How to Grow Squash in Australia

Quick Guide: Growing Squash in Australia

  • Optimal Growing Temperatures: Between 21°C and 35°C.
  • Ready to Harvest: 7-8 weeks after planting.
  • Space Between Plants: Ensure 60 - 80 cm apart.
  • Companion Plants: Corn (See More).
  • Plants to Avoid: N/A (See More).
  • Plant Type: Seed.

When to Plant Squash in Australia

Australia Map


Best planting months for Squash in the Tropical regions are March, April, May, June, July, and August. This includes areas like Cairns, Darwin, and Broome.

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For the Subtropical region, Squash can be planted from January to March and August to December. Cities in the Subtropical region include Brisbane, Central Coast, and Sydney.

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Squash can be planted from January to February and July to December in the Temperate regions of Australia. Cities in the Temperate region include Melbourne, Adelaide, Geelong, and Perth.

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For the Cool region, Squash can be planted from January to February and August to December. Cities in the Cool region include alpine regions of Victoria and Tasmania.

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Best planting months for Squash in the Arid region are January to February, August, September, October, November, and December.

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In this comprehensive guide, we will delve into the specifics of when to plant squash in Australia. We will explore the different climate zones across the country, discuss the ideal growing conditions for squash, and provide a detailed planting schedule to ensure that you can make the most of your gardening endeavours. So grab your gardening gloves and let's get started on this squash-growing adventure!

Climate and Growing Conditions for Squash

Australia is a vast country with diverse climate zones, each presenting unique challenges and opportunities for gardeners. Understanding the climate and growing conditions in your region is essential for successfully growing squash. Whether you reside in the tropical north or the cool southern regions, knowing the ideal conditions for growing squash will help you cultivate a bountiful harvest.

Ideal Conditions for Growing Squash

Regardless of the climate zone, there are certain conditions that are universally favourable for growing squash. Squash plants thrive in well-draining soil that is rich in organic matter. Prior to planting, it is important to prepare the soil by incorporating compost or well-rotted manure to improve its fertility and structure.

Full sun exposure is another crucial requirement for squash plants. They need at least 6-8 hours of direct sunlight daily to ensure optimal growth and fruit production. If you have a shaded garden, consider planting squash in containers that can be moved to sunnier spots throughout the day.

When it comes to temperature, squash plants prefer warm weather. Soil temperatures between 15°C-35°C are ideal for germination and growth. If you are starting seeds indoors, make sure to maintain a warm environment until the seedlings are ready to be transplanted.

Proper irrigation is essential for squash plants, as they have shallow roots that are prone to drying out. Regular watering is crucial, especially during dry spells or heatwaves. Aim to keep the soil consistently moist, but not waterlogged, to prevent rot and other moisture-related diseases.

By understanding the climate zones in Australia and the ideal growing conditions for squash, gardeners can confidently embark on their squash-growing journey. Whether you are in the tropics or the temperate south, with the right knowledge and care, you can enjoy a bountiful harvest of delicious squash. Stay tuned for the next section, where we dive into the different types of squash to grow in Australia.

Types of Squash to Grow

When it comes to growing squash in Australia, gardeners have a variety of options to choose from. Squash is a versatile and delicious vegetable that can be enjoyed in a multitude of dishes. Whether you prefer the tender and delicate flavour of summer squash or the rich and hearty taste of winter squash, there is a type of squash that will suit your palate and gardening skills.

Summer Squash: Summer squash is a popular choice among gardeners due to its fast-growing nature and abundant harvest. This type of squash is harvested while the fruits are still young and tender, before the rind hardens. The most common varieties of summer squash include zucchini, yellow crookneck, and pattypan. These vibrant and colourful vegetables can be harvested throughout the summer months, providing a continuous supply of fresh produce for your culinary creations.

Winter Squash: Unlike summer squash, winter squash takes a longer time to mature and develop its characteristic hard rind. This type of squash is harvested in the late summer or early fall, and it can be stored for months, making it an excellent option for gardeners looking to preserve their harvest. Winter squash varieties include butternut, acorn, and spaghetti squash, each with its own unique texture and flavour. These hearty vegetables are perfect for roasting, baking, and soups, adding a delicious touch to your winter meals.

Pumpkin Varieties: Pumpkins are a type of winter squash that deserves a category of their own. They are known for their vibrant colour, distinctive shape, and association with autumn festivities. From the classic Jack-o'-lantern pumpkins to the smaller and sweeter sugar pumpkins, there is a pumpkin variety for every purpose. Whether you want to carve spooky faces or bake a delicious pumpkin pie, growing your own pumpkins can be a rewarding experience.

By including a variety of squash types in your garden, you can enjoy a continuous harvest throughout the year. From the tender and delicate flavours of summer squash to the rich and hearty taste of winter squash, there is a squash variety to satisfy every gardener's palate. So, why not try your hand at growing some squash of your own? With the right knowledge and care, you'll be rewarded with a bountiful harvest that will elevate your culinary creations to new heights.

