Yellow Star Grass
ExplorePlants
Yellow Star Grass
hypoxis hirsuta
Yellow Star Grass (Hypoxis hirsuta) is a charming, low-growing perennial wildflower native to the grasslands and open woodlands of North America. Often mistaken for a true grass due to its slender, blade-like leaves, this plant reveals its true botanical identity when it bursts into bloom. Its brilliant, star-shaped yellow flowers act as bright beacons close to the forest floor or tucked within prairie grasses, welcoming the warmth of the spring sun. This resilient little plant plays an essential role in its local ecosystem, supporting early-season native pollinators when few other flowers are active. It is highly valued in native plant gardening and prairie restoration projects for its hardy nature and cheerful appearance.
Habitat: Found in open woodlands, savannas, prairies, glades, and meadows, typically thriving in dry to moist, sandy or rocky soils.
Appearance
This small plant grows up to 30 centimeters tall, featuring narrow, bright green, grass-like leaves that are covered in fine, soft white hairs. Each plant produces several slender, hairy stalks terminating in clusters of star-shaped flowers. The flowers, about 1.5 to 2.5 centimeters across, consist of six bright yellow tepals surrounding a central cluster of yellow stamens. The undersides of the yellow tepals are often a contrasting greenish-yellow and are also covered in fine hairs.
KingdomPlantaePhylumTracheophytaClassLiliopsidaOrderAsparagalesFamilyHypoxidaceaeGenusHypoxis
Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Despite its name and grass-like foliage, Yellow Star Grass is a member of the Hypoxidaceae family, making it more closely related to lilies than true grasses.
The flowers do not produce any nectar; they lure in pollinators purely with the promise of pollen, effectively pulling off a floral trick.
The species name 'hirsuta' is derived from Latin, meaning 'hairy', which perfectly describes the fuzzy coating on its leaves and flower stems.
Special abilities
Ability
Solar-Activated Blooms
The flowers open only on sunny mornings and close during cloudy weather or by afternoon to protect their reproductive organs.
Ability
Hirsute Insulation
A dense covering of fine hairs on the leaves and stems reduces moisture loss from wind and deters crawling insect herbivores.
Ability
Fire-Resilient Corm
An underground bulb-like stem called a corm stores nutrients, allowing the plant to rapidly resprout after wildfires or severe droughts.
Measurements & details
- Length
- 10-30 cm
- Lifespan
- 3-10 years
Diet & Feeding
As a photosynthetic plant, it converts sunlight, water, and carbon dioxide into energy and organic compounds.
Primary Foods
- Sunlight
- Water
- Carbon dioxide
- Soil minerals
Ecological connections
mutualism
Sweat Bee
Lasioglossum pectorale
Pollinates the flowers while collecting pollen
eaten by
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Eastern Cottontail
Sylvilagus floridanus
Feeds on the grass-like foliage during spring
mutualism
Mason Bee
Osmia pumila
Pollinates the bright yellow blossoms
Traits
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Also known as
No aliases listed yet.
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Yellow Star Grass?
The easiest way to identify Yellow Star Grass is to use the Snappit nature identifier app.
How long is Yellow Star Grass?
10-30 cm
How long does Yellow Star Grass live?
3-10 years
What does Yellow Star Grass eat?
As a photosynthetic plant, it converts sunlight, water, and carbon dioxide into energy and organic compounds.
Where is Yellow Star Grass usually found?
Found in open woodlands, savannas, prairies, glades, and meadows, typically thriving in dry to moist, sandy or rocky soils.
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