Treasure flower

Gazania rigens. Family Asteraceae. Perennial.

Also called Gazania, Trailing gazania.

Treasure flower is a low, spreading South African perennial grown for its large, bright daisies and tolerance of heat, drought and coastal exposure. It is evergreen in frost-free climates but usually grown as an annual in colder regions. Its flowers open best in direct sunshine and close at night or in dull weather.

Hardiness

USDA zones 9a to 11b

UK hardiness: H3 (half hardy, -5 to 1°C)

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Grows outdoors in the shaded zones. Select a zone to see what else grows there.

Treasure flower
Photo: Nicola van Berkel
Treasure flower
Photo: Nicola van Berkel
Treasure flower
Photo: YvettevWijk

At a glance

Sun
Full sun; shade reduces flowering and keeps flowers closed.
Water
Low once established. Water young plants regularly, then let the soil dry between thorough waterings; containers need more frequent attention.
Soil
Well-drained sandy, gritty or gravelly soil; tolerates poor soil and coastal conditions but dislikes wet clay and winter waterlogging.
Height
0.5-1 ft (0.15-0.3 m)
Spread
1-2 ft (0.3-0.6 m)
Flowers
Late spring to autumn, sometimes longer in frost-free climates. The species usually has yellow to orange daisies, often with dark markings near the petal bases; garden selections and hybrids offer additional colours.
Foliage
Evergreen. Narrow to spoon-shaped leaves, sometimes lobed, with green or grey-green upper surfaces and white-felted undersides.
Growth
Moderate to fast in warm weather.
Care needed
Low

The year at a glance

  • Pollinators
  • Drought tolerant
  • Heat tolerant
  • Low allergen
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Flowers
Plant

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

Difficulty
Easy
Toughness
Fairly tough

Will it suit your garden?

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

Full sun is 6 or more hours of direct sun a day, part shade 3 to 6 hours, shade under 3.

How it grows

  1. Planting day

    0.7 ft (0.22 m)

    full size

About 2 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.

Good to know

Cats and dogs
Safe
Invasive in
Australia
In the garden
Spreads vigorously: plan to contain it.
Growth rate
Fast

Care

Jobs through the year

WaterMay, Sep, every 14 days
Water established outdoor plants only when soil is dry; water new plants more frequently.
WaterJun–Aug, every 10 days
Water deeply during dry spells, letting soil dry between waterings; pots need more frequent checks.
WaterJan–Apr, Oct–Dec, every 21 days
For frost-free overwintered pots only, water lightly if nearly dry; never leave them standing in water.
FeedMay
Apply a light balanced feed only if growth is weak.
MulchMay
Use a thin gravel mulch around plants rather than moisture-retentive organic material.
DeadheadMay–Oct, every 7 days
Remove faded flower stems at their bases.
PruneApr
Trim damaged foliage and straggling stems on successfully overwintered plants.
ProtectSep–Oct
Move pots into bright, frost-free shelter before frost; otherwise grow as a disposable summer annual.
  • Plant after frost danger has passed, leaving room for the spreading stems.
  • Water at soil level and let the surface dry before watering again.
  • Feed sparingly; use a light application of balanced fertiliser in spring only if growth is weak.
  • Use gravel mulch rather than moisture-holding mulch around the crowns.
  • Move pots into a bright, frost-free shelter before winter in cold regions.

Pruning. Remove spent flower stems at their base to keep plants tidy and reduce seed production. In spring, trim frost-damaged leaves and straggling stems back to healthy growth.

Through the year

Early spring
Sow seed under cover in cold climates, providing warmth and strong light.
Spring
Trim overwintered plants and check that crowns have not rotted.
Late spring
Harden off young plants and plant outside after the last frost.
Summer
Remove faded flowers and water containers when their compost dries.
Late summer
Take non-flowering basal cuttings if you want to preserve a particular plant.
Autumn
Shelter pots before frost, or remove plants being grown as annuals.
Winter
Keep sheltered plants bright and barely moist; protect outdoor plants from persistent wet.

In the garden

  • Edge sunny paths and raised beds with a low band of bright flowers.
  • Plant among gravel and rocks with compact succulents for a drought-tolerant display.
  • Use in sunny containers with other plants that prefer dry conditions.
  • Cover small, well-drained coastal banks where escape into nearby natural vegetation is not a concern.

Garden styles it suits: Mediterranean, Dry gravel garden, Desert / xeriscape, Coastal, Hot border and Small-space.

Plant it with: Lavender, Santolina, Blue fescue, Rosemary, Stonecrop and Ice plant.

Wildlife: Open flowers provide pollen and nectar for bees and other visiting insects. Single-flowered forms offer easier access than heavily doubled selections.

Problems to watch for

  • Root or crown rot in wet soil: improve drainage, reduce watering and discard badly rotted plants.
  • Aphids on tender growth: wash them off with water or use insecticidal soap according to the label.
  • Slugs and snails damaging young plants: remove hiding places, hand-pick at dusk or use an approved iron-phosphate bait.
  • Few flowers or flowers staying shut: move plants into full sun; closed blooms during cloudy weather are normal.

Safety

Not known to be toxic to cats, dogs, horses or people. No part is generally recognised as poisonous, but it is not an edible plant, and eating substantial amounts may cause stomach upset.

Where it spreads. Gazania rigens and closely related garden gazanias can escape cultivation and spread aggressively in coastal southern Australia, particularly Western Australia, South Australia and Victoria. It is also naturalised in parts of coastal California. Identification within garden gazanias can be difficult; check local weed guidance before planting near dunes, coastal scrub or reserves.

Easily confused with

  • Clumping gazania (Gazania linearis)

    Usually forms tighter basal clumps with long, narrow leaves rather than the spreading, leafy stems typical of Gazania rigens. Garden hybrids can blur this distinction.

  • African daisy (Osteospermum ecklonis)

    Usually grows taller and bushier, with broader, often toothed leaves that lack the conspicuously white-felted undersides of gazania.

  • Livingstone daisy (Cleretum bellidiforme)

    Has fleshy leaves covered with sparkling bladder-like cells and many narrower petals; gazania has felt-backed leaves and broader ray florets.

The name

Gazania honours the Greek scholar Theodorus Gaza, while rigens means stiff or rigid.

Propagation. Sow seed in warmth in early spring, or take basal cuttings in late summer. Rooted portions of spreading clumps can be separated in spring. Seedlings from named selections or hybrids may differ from the parent.

Checked against open data

Accepted botanical name
Gazania rigens
Native range
Cape Provinces, KwaZulu-Natal, Mozambique, Northern Provinces and Swaziland.

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

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