Asparagaceae
Sun Star (Ornithogalum dubium) Care Guide
Ornithogalum dubium
Give the sun star bright light, water regularly during active growth while letting the topsoil dry between waterings, and cut back sharply once the foliage yellows and the bulb goes dormant in summer.
Every 7 days
Bright indirect
12° - 24°C
30% - 50%
Categories
What is Sun Star?
Sun Star (Ornithogalum dubium) is a easy-care plant from the Asparagaceae family. Ornithogalum dubium, popularly known as the sun star or orange star plant, is a bulbous perennial native to South Africa prized for its clusters of vivid orange to yellow star-shaped flowers held above strap-like leaves. A favorite of florists and potted gift plants, it blooms from late winter throu...
Sun Star grows up to 40cm, spread of 30cm, watering every 7 days, 12°C – 24°C, 30–50% humidity. It is suitable for indoor environments and not safe for pets.
Unlike many tropical plants, Sun Star tolerates watering mistakes. Best for beginners. Without precautions, ingestion can cause irritation in pets. Keep out of reach of cats and dogs. Without adequate drainage, root rot can develop within 14 days.
How to Care for Sun Star?
TLDR: Sun Star needs Bright indirect, watering every 7 days, and temperatures between 12-24°C with 30-50% humidity.
How Often Should You Water Sun Star?
Water when the top 2-3 cm of soil feels dry, keeping the mix evenly moist but never soggy; reduce watering almost completely during summer dormancy to prevent bulb rot.
How Much Light Does Sun Star Need?
Place in bright light with a few hours of direct sun daily; a south- or west-facing windowsill works well indoors.
What Is the Best Soil for Sun Star?
Use a light, fast-draining mix, such as a cactus or succulent blend, in a pot with drainage holes so the bulb never sits in wet soil.
What Pot Should You Use for Sun Star?
A shallow terracotta pot with generous drainage holes suits the shallow root system and lets excess moisture evaporate quickly.
Care Schedule
Fertilize
Every 30 days
Repot
Every 365 days
What Is Sun Star and Where Does It Come From?
Ornithogalum dubium, popularly known as the sun star or orange star plant, is a bulbous perennial native to South Africa prized for its clusters of vivid orange to yellow star-shaped flowers held above strap-like leaves. A favorite of florists and potted gift plants, it blooms from late winter through spring before entering a summer dormancy.
How to Propagate Sun Star?
Offset Division
Only separate offsets that already have their own roots for the best survival rate; avoid disturbing bulbs while actively flowering.
- 1 Wait until the bulb is dormant and offsets (bulblets) are at least 2-3 cm wide
- 2 Carefully lift the parent bulb and gently separate the offset bulbs by hand
- 3 Let cut surfaces callus for a day in a dry, shaded spot
- 4 Plant offsets in well-draining soil with the tip just below the surface
- 5 Water lightly and keep in bright, indirect light until new growth appears
Materials needed:
How Big Does Sun Star Grow?
TLDR: Sun Star can reach up to 40cm tall with Slow growth rate.
Max height
40cm
Spread
30cm
Growth rate
Slow
Foliage
Deciduous
Warning: Toxic Plant
This plant can be toxic if ingested. Keep out of reach of:
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Sun Star?
TLDR: Sun Star is susceptible to 8 known diseases. Monitor regularly for early detection.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Spider Mites
Spider mites are tiny arachnids (less than 1/20 inch long) related to spiders and ticks that feed on plant sap. They thrive in hot, dry conditions and can cause significant damage to ornamental and vegetable plants. During severe infestations, crop losses can reach 14% or higher as these pests disrupt vital plant processes including photosynthesis, carbon dioxide absorption, and transpiration.
Thrips
Thrips are tiny cigar-shaped insects (1/25-inch long) that damage plants by sucking plant juices and scraping at fruits, flowers, and leaves. With over 6,000 species and rapid reproduction (lifecycle as short as 14 days), they can quickly infest plants and transmit viruses like tomato spotted wilt virus.
Mealybugs
Mealybugs are small, soft-bodied insects covered with a white, waxy, cottony material. They are common pests of houseplants and outdoor plants in mild climates. These sap-sucking insects feed on plant tissue, causing damage, stunted growth, and can lead to plant death if left untreated. They produce sticky honeydew which attracts sooty mold.
Meaning & Symbolism
Its star-shaped blooms are associated with hope, purity and new beginnings, echoing folklore tied to the broader Star of Bethlehem group of plants.
Fun Facts
The genus name Ornithogalum comes from Greek words meaning bird and milk, a nod to the milky-white sap of some species.
Sun star flowers only open fully in bright sunlight and close on cloudy days or at night.
It is a popular florist bulb often forced into bloom for gift pots around the world.
Frequently asked questions
Is Ornithogalum dubium toxic to pets?
Why did my sun star stop flowering?
How often should I water a sun star?
Can I grow Ornithogalum dubium outdoors?
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Field Maple | Easy | Bright indirect | 14d | ✓ |
| Silver Birch | Easy | Direct sun | 14d | ✓ |
| Common Blanketflower | Easy | Direct sun | 10d | ✓ |
| Cushion Bush | Easy | Direct sun | 14d | ✓ |
