Thryptomene

Sun

Full sun to light partial shade; flowering is usually best in sun.

Water

Water regularly during establishment, then occasionally during prolonged dry spells. Avoid persistently wet roots.

Soil

Freely draining sandy, gravelly or light loamy soil, preferably slightly acidic to neutral. Poor drainage is a greater problem than low fertility.

Height

3-5 ft (0.9-1.5 m)

Spread

3-6 ft (0.9-1.8 m)

Flowers

Mainly winter through spring, sometimes beginning in autumn; masses of tiny pale pink to white flowers.

Foliage

Evergreen. Small, closely spaced, oval green leaves on slender, branching stems.

Growth

Moderate

Care needed

Low

• Pollinators
• Drought tolerant
• Heat tolerant
• Wildlife
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Needs looking after

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.6 ft (0.5 m)

2. After 1 year

   2.1 ft (0.64 m)

3. After 2 years

   2.6 ft (0.78 m)

4. After 3 years

   3 ft (0.92 m)

5. After 5 years

   4 ft (1.2 m)

   full size

About 5 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Native to

Australia

Growth rate

Moderate

• Water deeply during the first growing season, allowing the surface soil to dry between waterings.
• Once established, water during extended drought, especially while flowering.
• Use a light application of low-phosphorus native-plant fertiliser in spring if growth is weak; avoid heavy feeding.
• Apply a thin mulch over the root area, keeping it clear of the stem bases.
• In cold districts, grow in a pot with free-draining compost and move it into a bright, frost-free space for winter.

Pruning. Trim lightly after the main flowering flush to keep the shrub compact and encourage branching. Remove dead stems, but avoid cutting hard into old, leafless wood.

Spring

Plant after damaging frosts have passed in cooler districts; water thoroughly and mulch lightly.

Late spring

After the main flowering flush, shorten flowered shoots lightly and remove dead growth.

Summer

Check young plants and containers during dry weather; water deeply rather than giving frequent small amounts.

Late summer

Take semi-ripe cuttings from healthy, non-flowering shoots.

Autumn

Plant in mild, winter-rainfall climates while the soil is warm; move tender container plants under cover before frost.

Winter

Enjoy the flowers, check drainage after heavy rain and keep sheltered container plants only lightly moist.

• Use near paths or seating where the small winter and spring flowers can be seen closely.
• Mix with compact Australian native shrubs for an informal, fine-textured border.
• Plant among rocks and gravel with other shrubs needing sharp drainage.
• Grow in a container on a sunny patio where winter protection is practical.
• Include in a cutting garden for small flowering branches that soften arrangements.

Garden styles it suits: Australian native, Dry gravel garden, Mediterranean, Cottage garden, Low-maintenance and Small-space.

Plant it with: Waxflower, Correa, Westringia, Kangaroo paw, Dwarf lomandra and Native everlasting daisies.

Wildlife: The small flowers attract bees and other flower-visiting insects. Its branching evergreen growth provides modest shelter for small garden wildlife.

• Root rot in wet soil: improve drainage before planting, use a raised bed or container, and avoid watering already moist soil.
• Frost damage: choose a sheltered position in mild areas and overwinter containers under bright, frost-free cover where winters are colder.
• Sparse or woody growth: provide more sun and trim lightly after flowering rather than cutting hard into bare stems.
• Drought stress in pots: check the root ball regularly in hot weather and water thoroughly when it begins to dry.

Not known to be toxic to people, cats, dogs or horses, but reliable species-specific information is limited. No particular poisonous part is established; do not treat the leaves or flowers as edible.

• Geraldton wax (Chamelaucium uncinatum)

  Geraldton wax has much larger, waxy flowers and long, narrow, needle-like leaves, often with hooked tips; thryptomene has tiny oval leaves and much smaller flowers.

• Pink breath of heaven (Coleonema pulchellum)

  It also bears many small pink flowers, but its leaves are narrow, needle-like and strongly aromatic when rubbed, rather than the short oval leaves of thryptomene.

The species name saxicola means 'rock-dwelling', referring to its occurrence in rocky habitats.

Propagation. Take semi-ripe cuttings in late summer or early autumn and root them in a freely draining propagation mix with gentle humidity. Seed propagation is possible, but germination can be variable; cuttings preserve the characteristics of a selected plant.

Accepted botanical name

Thryptomene saxicola

Native range

Western Australia.

Sources: GBIF (CC BY 4.0) and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.