Winter Veggies - How and When to Grow Winter Vegetables in Perth

Late summer to early autumn is the perfect time to start prepping your winter veggie garden in Perth. There are plenty of vegetables and herbs that love the cooler Perth autumn and winter weather, which you can harvest all the way through winter to spring.

There are many important factors to consider when planting your winter veggies, including the entire growth time of your plant from seed to harvest, best soils and fertilisers and managing winter pests and diseases found in Perth.

Now is the time to get started planting your winter veggies, so check out some of our top tips for Perth winter veggie enthusiasts! If you’re wondering what vegetables to plant now in Perth, this guide covers everything from growing times and soil preparation to pest control and planting tips for the season.

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Why Plant a Winter Vegetable Garden?

Gardening is a great pastime to get you out in the fresh air and reduce screen time. There is something particularly rewarding about growing vegetables, as you have something to show for your efforts at harvest time!

With the push towards organic vegetables and clean living, home vegetable gardens are increasing in popularity, as consumers know their food is fresh and pesticide-free. Homegrown veggies also taste so much better than anything from the supermarket, particularly favourites such as fresh peas and corn.

A winter veggie patch can also save you money in the long run. You can reduce your weekly supermarket bill by growing your staple veggies, such as spinach and carrots.

Tending to your winter garden is also a great outdoor activity to do with the family. It will teach your children responsibility as they will need to water and nurture the plants, along with helping them learn about nutrition and healthy food sources. There is also a sense of achievement in growing vegetables from seed to maturity, which is great for building self-confidence.

Planting in Autumn for Winter Harvest

Most winter vegetables in Perth are going to need at least 10 weeks to grow, so start planting these in autumn, around April and May in Perth. Autumn is also a good time to plant deciduous fruit trees, such as apples and pears, which not only provide a bountiful harvest but also add beauty to your garden landscape.

Planting your vegetable and herb seeds in autumn, before the cold weather really sets in, will help to strengthen your veggies so they can withstand the more extreme temperatures in the winter months as well. Be vigilant for pests after the first rains, as increased activity from snails and slugs can damage newly planted seedlings.

If you’re looking for the easiest vegetables to grow in Perth, start with fast-growing options like lettuce, radish, and spinach. These are more forgiving and perfect for beginners.

What Are Winter Vegetable Growing Times?

You need to understand the growing times for your winter vegetables, so you plant them at the right time for their full growth period. Some leafy vegetables are ready to harvest in six weeks, while root vegetables take much longer, up to around 18 weeks.

The easiest way to know this is to check the back of the seed packets, which will have all the information you will need about how and when to sow the seeds, growth rates and harvest info.

Mr Fothergill’s Seed Packet with sowing and harvesting info on the back.
 

For example, cauliflower seedlings emerge 14 - 28 days after planting and are ready to be harvested after around 100 days (approx. 14 weeks). Carrots are usually ready to harvest for 50 days (approx. 7 weeks) after planting.

For optimal growth times and the best results, we recommend good plant food to help mature the plants as quickly as possible. Once the seedlings sprout, the plants need to grow quickly, to optimise the quality of the vegetable.

What Is the Best Soil and Mulch for Growing Winter Vegetables?

A lot of metro Western Australia sits on old sand dunes, which means our soil is made up of mainly sand - this is not ideal for veggie gardens. When preparing your garden, it is important to consider weather and soil conditions, as the warm and sunny climate of Perth influences gardening choices. You will need a lot of organic matter in the soil to help feed your plants – it cannot be too compacted or sandy.

A few inches of mulch is ideal to help insulate the soil and retain moisture. Mulch will also help you keep the weeds under control. Some of the best mulches for veggie gardens are mushroom composts and other specialised veggie mixes, which are purpose-built composts containing the ideal organic matter for your veggie garden to thrive. Have a chat to a landscape supplier about the best mulch to start your veggie garden off on the right foot.

Watering Your Vegetable Garden

Give your veggie garden a good thorough watering a few times a week. You will need to water less in the winter months obviously, as the weather will do some of the watering for you. Check your soil or mulch to ensure it is always moist and gauge your watering from there. When planning your watering schedule, consider the needs of the whole garden to maintain a healthy ecosystem and prevent overwhelm. Never water your garden at night, as any moisture left on your garden overnight will increase the chances of disease.

How Much Sunlight Does Your Winter Garden Need?

Your winter vegetables will need full sunlight to grow, so make sure you pick a sunny spot to set up your vegetable patch, at least 5+ hours of full sun per day. You will need to be smart with your planting too – place your tallest crops (such as corn and vine plants such as peas) at the back of the veggie garden, so your shorter plants will still get sunlight).

Fruiting and flowing vegetables require the most sunlight. If your garden gets a lot of shade in winter, you might want to focus on those plants which require less direct sunlight, such as lettuce, spinach and onions.

What Veggies To Plant In Autumn & Winter

According to Mr Fothergill’s Seasonal Planting Guide, now is a great time to be planting broccoli, cauliflower, carrots and spinach, to be harvested in winter. Winter planting offers the benefit of growing a variety of vegetables that thrive in cooler temperatures. Selecting and maintaining cabbages properly can lead to a healthier crop, as they require specific fertilization and are susceptible to pests. See the below guide for more information on the best times to plant winter veggies in Perth:

Guide for Sowing Winter Vegetable and Herb Seeds in Perth

Companion Planting

Yes, that’s right, your winter vegetables like to have a companion! Companion planting involves grouping different varieties together, that complement and enhance. For example, you want to grow all the plants together, which require the same amount of water and sunlight.

There are some plants that naturally repel garden pests away from your vegetable crops. Chamomile deters flies and mosquitoes and gives strength to any plant growing nearby. Rosemary is known to protect plants as it has a pungent scent that drives away other bugs, including cabbage moths. The smell of onion repels many insects from beetroot, broccoli and other veggies. Planting mint is said to deter garden pests away from your cabbage and tomatoes, including cabbage white butterflies, ants and fleas.

There are also plants that are bad companions. Onions and garlic release a substance that reduces the growth of asparagus. Do your homework and make sure you couple up the right plants together, for optimal conditions in your veggie garden.
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Winter Veggie Pests in Perth (and How to Manage Them)

Even though winter has fewer bugs than summer, some pests thrive in the cooler months. Common winter culprits include:

• Slugs and snails – come out in wet weather, love leafy greens.
• Cabbage moths and loopers – still active in Perth’s mild winters.
• Aphids – often cluster on new growth.

It's important to protect sweet corn from birds, particularly blackbirds, which are attracted to it along with other vegetables. Consider using physical barriers and screening solutions to safeguard your crops.

Use natural deterrents where possible, such as companion planting (as already mentioned), neem oil, or garlic spray. Raised garden beds with copper tape can also deter slugs and snails effectively. Be especially vigilant after the first rains, as this is when pest activity, including snails and slugs, tends to increase, posing a threat to newly planted seedlings.

Winter Veggie Garden Maintenance Tips

Once your veggie garden is planted, regular maintenance will help ensure a healthy and productive patch. Remove any yellowing or dead leaves to reduce disease risks, and keep an eye out for slugs, snails and caterpillars – common winter garden pests in Perth. Netting or natural pest deterrents like crushed eggshells, beer traps, or coffee grounds can help manage them.

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