Starting a flower garden in Australia is a fantastic way to enjoy the country's unique climate, whether you’re in the tropical north, temperate south, or anywhere in between. By choosing the right seeds, even beginners can create a beautiful, thriving garden. Here are ten of the best flower seeds to grow in Australia, with easy-to-follow planting tips for each to get you started.
1. Sunflowers (Helianthus annuus)
Sunflowers are a joy to grow, with tall, sturdy stems and sunny blooms. They’re perfect for beginners as they grow quickly and require little maintenance, thriving in full sun—a common condition across much of Australia.
- Planting Tips: Plant sunflower seeds directly in the ground in spring and summer. They thrive in full sun and well-drained soil. Space them 15 cm apart, and cover seeds with about 2 cm of soil.
- Watering: Keep soil moist as seeds germinate, but avoid waterlogging.
- Bloom Time: Summer to early autumn.
2. Zinnias (Zinnia elegans)
Zinnias offer vibrant colours in Australia’s warmer months. They’re resilient to Australia’s varying climates, making them ideal for borders and cutting gardens.
- Planting Tips: Sow seeds directly into garden beds in spring and summer. Zinnias prefer full sun and well-drained soil. Space seeds 15-45 cm apart depending on the variety.
- Watering: Water at the base to prevent mildew, keeping soil lightly moist.
- Bloom Time: Summer to late autumn.
3. Marigolds (Tagetes spp.)
Marigolds are hardy and pest-resistant, making them perfect for Australian gardens. They bring bright orange and yellow colours and are excellent for companion planting to protect vegetable beds from pests.
- Planting Tips: Sow marigold seeds outdoors after the last frost in areas with cooler winters, or in spring and summer in tropical areas. Space seeds 15-30 cm apart in well-drained, nutrient-rich soil.
- Watering: Water regularly, avoiding leaf contact to prevent mildew.
- Bloom Time: Spring through autumn, with year-round blooms in warmer regions.
4. Cosmos (Cosmos bipinnatus)
Cosmos are delicate, drought-tolerant flowers that thrive in Australia’s hotter climates, especially in full-sun positions. They’re perfect for garden borders or containers and come in various colours, adding a whimsical touch.
- Planting Tips: Sow cosmos seeds outdoors in spring and summer. They prefer full sun and average soil. Space seeds 30-45 cm apart.
- Watering: Once established, they need minimal watering.
- Bloom Time: Summer to early autumn.
5. Everlasting Strawflowers (Xerochrysum bracteatum)
Everlasting Strawflowers, native to Australia, are drought-tolerant and known for their vibrant blooms that last long after they’re cut. These resilient flowers can handle the country’s sun and warmth, making them great for beginner gardeners.
- Planting Tips: Sow strawflower seeds directly in the garden in spring or early summer. They do best in full sun and sandy, well-drained soil. Space plants 25-30 cm apart.
- Watering: Water sparingly; they tolerate dry conditions.
- Bloom Time: Late spring to autumn.
6. Billy Buttons (Craspedia globosa)
Billy Buttons are native to Australia. Their round, bright yellow blooms on slender stems make them ideal for native gardens, and they thrive in a range of conditions across Australia.
- Planting Tips: Start seeds indoors 8-10 weeks before the last frost if you’re in a cooler region. Transplant them outdoors in a sunny spot with well-drained soil. Space plants 20-30 cm apart.
- Watering: Keep soil consistently moist while plants are young, reducing watering once they’re established.
- Bloom Time: Spring to summer.
7. Lavender (Lavandula angustifolia)
Lavender thrives in Australia’s dry, Mediterranean-like climates, making it ideal for sunny areas and well-drained soils. This fragrant perennial is perfect for borders, rock gardens, and pots.
- Planting Tips: Start lavender seeds indoors 10-12 weeks before the last frost, or sow directly in warmer climates. They prefer full sun and slightly alkaline, well-drained soil. Space plants 30-45 cm apart.
- Watering: Water sparingly once established.
- Bloom Time: Late winter to early summer, with a longer season in mild regions.
8. Cornflowers (Centaurea cyanus)
Cornflowers bring rustic charm to the garden with clusters of blue, pink, and white blooms. They’re hardy and tolerant of Australia’s various climates, making them easy to grow.
- Planting Tips: Sow seeds directly in full-sun gardens in autumn or spring, spacing seeds 15-30 cm apart. They prefer well-drained, slightly alkaline soil.
- Watering: Water moderately, allowing soil to dry between waterings.
- Bloom Time: Spring to early summer.
9. Snapdragons (Antirrhinum majus)
Snapdragons offer vertical structure and cool-season colour in Australian gardens. With dragon-shaped blooms in reds, pinks, yellows, and whites, snapdragons are easy to grow in both gardens and containers.
- Planting Tips: Start seeds indoors 6-8 weeks before the last frost in cooler areas, or sow in early autumn in warmer regions. Snapdragons do best in full sun and well-drained soil. Space plants 15-30 cm apart.
- Watering: Keep soil consistently moist without waterlogging.
- Bloom Time: Autumn through spring, with blooms extending into summer in cooler climates.
10. Morning Glories (Ipomoea spp.)
Morning Glories are climbing annuals that add a charming touch to trellises and fences. Their funnel-shaped blooms open in the morning, closing by late afternoon. These flowers grow well in Australia’s warm and sunny conditions.
- Planting Tips: Sow seeds directly outdoors after the last frost, spacing seeds 15-30 cm apart. In cooler regions, start seeds indoors and transplant them once the risk of frost passes. Soak seeds overnight before planting for faster germination.
- Watering: Water regularly but avoid overwatering.
- Bloom Time: Summer to autumn.
Final Tips for Beginner Gardeners in Australia
Gardening in Australia presents unique challenges and rewards due to its varied climates. Here are a few extra tips for beginner gardeners:
- Know Your Growing Zone: Australia has a diverse range of climate zones, from tropical and subtropical to temperate and arid. Understanding your region will help you choose the best planting times.
- Soil Preparation: Australian soils can vary greatly, so enrich your garden with compost or organic matter to ensure plants get the nutrients they need.
- Mulching: Use mulch around young plants to retain moisture, suppress weeds, and keep roots cool.
- Natural Pest Control: Protect your garden with companion planting (e.g., marigolds for pest deterrence) and organic sprays to avoid harming beneficial insects.
With these ten beginner-friendly flowers and a few simple steps, you can create a thriving Australian garden that brings beauty and joy year-round. Happy gardening!