Planting Schedule for Squash in Australia

When it comes to growing squash in Australia, timing is everything. To ensure a successful harvest, it's crucial to understand the planting schedule that aligns with Australia's unique climate and seasons. By following a well-planned schedule, gardeners can maximise their squash yields and enjoy an abundance of these versatile and delicious vegetables.

Spring Planting

Spring is an ideal time to start planting squash in Australia. As the weather warms up and frosty nights become a distant memory, the soil becomes more receptive to seed germination and plant growth. In most parts of Australia, spring typically starts around September and lasts until November, although specific dates may vary depending on the region.

During the spring season, gardeners have the opportunity to plant both summer and winter squash varieties. Summer squash, such as zucchini and yellow squash, thrive in the warmer temperatures of spring and early summer. These fast-growing vegetables produce an abundant harvest within a relatively short period of time, making them a popular choice for many gardeners.

On the other hand, winter squash, including butternut squash and spaghetti squash, have a longer growing season and require more time to mature. By planting winter squash in the spring, gardeners give the plants ample time to develop before the cooler months arrive. This ensures a bountiful harvest when the time comes.

Summer Planting

As the temperatures rise and the sun shines brightly, summer brings its own set of planting opportunities for squash enthusiasts. In Australia, summer typically spans from December to February, although the timing may vary depending on the specific climate zone.

During the summer season, gardeners can continue planting summer squash varieties that thrive in the heat. These warm-loving vegetables revel in the long, sunny days and abundant rainfall that often accompany the summer months. By planting in the summer, gardeners can enjoy a continuous harvest of fresh, tender squash throughout the season.

It's worth noting that some regions of Australia experience scorching temperatures during the summer, which can be challenging for certain squash varieties. In such cases, providing shade and maintaining optimal soil moisture levels can help protect the plants from the intense heat and prevent premature wilting.

Fall Planting

As autumn settles in and the days start to become shorter, it's time to consider fall planting of squash. Fall in Australia typically spans from March to May, although this may vary depending on the specific climate zone.

Fall planting presents an opportunity to grow winter squash varieties that require a longer growing season. By planting in the fall, gardeners allow the squash plants to establish themselves before the arrival of winter. This ensures that the plants are robust and well-prepared to withstand the cooler temperatures and potential frosts.

In addition to winter squash, fall is also an excellent time to start planting other cool-season crops that can complement squash in the garden. 

By following this planting schedule and adapting it to suit specific regional conditions, Australian gardeners can enjoy a steady supply of squash throughout the year. Whether it's the tender zucchinis of summer or the hearty butternut squash of winter, there's always a variety to suit every season and palate.

Preparation and Planting Process

Once you have selected the perfect spot in your garden to grow squash, it's time to prepare the soil and start the planting process. This crucial step will set the foundation for healthy and thriving squash plants. By following these guidelines, you can ensure that your squash plants have the best chance of success.

Soil preparation

Before planting squash, it is essential to prepare the soil properly. Squash plants thrive in well-draining soil that is rich in organic matter. Start by removing any weeds or debris from the planting area. Loosen the soil using a garden fork or tiller, ensuring it is free from clumps and compacted areas.

To improve the soil's fertility, incorporate compost or well-rotted manure. These organic amendments will add valuable nutrients and improve the soil structure, allowing the squash plants to establish strong root systems. Additionally, consider conducting a soil test to determine if any specific nutrients are lacking. This will help you adjust the soil's pH and nutrient levels accordingly.

Seed starting or transplanting

The next step in the planting process is deciding whether to start squash seeds indoors or directly sow them in the garden. Starting seeds indoors allows for earlier planting and gives you more control over the growing conditions. If you choose this method, sow the seeds in biodegradable pots or seed trays filled with seed-starting mix. Keep them in a warm, well-lit area until the seedlings are ready for transplanting.

Alternatively, you can opt for direct sowing if the weather and soil conditions are favourable. Wait until the soil has warmed up and there is no longer a risk of frost. Plant the seeds about an inch deep, placing two or three seeds per planting hole. Once the seedlings emerge, thin them out, leaving the strongest one to grow.

If you prefer to transplant seedlings, make sure to harden them off before moving them outdoors permanently. Gradually expose the seedlings to outdoor conditions over the course of a week, starting with a few hours of sunlight and gradually increasing the time each day.

Proper spacing and planting depth

When it comes to spacing squash plants, providing them with enough room to grow is essential. For bush varieties, allow at least 2 to 3 feet between each plant. This spacing ensures that the plants receive proper air circulation, reducing the risk of disease. For vining varieties, such as pumpkins or butternut squash, give them even more space, around 4 to 6 feet apart.

