaps, dry shoots and an unobstructed view of the patio and living room.”

The fungus benefits from mild winters and wet springs. This is precisely the type of weather occurring increasingly often across central Europe. Nurseries and local authorities report that the disease is now appearing in almost every region. Anyone with a long hedge made entirely of Photinia risks the fungus racing through the whole row like wildfire.

Expensive sprays with limited results

Many garden owners attempt to tackle the issue by applying fungicides, collecting diseased leaves and pruning more heavily. All of these measures take time and money, with highly mixed results.

• Fungicide applications need to be repeated frequently.
• Their effect is often limited when neighbouring hedges are infected too.
• Heavy pruning temporarily removes the privacy screen.
• Gathering fallen leaves is laborious and still does not completely prevent reinfection.

Many amateur gardeners lose heart when fresh spots appear after every spell of rain. They are looking for a plant that is less susceptible and does not require constant chemical treatment.

Single-species hedges reveal their weaknesses

The decline of Photinia recalls the problems affecting Thuja hedges a few years ago. At the time, many people had chosen a single species, until drought, fungi and pests struck. A hedge consisting of just one type of plant is extremely vulnerable once a particular pest or fungal disease becomes established.

Gardeners and landscapers now report sharply falling demand for Photinia. Nurseries are expanding their ranges of alternative hedge shrubs, and one name is mentioned especially often: Pittosporum.

Pittosporum: the quiet winner among privacy-screening shrubs

Evergreen, dense and surprisingly ornamental

Pittosporum is attracting steadily more attention from professionals. It is evergreen, compact and visually appealing throughout the year. Many varieties have variegated green-and-cream leaves, while others offer deep green foliage with a subtly lacquered sheen.

Annual growth is generally between 20 and 30 centimetres. That is enough to establish dependable privacy within a few years, without the hedge needing to be cut back severely every year.

“Pittosporum provides exactly the combination many people are missing: permanent foliage, a dense structure and attractive colours, without becoming high-maintenance.”

This makes it particularly suitable for terraced homes and small gardens: it grows quickly enough to block unwanted views yet remains easy to manage. Light, regular shaping produces an even, elegant hedge that does not become straggly.

Strong disease resistance means less maintenance

Compared with Photinia, Pittosporum is noticeably more robust against foliar fungal diseases. Serious problems have so far occurred only in isolated cases. This significantly reduces the need for fungicides, benefiting both the environment and household budgets.

Its care requirements remain straightforward:

• One shaping prune a year, in late spring or summer, is usually sufficient.
• Water thoroughly during dry spells, but not every day.
• Feed lightly in spring with organic fertiliser or a general garden fertiliser.
• Choose a sheltered position that is preferably not in deep shade.

For anyone wishing to avoid chemical plant protection products, Pittosporum is a dependable option. This is becoming an increasingly important consideration in densely built-up residential areas where children or pets spend a great deal of time in the garden.

Why specialists still recommend mixed hedges

Despite its advantages, specialists caution against planting whole streets with Pittosporum alone. The experience with Thuja and Photinia shows that planting one species extensively increases the risk of widespread problems in the future.

Instead, gardeners recommend so-called mixed hedges. Pittosporum can form an important framework, but should be combined with other woody plants, such as:

• Elaeagnus: robust, with silvery foliage and well suited to dry positions.
• Hazel: native, valuable to insects and birds, and produces nuts in autumn.
• Cornus sanguinea (common dogwood): bright red winter stems and white flowers in early summer.
• Cherry laurel varieties with high fungal resistance: providing a dark contrast within the hedge.

“The more diverse the structure of a hedge, the lower the risk that a single pest will disable the entire privacy screen.”

How garden owners can switch to a new hedge

The best planting times and a gradual transition

Those replacing a disease-ridden hedge do not need to remove everything at once. A gradual change is often sensible. Begin by taking out the worst affected sections and planting new shrubs, such as Pittosporum, between the existing plants.

The ideal planting periods are:

Period	Suitable for
Autumn (September–November)	Root establishment before winter and a good start in spring
Early spring (March–April)	Container-grown plants, once the ground is no longer frozen

Importantly, heavily infected leaves and branches from the old hedge should not go on the compost heap. Dispose of them with household waste instead. This reduces infection pressure in the garden.

Position, soil and Pittosporum variety selection

Pittosporum prefers bright locations with some protection from cold easterly winds. Light partial shade is possible, but dense shade quickly results in open growth and bare areas in the middle of the shrub.

The soil should drain freely, as the shrub copes poorly with waterlogging. In heavy clay soils, sand or grit can improve the structure. A mulch layer of composted bark or chipped material retains soil moisture and protects the roots.

Depending on the region, it is worth checking the frost tolerance of individual varieties. In mild areas and large cities, more sensitive types may be suitable, whereas hardier forms should be selected in higher, colder locations.

More than privacy: added benefits for climate and wildlife

Choosing Pittosporum and mixed hedges delivers more than seclusion. Dense evergreen planting breaks the wind, filters dust and gives birds places to shelter. When combined with flowering shrubs such as dogwood or hazel, it creates a lively garden boundary that supplies food and cover for many months.

At the same time, a varied hedge improves the garden’s microclimate. It holds moisture, protects against wind-driven drying and creates noticeably more pleasant spots in the garden on hot days. In densely built neighbourhoods, it can provide a small green buffer against urban heat islands.

Anyone uncertain about how Pittosporum will fit into their own garden should plant one or two specimens as a trial and observe their growth for one or two seasons. This makes it easier to judge which height, density and combinations suit the garden’s style and the surrounding neighbourhood.