Ruqayyah Snyder
Greenhouses are a great way to cultivate a wide variety of plants, offering a controlled environment that extends the growing season. This is especially useful in Australia, where there is huge variation in temperature throughout the year. Greenhouses come in many shapes and sizes, and there are many designs available for beginners. This paragraph will explore what to grow in a greenhouse in Australia, offering a guide for beginners.
| Characteristics | Values |
|---|---|
| Purpose | Protection from frost and chilly weather, extending the growing season, cultivating a wide variety of plants, and providing a controlled environment. |
| Plants | Herbs (basil, mint, parsley), microgreens (kale, radishes, sunflower shoots), cucumbers, capsicums, zucchinis, berries, celery, tomatoes, beans, beetroot, eggplant, chilies, and flowers. |
| Benefits | Year-round fresh produce, experimentation with crops, protection from pests, stable temperatures, and moisture regulation. |
| Considerations | Space, soil, temperature, water sources, watering frequency, pH levels, ventilation, and light. |
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What You'll Learn
Herbs and microgreens
Herbs
Greenhouses provide an artificial environment that is perfect for growing tender herbs. They allow you to control heat, moisture, and shade, giving herbs the perfect environment in which to grow. This protection from the elements can extend the growing season and increase the variety of herbs you can grow.
Herbs that do well in a greenhouse include basil, mint, and parsley. Their compact size makes them ideal for greenhouse cultivation. Mints are particularly well-suited to greenhouse growing, as they are invasive plants that can be contained in a container. This allows you to experiment with the many different varieties of mint available to the home grower.
To ensure the success of your herbs, it is important to install a misting system and automatic drip hoses to ensure a steady supply of moisture. It is also important to have a shading system in place, as herbs can be sensitive to too much direct sunlight.
Microgreens
Microgreens are small, edible seedlings, usually harvested no more than 14 days after sprouting. They are nutrient-dense and can be grown in a greenhouse to protect them from hungry birds and adverse weather conditions.
Some of the most popular microgreens to grow include broccoli, pea, radish, sunflower, purple kohlrabi, and clover. Broccoli microgreens are popular for their mild flavor and nutritional value. Pea shoots are slightly sweet and highly versatile, while radish microgreens have a delightful spice that is tempered when used in warm soups and noodle dishes. Sunflowers are the sweetest of the popular microgreens, making them great for smoothies and lunchboxes, and they are also highly nutritious.
When growing microgreens, it is important to consider the amount of space you have and the seed density of your trays. If growing on a commercial scale, you will need the right infrastructure, such as a climate-controlled environment that allows for optimal light, humidity, and temperature.
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Fruits and vegetables
Greenhouses in Australia are an excellent way to cultivate a wide variety of fruits and vegetables, as they offer a controlled environment that extends the growing season. Here are some fruits and vegetables that you can grow in your Australian greenhouse:
Fruits
- Cape gooseberries: This plant can be grown year-round and is easy to cut back when it gets too big.
- Berries: Berries, especially strawberries, thrive in the controlled environment of a greenhouse, benefiting from extended growing seasons and protection from frost.
- Tomatoes: The high roof structure of a greenhouse is ideal for growing tomatoes, as it provides protection from adverse weather conditions that can split the fruit.
Vegetables
- Radishes: Radishes are an excellent choice for beginners due to their quick growth, versatility, and low maintenance. They offer a satisfying and visually appealing addition to your produce with their vibrant hues and crisp texture.
- Zucchini: Zucchini is a prolific plant that thrives in the controlled environment of a greenhouse, providing a steady harvest of fresh, flavorful, and versatile produce.
- Microgreens: Microgreens such as kale, radishes, and sunflower shoots are nutrient-dense and can be harvested within weeks.
- Herbs: Start your greenhouse journey with herbs like basil, mint, and parsley, which are ideal for their compact size.
- Cucumbers: Growing slicing cucumbers or pickling varieties in a greenhouse offers extended growing seasons and a higher likelihood of successful, bountiful harvests.
