Does it need full sun?

Yes, it thrives best in full sun to light shade.

It is not frost hardy and requires protection in cold climates.

Plant guide

Cape Hyacinth.

Ornithogalum thyrsoides

Pronounced or-nih-THOG-uh-lum thir-SOY-deez

Also known as African Wonder Flower, Cape-lily, Chincherinchee, Christmas-lily, Common Chincherinchee, Common Chink, Port Lincoln-lily, Wonder Flower

Ornithogalum thyrsoides — Photo by Stuart Cable (CC BY) via gbif

The Cape Hyacinth is a charming bulbous plant native to South Africa that produces dense spikes of star shaped flowers. It is a wonderful addition to sunny borders or containers where it can show off its bright white or creamy blooms. These plants prefer a well drained spot to thrive throughout their growing season.

At a glance

Care level: Moderate
Plant type: Bulbous perennial
Light: Full sun to partial shade
Indoor light: bright-indirect
Water: Every 5 to 10 days
Mature size: 45 cm tall
Growth rate: medium
Hardiness: USDA 8 to 10
Bloom time: Late spring to early summer

Care

Plant your bulbs in well draining soil to prevent rot during their dormant period. Keep the soil consistently moist while the plant is actively growing and flowering. Watch for yellowing leaves as the plant enters dormancy, which is a natural part of its cycle.

Watering: Keep the soil moist but not waterlogged during the active growing season.
Feeding: Apply a balanced liquid fertilizer once a month during the growing phase.
Pruning: Remove spent flower stalks after blooming to encourage bulb energy storage.
Repotting: Repot only when the bulbs become too crowded in their container.
Soil: Sandy, well drained soil
Soil pH: Neutral to slightly acidic
Temperature: 5 to 25°C
Humidity: 40 to 60%
Drought tolerance: moderate
Lifespan: Perennial bulb, typically 3 to 5 years with proper care.
Fragrance: light
Deer and rabbits: moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Bulbs becoming crowded and pushing each other out of the soil.
Noticeable decline in flower production.

Safety

People: The plant contains calcium oxalate crystals and cardiac glycosides that are poisonous to humans and pets.
Pets: This plant is toxic to cats and dogs if ingested.
Children: Keep this plant away from children as the bulbs are easily mistaken for onions and are highly toxic.
Contact allergens: Handling the bulbs or sap can cause skin irritation or dermatitis in sensitive individuals.
Airborne allergens: There are no significant reports of airborne respiratory allergens for this species.
Edibility: All parts of this plant are toxic if ingested and can cause severe gastrointestinal distress.

How to identify it

Dense spikes of star shaped flowers
Bright white or creamy white petals
Basal rosette of strap shaped leaves
Bulbous perennial growth habit

Height: 0.3 to 0.45m
Spread: 0.15 to 0.2m
Leaves: green, deciduous
Flowers: white, cream, 2 to 4cm

Common problems

Bulb rot — Fungal decay caused by overly wet or poorly draining soil conditions.
Aphids — Small insects that cluster on flower buds and suck plant sap.

Growing it

Propagation: division, seed
When to plant: autumn
Overwintering: In cold regions, dig up the bulbs after the foliage yellows and store them in a cool, dry place until spring. Ensure they are kept in a breathable medium like peat moss.
In containers: It grows very well in containers, provided the pot has excellent drainage and is at least 6 inches deep.

Bulb offsets

Carefully lift the bulb clumps after the foliage has died back.
Gently separate the small bulblets from the parent bulb.
Replant the offsets in well draining soil at the appropriate depth.

Group these bulbs with low growing groundcovers that can hide the foliage as it dies back after flowering.

Grows well with

Freesia — They share similar moisture and light requirements for spring displays.
Bluebell — They provide a nice color contrast when planted in mixed bulb beds.

Keep away from

Hostas — Hostas prefer more shade and moisture than this sun loving bulb.

Similar species

Star of Bethlehem — It is a close relative with a similar star shaped flower structure.

Science

Family: Asparagaceae
Genus: Ornithogalum
Order: Asparagales
Class: Liliopsida
Native range: South Africa, specifically the Cape region.
Conservation: This species is not currently listed as threatened or endangered in its native range.

It grows in sandy, well drained soils and relies on seasonal rains for its growth cycle.

Value to wildlife: early season nectar source
Pollinators: bees, beetles
Uses: cut flower, container planting, rock garden, border accent

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 7/9
Temperature: 6/9
Moisture: 4/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?: Yes, it thrives best in full sun to light shade.
Is it hardy?: It is not frost hardy and requires protection in cold climates.

Where the name comes from

The genus name Ornithogalum is derived from the Greek words ornithos, meaning bird, and gala, meaning milk. The specific epithet thyrsoides refers to the thyrse, or cluster, shape of the flower head.

Good to know

It is a popular choice for wedding bouquets due to its long vase life.
The flowers can remain fresh for up to 3 weeks after being cut.
It is native to the Cape region of South Africa.
The genus name comes from the Greek words for bird and milk.

Is your cape hyacinth looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.