The Art of Hedging: Keys to Healthy Hedges from Benchmark Gardening

At Benchmark Gardening, we believe that hedges are more than just a boundary – they’re a dynamic feature that adds structure, beauty, and functionality to your garden. Whether you're using hedges for privacy, as a windbreak, or simply as a stylish element in your landscape, healthy, well-maintained hedges are a cornerstone of a thriving outdoor space. In this blog post, we’ll delve into the art of hedging in Victoria, Australia, and share expert tips on how to ensure your hedges stay lush, vibrant, and resilient all year round.

Why Hedges Matter in Victoria Gardens

Hedges are incredibly versatile in Australian gardens, especially here in Victoria where diverse climate zones range from coastal to more temperate regions. Whether you’re designing a formal garden or creating a natural, wildlife-friendly hedge, the right choice of plants and proper care will ensure your hedge thrives. Healthy hedges help with privacy, reduce noise, and can even protect your garden from strong winds, particularly in coastal or rural areas.

Step 1: Choose the Right Hedge for Your Space

Choosing the right plant for your hedge is essential, particularly in Victoria where climate and soil conditions can vary widely. Here are a few key factors to keep in mind when selecting your hedge:

• Climate: Victoria has a range of climates, from cool coastal areas to warmer inland regions. For coastal areas, consider salt-tolerant hedges like Lilly Pilly or Buxus (Boxwood). In cooler inland areas, native species such as Wattle or Grevillea can perform well.

• Soil: Victoria’s soils can range from clay to sandy, so it’s important to choose a plant species suited to your garden’s soil type. Native plants often thrive in local conditions, but amending your soil with organic matter can improve its structure.

• Sunlight: The amount of sun your hedge will receive is a critical factor. For full sun, species like Lilly Pilly or Privet work well, while for shady areas, Camellia or Photinia might be more suitable.

• Size & Shape: Keep in mind how big you want your hedge to grow. For a dense, low hedge, Murraya or Boxwoodare perfect, whereas larger hedges for screening could include species like Leyland Cypress or Pittosporum.

By understanding your garden’s conditions, you can choose the right plant to ensure your hedge flourishes.

Step 2: Planting Your Hedge – Get the Foundation Right

Proper planting is the first step to a thriving hedge. Here’s how to ensure your hedge gets off to a strong start in Victoria’s varied conditions:

• Spacing: Plant your hedging plants closer together than you might expect. For a dense, thick hedge, plant around 45 cm (18 inches) apart for smaller plants or up to 1 metre (3 feet) apart for larger shrubs.

• Depth: Dig a hole that’s twice the size of the root ball to give the roots plenty of space to establish themselves. This is especially important for larger hedges or those planted in heavy clay soils.

• Watering: Victoria can have dry spells, especially in summer, so be sure to water your hedge deeply after planting. During the first few months, water consistently to help establish roots, and ensure regular watering during hot periods.

The foundation you lay through proper planting will ensure your hedge thrives in the long term.

Step 3: Pruning for Health and Shape

Pruning is a crucial part of keeping your hedge healthy and looking its best. Regular trimming encourages thick, dense growth and prevents woody, sparse sections. Here’s how to get it right:

• Timing: The best time to prune most hedges in Victoria is after the summer heat has passed, typically in late autumn or early spring. For evergreen species like Lilly Pilly or Boxwood, prune in late winter to encourage strong new growth as the weather warms.

• Shape: Trim your hedge regularly to maintain its shape and encourage compact growth. For most species, aim for a slight taper from the base to the top so that the bottom gets enough sunlight and remains lush.

• Remove Deadwood: Regularly inspect your hedge for dead or damaged branches and remove them. This improves airflow and encourages healthy new growth.

We recommend at least two to three trims per year for a healthy, neat hedge.

Step 4: Watering & Feeding – Keep Your Hedges Thriving

Victoria can experience a range of weather conditions, from dry summers to rainy winters. Here’s how to keep your hedge well-hydrated and nourished:

• Watering: In Victoria, watering deeply and consistently is essential, particularly during hot, dry summers. Be sure to water at the base of the hedge and avoid wetting the foliage, as this can promote fungal diseases.

• Feeding: To encourage healthy growth, feed your hedge in early spring with a balanced, slow-release fertiliser. This helps your plants develop strong roots and vibrant foliage. For Australian natives, look for a fertiliser suited to native plants, which will be lower in phosphorous.

• Mulching: Applying a 5–10 cm layer of mulch around the base of your hedge can help conserve moisture, suppress weeds, and improve the soil. Use organic mulch such as wood chips, bark, or leaf litter.

These simple steps will ensure that your hedge remains well-nourished and strong throughout the year.

Step 5: Pest & Disease Control

Like all plants, hedges are susceptible to pests and diseases. However, with the right care, you can keep these threats at bay. Common issues in Victoria include:

• Aphids and Scale Insects: These pests can damage your hedge by sucking sap and causing yellowing leaves. A strong jet of water or an application of insecticidal soap can often clear them up.

• Powdery Mildew: Humid conditions, particularly in late spring, can lead to fungal issues like powdery mildew. Ensure good air circulation by spacing plants appropriately and prune regularly. If necessary, treat with a fungicide designed for use on hedges.

• Leaf Spot: Wet, damp weather can sometimes cause leaf spot diseases. Remove affected leaves promptly and ensure your hedge isn’t being overwatered.

A quick inspection every month will help you catch any potential problems early.

Step 6: Rejuvenation & Renovation

If your hedge has become overgrown or spindly, it might need a rejuvenation prune. The best time to renovate a hedge in Victoria is early spring, before the new growth starts. Cut back the hedge by up to one-third, focusing on removing old wood and encouraging fresh growth from the base. Many hedges, including Lilly Pilly and Murraya, respond well to this kind of rejuvenation pruning.

In cases where your hedge has become seriously overgrown, consider consulting a professional for a complete renovation. A well-executed rejuvenation can restore your hedge’s shape and vitality.

Final Thoughts

Healthy hedges are the backbone of a beautiful garden, providing structure, privacy, and protection from the elements. By following these expert tips on plant selection, planting, pruning, watering, and pest control, you’ll be well on your way to enjoying a lush, vibrant hedge year-round.

At Benchmark Gardening, we’re passionate about helping Victorians create gardens that thrive. Whether you need help planting, pruning, or caring for your hedges, our expert team is here to assist. Contact us today to get started on creating the perfect hedge for your garden!

Happy gardening from Benchmark Gardening!