As for planting depth, squash seeds should be planted approximately 1 inch deep, while seedlings should be planted at the same depth as they were in their pots. Avoid burying the seedlings too deep, as this can hinder their growth.

Remember to refer back to the planting schedule in the previous section to ensure you are planting squash at the appropriate time for your region. By following these preparation and planting guidelines, you are well on your way to a bountiful harvest of delicious squash.

Care and Maintenance of Squash Plants

Once you've successfully planted your squash seeds or transplanted seedlings into your garden, it's important to provide proper care and maintenance to ensure healthy growth and a bountiful harvest. This section will guide you through the essential steps of watering and irrigation, fertilisation, and pest and disease control for your squash plants.

Watering and Irrigation

Watering your squash plants is crucial to their overall health and productivity. Squash plants have a high water requirement, particularly during hot and dry periods. Adequate moisture levels in the soil promote vigorous growth and help prevent issues such as blossom end rot.

To ensure proper watering, aim to keep the soil consistently moist, but not waterlogged. A deep watering once or twice a week is generally sufficient, depending on the weather conditions. However, always check the moisture level of the soil before watering to avoid over-watering.

Irrigation methods such as drip irrigation or soaker hoses are highly recommended for squash plants. These methods deliver water directly to the base of the plants, minimising water loss through evaporation and reducing the risk of fungal diseases.


Fertilising your squash plants is essential to provide them with the necessary nutrients for healthy growth and fruit production. Before planting, it's advisable to amend the soil with organic matter such as compost or well-rotted manure to enrich its nutrient content.

During the growing season, regular fertilisation is recommended. You can use a balanced, slow-release fertiliser or opt for organic options like fish emulsion or seaweed extract. Follow the instructions on the fertiliser package for the appropriate application rate.

Applying a side dressing of compost or aged manure around the base of the plants every few weeks can also provide a nutrient boost. Be careful not to over-fertilize, as excessive nitrogen can result in lush foliage but limited fruit production.

Pest and Disease Control

Protecting your squash plants from pests and diseases is vital to ensure their survival and productivity. Common pests that can affect squash include aphids, squash bugs, and cucumber beetles. Regularly inspect your plants for any signs of infestation and take prompt action to control these pests.

Natural pest control methods, such as handpicking pests or using insecticidal soaps and neem oil, can be effective in managing minor infestations. Additionally, encouraging beneficial insects, such as ladybugs and lacewings, to inhabit your garden can help keep pest populations in check.

Fungal diseases, such as powdery mildew and downy mildew, can also pose a threat to squash plants. To minimise the risk of these diseases, ensure proper air circulation around the plants by spacing them adequately. Avoid overhead watering, as the moisture on the leaves can contribute to fungal growth.

In cases of severe infestations or disease outbreaks, consider using organic or chemical treatments as a last resort. Consult with your local garden centre or agricultural extension for specific recommendations based on the pests and diseases prevalent in your region.

By following these care and maintenance practices, you'll provide your squash plants with the optimal conditions for growth, leading to a plentiful harvest. Stay vigilant, address any issues promptly, and enjoy the satisfaction of cultivating your own delicious squash varieties.

Companion Plants for Squash

  • Corn: Squash, corn, and beans are known as the "Three Sisters" in Native American gardening practices. Corn provides support for the squash vines to climb, while the squash leaves create shade that helps keep the soil moist. Beans fix nitrogen in the soil, benefiting all three plants.
  • Beans: As mentioned above, beans are a great companion for squash. They provide nitrogen to the soil, which is beneficial for squash growth.
  • Radishes: Radishes can help deter squash bugs by acting as a trap crop. Squash bugs are attracted to radishes and may leave your squash plants alone.
  • Oregano: Oregano can repel pests that commonly affect squash plants, such as cucumber beetles.
  • Dill: Dill attracts beneficial insects that prey on pests like aphids and caterpillars.

Want to learn more? Check out our growth guides on other popular fruits, herbs and vegetables.

Harvesting and Storing Squash

Once you've successfully nurtured your squash plants, it's time to reap the rewards of your hard work. Harvesting your squash at the right time ensures optimal flavour and texture, while proper storage techniques allow you to enjoy your homegrown produce for longer. In this section, we will explore the signs of readiness to harvest, the proper techniques for harvesting squash, and some useful storage tips.

Signs of Readiness to Harvest

Determining the ideal time to harvest your squash is crucial for a satisfying culinary experience. Each variety of squash has its own unique characteristics that indicate when it is ready to be picked. Here are some general signs to look for:

  • Colour: Most squash varieties, such as zucchini or yellow squash, should have vibrant, glossy skins with their characteristic colour fully developed. For example, zucchini should have a deep, dark green colour.
  • Texture: Gently press your finger against the skin of the squash. If it feels firm and resists indentation, it is likely ready to be harvested. However, if the skin feels soft or mushy, it may be overripe.
  • Size: Refer to the specific variety's recommended size for harvesting. For instance, zucchini is typically best when it is 6 to 8 inches long, while pumpkins should be fully mature and reach their desired size according to their variety.