- Capsicums: Capsicums, or sweet peppers, are a fantastic choice for beginners due to their vibrant colours and sweet flavours. Select varieties like California Wonder or Sweet Chocolate that are well-suited for greenhouse cultivation.
- Celery: Growing celery in a greenhouse ensures consistent moisture levels in the soil and protection from pests, resulting in robust stalks.
- Kale: Kale is a nutrient-dense vegetable perfect for year-round production in a greenhouse, regardless of external weather conditions.
- Beans: Dwarf French beans are a good option, but they need warmth to germinate and cannot survive frost.
- Eggplants: Eggplants, also known as aubergines, are a tender crop that can benefit from the protected environment of a greenhouse.
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Cucumbers and courgettes
Courgettes, also known as zucchinis, are a tasty and versatile vegetable that can be grown with ease in a greenhouse. They are a prolific crop that thrives in the controlled environment, providing a steady harvest of fresh, flavourful produce. To grow courgettes, prepare the soil by adding manure, compost, or other organic matter to make it nutrient-rich and well-draining. Sow the seeds around 1cm deep, placing a single seed in a pot that’s around 7.5cm in size, and water well. Cover the pots with a propagator lid and leave them in a warm area for a week. Once you see signs of growth, remove the lid and place the pots in a sunny part of your greenhouse. Ensure warm temperatures between 18 and 24°C and high humidity for optimal growth.
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Flowers and seedlings
Greenhouses come in various shapes and sizes, and many simple designs are available for beginners. Some common styles include tunnel, gable, raised dome, sawtooth, skillion, and flat arch. Lean-to and a-frame styles are also popular, with the former being attached to the wall of a home or other structure.
When growing flowers and seedlings in a greenhouse, it is important to consider the water needs of different plants and ensure proper drainage. Overwatering or underwatering can cause delays in seedling growth, so it is crucial to monitor watering closely. Maintaining optimal pH levels in the soil is also essential, as imbalances can slow germination without showing visible signs.
The high roof structure of a greenhouse makes it ideal for growing flowers that require ample space, such as tomatoes, cucumbers, and courgettes. The protected environment extends the growing season and shields plants from adverse weather conditions like heavy rain, which can damage fruit.
In addition to vegetables, greenhouses are excellent for cultivating a variety of flowers and ornamental plants. The controlled environment allows for year-round growth and protection from pests and diseases, resulting in healthier and more vibrant flowers. With proper planning and care, a greenhouse can be a rewarding space for growing a diverse range of flowers and seedlings.
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Nursery plants and trees
Greenhouses are an excellent way to cultivate a wide variety of plants and vegetables, especially in Australia, where the temperature varies significantly throughout the year. They offer a controlled environment, extending the growing season and protecting plants from harsh weather conditions, pests, and diseases.
Greenhouses are particularly advantageous for growing tropical plants, such as cacti, orchids, and indoor plants, as they require heating during the winter months. Ornamental plants, like ferns and flowering plants, also thrive in greenhouses, as they can be provided with their specific requirements of sun, shade, and heat.
Additionally, greenhouses are ideal for cultivating small plants and succulents. Terrariums, for instance, can be as small as a lightbulb or as large as a fish tank, providing the perfect environment for these miniature species.
For those in colder regions of Australia, greenhouses offer protection against frost and chilly weather, ensuring that plants that may otherwise struggle can flourish.
With the ability to regulate temperature, humidity, and light, greenhouses provide optimal conditions for nursery plants and trees to prosper, regardless of external weather conditions.
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Frequently asked questions
Greenhouses in Australia are ideal for growing plants as they help protect them from frost and chilly weather. They also extend the growing season and offer a controlled environment, allowing you to grow a wide variety of plants.
Herbs like basil, mint, and parsley are great options for beginners due to their compact size. Radishes are also an excellent choice as they grow quickly, are low-maintenance, and add a burst of colour to your garden.
You can grow a variety of vegetables in a greenhouse, including cucumbers, zucchinis, capsicums, beans, tomatoes, celery, kale, and beetroot.
