How To Grow Rhubarb in Australia

Quick Guide: Growing Rhubarb in Australia

  • Optimal Growing Temperatures: Between 5°C and 20°C.
  • Ready to Harvest: Approximately 1 year after planting.
  • Space Between Plants: Plant 90 cm apart.
  • Companion Plants: Cabbage, Broccoli, Cauliflower... (See More)
  • Plants to Avoid: None.
  • Plant Type: Propagator.

When to Plant Amaranth in Australia

Australia Map


Best planting months for Amaranth in the Tropical regions are from April to August. This includes areas like Cairns, Darwin, and Broome.

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

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Amaranth can be planted from January to March and September 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, Amaranth can be planted in the months of January, October, November, and December. Cities in the Cool region include alpine regions of Victoria and Tasmania.

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Best planting months for Amaranth in the Arid region are January to April and August to December.

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Choosing the Right Variety

To successfully cultivate rhubarb in Australia, it's important to choose the right variety that suits the local climate and growing conditions. There are several popular rhubarb varieties that thrive in Australian gardens. Consider the following options when selecting the variety that best suits your needs.

  1. Victoria: Victoria rhubarb is a widely grown variety known for its excellent flavour and productivity. It produces long, thick stalks that are green with a hint of red. Victoria rhubarb is a reliable choice for Australian gardeners.
  2. Wandin: Wandin rhubarb is another popular variety in Australia. It is a green-stalked rhubarb with a tangy flavour. This variety is known for its vigorous growth and high yields.
  3. Silvan Giant: Silvan Giant rhubarb is a robust variety with thick, red stalks. It is well-suited for warmer climates and tends to produce larger stalks compared to other varieties.
  4. Ever Red: As the name suggests, Ever Red rhubarb is known for its vibrant red stalks. It has a slightly sweeter taste compared to other varieties, making it a favourite for desserts and jams.

Factors to Consider When Selecting a Variety

When choosing a rhubarb variety for your garden, there are a few factors to consider:

  • Climate: Different rhubarb varieties have varying temperature requirements. Ensure that the variety you choose is suitable for the climate in your region. For example, some varieties are better adapted to cooler regions, while others tolerate warmer climates.
  • Yield: Consider the expected yield of the variety. Some varieties are more productive than others, producing larger quantities of stalks.
  • Flavour: The flavour of rhubarb can vary slightly between different varieties. Some varieties have a more tart taste, while others are sweeter. Choose a variety that matches your flavour preferences.
  • Growth Habit: Look at the growth habit of the variety. Some varieties may have a more compact growth habit, making them suitable for smaller garden spaces.

By considering these factors and selecting the right variety, you can ensure a successful rhubarb harvest in your Australian garden. Remember to provide proper care and maintenance, as outlined in our previous sections, to maximise the growth and productivity of your chosen rhubarb variety.

Preparing Your Garden

Before you can start growing rhubarb in Australia, it's essential to prepare your garden properly. This section will cover the ideal growing conditions for rhubarb and the importance of soil preparation and pH levels.

Ideal Growing Conditions for Rhubarb

Rhubarb thrives in cool climates, making it an excellent choice for many regions in Australia. When selecting a spot in your garden for rhubarb, consider the following factors:

  • Sunlight: Rhubarb plants require at least six hours of direct sunlight each day to grow and produce healthy stalks. Choose a location in your garden that receives ample sunlight.
  • Temperature: Rhubarb prefers cool temperatures and can tolerate frost. It tends to struggle in hot and humid conditions. If you live in a warmer region, consider planting rhubarb, where it can receive shade during the hottest part of the day.
  • Wind Protection: Strong winds can damage rhubarb plants, so it's important to choose a location that provides some protection from strong gusts. Planting near a fence or building can offer the necessary shelter.

Soil Preparation and pH Levels

Preparing the soil is crucial for the successful growth of rhubarb. Follow these steps to ensure your soil is ready:

  1. Test the pH: Rhubarb prefers slightly acidic soil with a pH level between 5.5 and 6.5. You can test the pH of your soil using a home testing kit or by sending a sample to a soil testing laboratory.
  2. Amend the Soil: If your soil's pH is outside the ideal range, you can adjust it by adding organic matter. For acidic soil, incorporate lime or wood ashes to raise the pH. For alkaline soil, add organic matter such as compost or well-rotted manure to lower the pH.
  3. Improve Drainage: Rhubarb prefers well-draining soil. If your soil tends to hold water, consider adding organic matter or coarse sand to improve drainage. This will prevent the rhubarb roots from sitting in waterlogged soil, which can lead to rot.
  4. Add Nutrients: Rhubarb plants benefit from nutrient-rich soil. Before planting, incorporate organic matter such as compost or well-rotted manure into the soil. This will provide essential nutrients and improve the soil structure.

By creating the ideal conditions for rhubarb growth, you'll give your plants the best chance to thrive. Once your garden is prepared, you can move on to the next step of planting rhubarb. For more information on growing other vegetables and herbs in Australia, check out our A-Z Grow Guides.

Planting Rhubarb

When it comes to planting rhubarb in Australia, there are a few important considerations to keep in mind. This section will explore the propagation methods of rhubarb, specifically seeds vs. crowns, as well as provide planting techniques for a successful rhubarb garden.

Propagation Methods: Seeds vs. Crowns

There are two main methods for propagating rhubarb: seeds and crowns.