Remember to regularly inspect your squash plants as they can mature quickly, and missing the harvest window may result in oversized or tough fruits.

Proper Harvesting Techniques

To ensure that you harvest your squash without causing any damage to the plant or the fruit, it's important to use the proper techniques. Here are some guidelines to follow:

  • Use pruners or a sharp knife: When it's time to harvest your squash, use clean pruners or a sharp knife to make a clean cut. Avoid twisting or pulling the fruits, as this can damage the plant.
  • Cut the stem: Leave a small portion of the stem attached to the fruit. This helps to prolong its shelf life and prevents moisture loss, which can lead to premature spoilage.
  • Handle with care: Squash can be delicate, so handle them gently to avoid bruising or puncturing the skin.

Storage Tips

After harvesting your squash, proper storage techniques will help extend their shelf life and maintain their quality. Here are some essential tips for storing your harvested squash:

  • Cure winter squash: For varieties such as pumpkins or butternut squash, allow them to cure in a warm, dry location for a period of time (usually around two weeks) before storing. This process helps the skin harden and enhances the flavour.
  • Choose the right storage conditions: Squash prefers cool and dry environments. Find a well-ventilated area with a temperature range between 50 to 60°F (10 to 15°C) and humidity levels below 70%. A basement or pantry can be suitable for storing squash.
  • Avoid stacking: Place the squash in a single layer on a shelf or a table, ensuring they do not touch each other. This prevents any excess weight from causing bruising or rotting.
  • Inspect regularly: Regularly check your stored squash for any signs of decay or spoilage. Remove any affected fruits to prevent the spread of rot.

By following these harvesting and storage tips, you can savour the flavours of your homegrown squash for an extended period, ensuring that your efforts in the garden are enjoyed well beyond the harvest season.

Frequently Asked Questions

As gardeners and enthusiasts embark on their squash-growing journey, they often come across a multitude of questions. In this section, we will address some of the most common inquiries to provide you with the knowledge you need to cultivate thriving squash plants.

Can Squash be Grown in Containers?

Absolutely! Growing squash in containers is a convenient option, especially if you have limited space or prefer to have your plants easily accessible. Whether you live in an apartment or have a small backyard, container gardening allows you to enjoy the bountiful harvest of squash plants.

When opting for container gardening, it's important to choose a container that is at least 16 inches deep and wide. This will provide ample space for the squash plant's root system to develop. Additionally, ensure that the container has proper drainage to prevent waterlogged soil, as squash plants dislike soggy conditions.

To facilitate healthy growth, use a high-quality potting mix that is rich in organic matter. This will provide the necessary nutrients for the squash plants to thrive. Regular watering and fertilisation are crucial, as container-grown plants tend to dry out more quickly and may require additional nutrients.

How Long Does it Take for Squash to Grow?

The time it takes for squash to grow varies depending on the variety and growing conditions. Generally, squash plants take anywhere from 40 to 60 days from the time of planting to produce mature fruits. This timeframe encompasses the germination period, growth of the plant, and the development of squash fruits.

It's important to note that different types of squash have varying maturation periods. Summer squash varieties, such as zucchini and yellow squash, tend to mature more quickly compared to winter squash varieties like butternut and acorn squash. Therefore, always refer to the specific instructions provided with the seed packet or plant tag for precise information on maturity times.

In addition to the type of squash, environmental factors such as temperature and sunlight play a significant role in the growth rate. Warm temperatures and ample sunlight accelerate the growth process, resulting in earlier maturity. Conversely, colder temperatures and insufficient sunlight may prolong the time it takes for squash to mature.

Can Squash Plants Cross-Pollinate?

Yes, squash plants are known to cross-pollinate with other varieties within the same species. Cross-pollination occurs when pollen from one squash plant is transferred to the female flower of a different squash plant, resulting in hybrid seeds.

If you are growing multiple varieties of squash in close proximity, cross-pollination can occur naturally through the assistance of bees and other pollinators. This can lead to unexpected characteristics in the resulting fruits and seeds. For instance, cross-pollination between a zucchini and a pumpkin plant could produce squash with unique flavours, colours, or shapes.

To prevent cross-pollination, it is recommended to separate different squash varieties by a distance of 30 to 50 feet. Alternatively, you can utilise physical barriers such as row covers to protect the plants from cross-pollination.

However, if you are not concerned about the potential cross-pollination and are open to experimenting with new squash varieties, you can embrace the natural process and see what exciting combinations emerge in your garden!

Now that we have answered some common questions, let's conclude our comprehensive guide to planting squash in Australia.

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