Borage (Borago officinalis), commonly known as starflower, is a popular herb in Australian gardens thanks to its striking blue flowers, edible leaves, and ease of cultivation. If you’re considering adding borage to your garden, understanding its typical size and growth habit in Australian conditions will help you plan your space effectively. Here’s a detailed look at the size and growth characteristics of borage plants in Australia.
Typical Height and Spread of Borage in Australia
In Australian gardens, borage plants generally grow to a height of 60 to 100 centimeters (approximately 2 to 3 feet). The plant tends to have a sprawling or straggly growth habit, often forming a rounded shape that can spread out to about 45 to 90 centimeters (1.5 to 3 feet) wide.
- Height: Most borage plants reach between 60 cm and 1 meter tall.
- Spread: They typically spread about 45 to 90 cm wide, creating a bushy, open plant structure.
This size makes borage a medium-sized herb, suitable for herb beds, vegetable gardens, and even larger containers.
Growth Habit and Appearance
Borage has hollow, branched stems covered in fine, white hairs that give the plant a silvery-green appearance. The leaves are large, oval to lance-shaped, and also covered in soft bristles, which can feel a bit prickly to the touch. Its star-shaped, vibrant blue flowers bloom profusely during warmer months, attracting bees and other pollinators, earning it the nickname “bee’s bread.”
Growing Conditions Affecting Size
Borage is very adaptable and thrives in a wide range of Australian climates—from temperate to subtropical regions. Its size can vary depending on:
- Sunlight: Prefers full sun to part shade. Plants grown in full sun tend to be more compact and robust.
- Soil: Well-drained soil supports healthy growth; borage tolerates poor soils but flourishes in fertile, organic-rich ground.
- Water: Moderate watering encourages lush growth, but borage is fairly drought-tolerant once established.
- Space: Crowding can limit spread and overall size, so spacing plants about 30-45 cm apart is recommended.
Growing Borage in Containers
Borage can also be successfully grown in pots or containers. In these settings, expect plants to reach about 60-80 cm tall with a more contained spread, depending on pot size and care.
Summary of Borage Plant Size for Australian Gardeners
| Feature | Size Range (Australia) |
|---|---|
| Height | 60 cm – 1 meter (2 – 3 feet) |
| Spread | 45 cm – 90 cm (1.5 – 3 feet) |
| Growth Habit | Bushy, sprawling, straggly |
| Preferred Spacing | 30 – 45 cm between plants |
Why Grow Borage?
Beyond its manageable size, borage is valued for:
- Attracting pollinators like bees and wasps, which benefit your entire garden.
- Edible leaves and flowers with a mild cucumber flavor, perfect for salads and garnishes.
- Its role as a companion plant that can improve growth and pest resistance in nearby crops.
Borage is a versatile and attractive herb that fits well into many Australian gardens thanks to its moderate size and easy-going nature. Whether you have a spacious garden bed or a sunny balcony, borage’s manageable height and spread make it an excellent choice for adding color, culinary value, and ecological benefits.