How to Grow Trachymene Plants

Guide to Growing Lace Flower, Wild Parsnip, and Blue Lace Flower

Although Trachymene are perennials, they are usually grown as half hardy annuals in the garden.

Trachymene plants range from 15 to 60 cm (6 to 24 inches) in height.

Trachymene plants bloom in the summer, when they carry small purple flowers in a globe, atop an erect stalk.

Some common names for Trachymene include Laceflower and Blue Laceflower.

Australian Lace Flower
Australian Lace Flower (Trachymene coerulea) by Aussiegall; Creative Commons.

Trachymene pilosa
Trachymene pilosa - Native Parsnip by h3_six; Creative Commons.

Trachymene Growing and Care Guide

Common Names: Lace Flower, Wild Parsnip, Rottnest Island Daisy, Blue Lace Flower, Spongefruit, Native Candytuft.
Family: Araliaceae.
Life Cycle: Half hardy perennial commonly grown as a half hardy annual by gardeners.
Height: 8 to 20 inches (20 to 50 cm).
Native: Australasia.
Growing Region: Zones 3 to 8. As a perennial in zones 8 to 10.

Flowers: Summer and/or autumn.
Flower Details: Purple, lavender, white. Tiny flowers in mass.
Foliage: Light green. Obtuse. Obcordate. Divided. Sticky.
Sow Outside: Cover seed. Following the last frost. Spacing 8 to 12 inches (20 to 30 cm).
Sow Inside: Use peat pots. Germination time: two weeks to one month in the dark. Temperature 70°F (21°C). Two months before expected last frost. Transplant outdoors following the last frost.
Requirements: Full sunlight. Ordinary soil. Organic soil. Moist soil. Can survive in dry soils. Provide support. Occasional watering during prolonged dry periods. Pinch tips.

How to Grow Laceflower and other Trachymene Plants in your Garden

When growing Trachymene species such as Laceflower from seeds, they should be sown in spring, just before the last frost. Lightly cover the seeds once sown.

Ideally Laceflower should be spaced about 20 to 25 cm (8 to 10 inches) apart. Grow in a sunny part of the garden that has a soil enriched with organic matter.

If starting off Laceflower indoors, then do so about 10 weeks in advance.

The seeds should be sown into peat pots. It should take about two to four weeks for Laceflower to germinate at a temperature of about 20 degrees centigrade (68°F). The germination should be done in the dark.

Once growing transplant the Trachymene seedlings outdoors a week or so after the last chance of a spring frost.

Caring for Laceflower

It is quite easy to care for Laceflower, the young Trachymene plants should be pinched back at the tips to encourage branching. As they like slightly moist soil, it is important to water them with moderation when soil dries out. For best results grow Laceflower closely together.

Common Questions

How many members does the Trachymene genus have?

The Trachymene genus consists of around 30 to 40 species, commonly known as Blue Lace Flowers.

Do members of Trachymene make a good garden or landscaping plant?

Yes, Trachymene species are commonly used as ornamental plants due to their attractive lace-like flowers.

Which Trachymene species are most frequently grown by gardeners?

The most popular species among gardeners is Trachymene coerulea, known for its blue, lace-like flowers.

Are members of the Trachymene plant genus fragrant?

Trachymene flowers are not typically known for their fragrance.

What is the perfect location to grow Trachymene?

Trachymene prefers a sunny location with well-drained soil. It is drought tolerant once established.

Is Trachymene invasive in the USA, if so in which states?

At present, Trachymene species are not considered invasive in the USA. Always consult local regulations for the most current information.

How do I remove Trachymene plants from my garden?

To remove Trachymene, pull up the plants, making sure to remove the entire root system.


The Trachymene genus includes annual and perennial plants native to Australia. They are admired for their clusters of small, delicate flowers that bloom in summer.

Grow Trachymene from seeds, sown in spring. They prefer full sun to partial shade and well-drained soil. Regular watering is required, particularly during dry periods, but overwatering should be avoided to prevent root rot. They are often grown as cut flowers due to their long vase life.

I hope that you enjoyed this guide on how to grow Trachymene plants. You may also enjoy the following Gardener's HQ tree growing guides: How to grow Ailanthus altissima and Cercis siliquastrum plants.