Seeds are a cost-effective option for starting your rhubarb plants from scratch. However, it's important to note that growing rhubarb from seeds can be a time-consuming process. The germination period for rhubarb seeds can take several weeks to months. Additionally, rhubarb grown from seeds may not produce true-to-type plants, meaning they may not exhibit the same characteristics as the parent plant.

On the other hand, crowns are the most common method used for growing rhubarb. A crown is the root and bud section of an established rhubarb plant. It is best to obtain crowns from reputable nurseries or garden centres to ensure healthy and disease-free plants. Planting rhubarb crowns is a faster and more reliable way to establish your rhubarb garden. The crowns have already gone through the initial growth stages, allowing them to produce harvestable stalks sooner.

Planting Techniques for Success

To ensure a successful rhubarb harvest, follow these planting techniques:

  1. Choose the right location: Rhubarb prefers a sunny spot in the garden with well-drained soil. It's important to select an area where the plants will not be shaded by other taller plants.
  2. Prepare the soil: Before planting, prepare the soil by removing any weeds or debris. Rhubarb thrives in soil that is rich in organic matter. Consider incorporating compost or well-rotted manure into the soil to improve its nutrient content.
  3. Planting depth: When planting rhubarb crowns, ensure that the buds are positioned approximately 2-3 centimetres below the soil surface. This will allow the crown to establish properly and encourage healthy growth.
  4. Spacing: Rhubarb plants need ample space to spread out. Leave approximately 90-120 centimetres between each plant to allow for proper growth and airflow.
  5. Watering: After planting, water the newly planted rhubarb thoroughly. Rhubarb plants require regular watering, especially during dry periods. Aim to keep the soil consistently moist but not waterlogged.
  6. Mulching: Apply a layer of organic mulch around the base of the rhubarb plants to help retain moisture, suppress weeds, and regulate soil temperature.

By following these planting techniques, you can set your rhubarb plants on a path to success. Remember to be patient, as rhubarb requires some time to establish itself before it can be harvested. For more information on growing other vegetables and herbs in Australia, check out our articles on how to grow silverbeet in Australia, how to grow parsley in Australia, and how to grow okra in Australia.

Caring for Rhubarb Plants

Once you have successfully planted your rhubarb, it’s important to provide proper care to ensure healthy growth and a bountiful harvest. This section will cover important aspects of watering and irrigation, fertilising and nutrient requirements, and controlling weeds and pests.

Watering and Irrigation

Rhubarb plants require regular watering to thrive. Aim to keep the soil consistently moist but not waterlogged. During dry periods, it may be necessary to water your rhubarb plants more frequently. However, be cautious not to overwater, as this can lead to root rot.

A good practice is to provide deep watering sessions, ensuring that the water reaches the plant's root system. To avoid wetting the foliage, which can promote disease, it's best to use a drip irrigation system or water at the base of the plants.

Fertilising and Nutrient Requirements

To promote strong growth and healthy rhubarb plants, it's important to provide proper nutrition. Before planting, incorporate well-rotted manure or compost into the soil to improve its fertility.

During the growing season, it's beneficial to apply a balanced organic fertiliser, such as 5-5-5 or 10-10-10, to provide essential nutrients. Apply the fertiliser according to the package instructions, ensuring that it is evenly distributed around the base of the plants.

Avoid over-fertilizing, as excessive nitrogen can result in lush foliage growth at the expense of rhubarb stalk production. Monitor the plants for any signs of nutrient deficiencies, such as yellowing leaves, and adjust your fertilisation regimen accordingly.

Controlling Weeds and Pests

Weeds can compete with rhubarb plants for nutrients and water, so it's important to keep the garden bed weed-free. Regularly cultivate the soil around the plants to remove any weeds, taking care not to damage the shallow root system of rhubarb.

Pests such as slugs, snails, and aphids can also pose a threat to your rhubarb plants. To control these pests, consider using organic methods such as handpicking or applying natural repellents. Additionally, providing good garden hygiene by removing decaying plant matter can help deter pests.

For a comprehensive guide on organic gardening, including techniques for managing weeds and pests, check out our article on how to grow peas in Australia.

With proper care and attention, your rhubarb plants will reward you with abundant and delicious harvests. Remember to monitor the moisture levels, provide adequate nutrition, and keep the garden bed weed-free. By implementing these practices, you'll be on your way to enjoying the tangy and versatile flavours of homegrown rhubarb.

Harvesting and Utilizing Rhubarb

Now that you have successfully grown your rhubarb plants, it's time to reap the rewards of your hard work. Harvesting rhubarb at the right time and utilising it in delicious recipes is key to enjoying the full potential of this versatile plant.

When to Harvest Rhubarb

Rhubarb is typically ready for harvest in its second or third year of growth. It's important to wait until the plant has established a strong root system before harvesting. As a general rule, you can start harvesting rhubarb when the stalks reach a height of about 25-30 centimetres (10-12 inches).

The ideal time to harvest rhubarb is in the spring, usually from April to June in Australia. During this period, the stalks are at their peak flavour and tenderness. However, keep in mind that rhubarb can be harvested throughout the growing season as long as you leave a few stalks for the plant to continue its growth and recover.

Proper Harvesting Techniques

To harvest rhubarb, firmly grasp the stalk near the base and give it a gentle twist and pull. The stalk should easily detach from the plant. Avoid cutting the stalks with a knife, as this can introduce potential sources of infection.

When harvesting, it's important to only harvest about one-third of the plant's stalks at a time. This allows the remaining stalks to continue growing and ensures the overall health and longevity of the plant. If you have a large rhubarb patch, you can rotate the harvesting areas to give the plants ample time to recover.

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