Winter Rose Care in Australia: How to Prune, Protect, & Prepare for Spring

There’s something deeply rewarding about growing roses. But if you want them to thrive year after year, you need to take proper care of them in winter.  

Winter is the best time to get roses under control. Most varieties go dormant during the cooler months, which slows growth and gives you a window to prune without putting stress on the plant. The cuts heal faster, the risk of disease drops, and you’re not trimming off fresh growth like you would in spring.  

If you’re tending a sprawling backyard garden or browsing a rose nursery online to expand your collection, proper winter care sets the stage for a spectacular spring bloom. So, let’s walk through exactly how to prune, protect, and prep your rose bushes for their best season yet.  

When to Prune Roses in Australia  

The best time to prune roses in Australia is late June through July, depending on your local climate. The goal is to prune after the risk of frost has passed but before new growth begins.  

Here’s a general guide by region:  

a) Cool Climates (e.g.: Canberra, Hobart)  

Start pruning in late June. These areas typically see an earlier onset of dormancy, so pruning can begin a little sooner.  

b) Temperate Climates (e.g.: Melbourne, Adelaide)  

Mid to late July is ideal. The plants will have slowed down, but they may still be holding on to leaves. It’s best to wait until they’re completely bare.  

c) Warm Climates (e.g.: Brisbane, northern NSW)  

You can wait until early August, especially if your roses are still producing some growth into winter.  

If you’re unsure, let the plant guide you. It’s safe to start once the leaves have dropped and the stems turn woody. Cutting too early can trigger soft new growth that won’t cope with the lingering cold.  

How to Prune Roses in Winter (Step-by-Step)  

Done right, pruning encourages stronger stems, more flowers, and healthier plants overall. Here’s a clear step-by-step guide on how to prune roses in winter.  

Step 1: Clean Your Tools  

Start with sharp, disinfected secateurs. Wipe the blades with rubbing alcohol or a bleach solution to prevent spreading disease from plant to plant. Clean cuts heal faster and reduce the chance of infection.  

Step 2: Remove Dead or Damaged Wood  

Snip off any brittle, brown, or blackened canes right back to the base or a healthy joint. These parts won’t recover and only attract pests and diseases.  

Step 3: Thin Out the Centre  

Your rose bush should look open and airy, like a vase. Remove inward-growing, crossing, or overcrowded branches. Doing this improves airflow and sunlight penetration, and also reduces the risk of fungal disease in humid regions.  

Step 4: Trim for Size and Shape  

Reduce the plant’s height by about one-third to half. Make each cut just above an outward-facing bud at a 45° angle. This encourages outward growth, giving your bush better structure and room to breathe. For beginners wondering how to trim rose bushes for winter, this step makes the biggest impact.  

Step 5: Clear the Base  

Remove old leaves, petals, and any weeds from around the base. They typically harbour pests and diseases that can carry through into spring.  

Step 6:  Seal the Large Cuts 

Use pruning paste or wound sealant on thicker stems to protect against borers, especially in warmer regions.  

If you’re working with more delicate varieties like David Austin Roses, prune lightly and keep some extra growth. These varieties benefit from a more conservative approach.  

Special Notes for Climbing Roses  

Climbing roses follow a different pruning rhythm than bush varieties. Instead of cutting them back heavily each winter, you need to focus on shaping and training them to encourage controlled, flower-heavy growth.  

First, identify the main canes: these are your plant’s permanent structure. Don’t cut these unless they’re damaged or completely unproductive.  

Next, look for lateral side shoots that grow off those main canes. Trim these back to about 2–3 buds from their base. These shoots are where most of the flowers will form in spring and summer.  

One of the best ways to get more flowers from climbing roses is to train the canes horizontally. Use soft ties to secure them along a fence, wall, or pergola beam. This encourages buds to develop all along the cane rather than just at the top.  

Climbing roses are more flexible than many people expect, and surprisingly easy to manage once you’ve got the hang of it.   

Feeding and Protecting Through Winter  

Once you’ve finished pruning, there are a few more steps to help your roses stay healthy through the colder months. Let’s go over these additional winter gardening tips.  

1) Apply Fresh Mulch  

As part of your rose plant maintenance routine, spread a layer of organic mulch (like compost, pea straw, or sugarcane) around the base of each rose. Mulch helps regulate soil temperature, keeps roots protected, and suppresses weeds. It also feeds the soil as it breaks down.  

2) Cut Back on Watering  

During winter dormancy, your roses won’t need much water. In most areas, watering once a week (or less) is enough. Too much water can lead to root rot or fungal issues, more so if the drainage is poor.  

3) Treat for Fungal Spores  

After pruning, spray your plants with a winter clean-up treatment such as lime sulphur or copper oxychloride. These sprays help kill off lingering fungal spores (particularly black spots and mildew) that can carry into spring.

4) Hold Off on Fertiliser  

Don’t feed your roses yet. Fertilising during dormancy can produce weak, soft growth that’s vulnerable to frost. Wait until early spring, when you see new shoots forming. That’s the right time to apply a balanced rose fertiliser from a trusted rose plant nursery or rose supplier.  

Thinking of Expanding Your Garden?  

If you’re looking to add something fresh to your garden beds, it’s perfectly fine to buy roses online during the colder months.  

 Penfield Roses offers a wide range of rose plants for sale online, including:  

• Classic hybrid teas and floribundas  
• David Austin Roses for a fuller, English-style bloom  
• Climbing roses perfect for fences, pergolas, or arches  
• Compact varieties ideal for pots, balconies, and small spaces  

Prefer something already potted and ready to go? Feel free to buy our potted roses online in Australia, grown and shipped directly from our rose nursery in Adelaide.  

Our team has decades of hands-on experience, and we grow everything on-site. When you’re browsing, know that you’re buying from a trusted rose plant nursery, not a dropshipping warehouse.  

Ready to Take the Next Step?  

Winter rose care isn’t complicated, but it does make all the difference. Pruning at the right time, managing pests, and setting up your plants for a clean, healthy reset will pay off with stronger stems and bigger blooms come spring.  

It’s also a great time to assess your garden and plan for what’s next, whether that means reshaping existing plants or expanding your collection with new varieties. A little effort now means less stress, fewer problems, and a much more rewarding growing season ahead.  

At Penfield Roses, we pride ourselves on our quality rose varieties, expert advice, and fast, reliable shipping across Australia. If you have questions or need help choosing the right rose for your space, our team is ready to help. 

Browse the range or get in touch today!