
Rio Grande Copper Lily
zephyranthes tubispatha
The Rio Grande Copper Lily (Zephyranthes tubispatha) is a fascinating and beautiful bulbous perennial belonging to the amaryllis family. Often referred to generally as a rain lily, this diminutive plant has mastered the art of timing, spending much of the year entirely dormant beneath the soil as a small bulb. It waits patiently for the heavy, soaking rains of late summer and early fall. Once the dry earth is drenched, the plant springs to life, sending up delicate, striking blooms seemingly overnight. These fleeting flowers add sudden, vivid splashes of color to otherwise unremarkable pastures, grasslands, and roadsides across the southern United States, the Caribbean, and parts of South America. Because they only bloom for a short window following storms, encountering a field dotted with Rio Grande Copper Lilies is a delightful and ephemeral reward for nature lovers and botanists alike. If you want to identify Rio Grande Copper Lily in the wild, use the Snappit app.
Habitat: Found primarily in open, sun-drenched habitats such as grasslands, pastures, and disturbed roadsides, thriving in well-draining soils that experience periodic heavy rainfall.
Appearance
This species produces a single, solitary flower on a slender, leafless stalk that typically reaches 10 to 25 centimeters in height. The funnel-shaped blossom is highly distinctive, featuring petals that are deeply colored with a coppery-orange to reddish-brown hue on the outside, while the interior reveals a contrasting, bright golden-yellow. The plant's leaves, when present, are narrow, grass-like, and green, often emerging either just before or alongside the striking flowers.

Category
PlantsRarity
Common
Danger
1/5 ยท Very low
Snaps
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Interesting facts
The Rio Grande Copper Lily is famously known as a rain lily because its blooms magically appear as if out of nowhere just days after a heavy downpour.
The genus name Zephyranthes translates to flower of the west wind, referring to Zephyrus, the Greek god of the west wind who brings light spring and summer rains.
To deter herbivores, the bulbs of this plant contain toxic phenanthridine alkaloids, a chemical defense common in the amaryllis family.
Special abilities
Rain-Triggered Blooming
The plant remains dormant during dry spells and rapidly produces flowers two to three days after a heavy rainstorm.
Geophytic Dormancy
It utilizes an underground bulb to store water and nutrients, allowing it to survive extreme heat and prolonged drought.
Nyctinastic Movement
The flowers open wide in bright sunlight and close up during the night or on heavily overcast days to protect their pollen.
Measurements & details
- Length
- 10-25 cm
- Lifespan
- 3-15 years
Diet & Feeding
Like most plants, the Rio Grande Copper Lily creates its own food through photosynthesis using sunlight, water, and atmospheric carbon dioxide.
Primary Foods
- Sunlight
- Water
- Soil nutrients
- Carbon dioxide
Ecological connections
Western Honey Bee
Apis mellifera
Pollinates the flowers while foraging for nectar
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Cloudless Sulphur
Phoebis sennae
Visits the blooms for nectar, assisting in pollination
Feral Pig
Sus scrofa
May dig up and consume the bulbs despite their toxicity
Traits
No trait badges are assigned for this object yet.
Also known as
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Collections
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Safety
Danger
1/5 ยท Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Rio Grande Copper Lily?
The easiest way to identify Rio Grande Copper Lily is to use the Snappit nature identifier app.
How long is Rio Grande Copper Lily?
10-25 cm
How long does Rio Grande Copper Lily live?
3-15 years
What does Rio Grande Copper Lily eat?
Like most plants, the Rio Grande Copper Lily creates its own food through photosynthesis using sunlight, water, and atmospheric carbon dioxide.
Where is Rio Grande Copper Lily usually found?
Found primarily in open, sun-drenched habitats such as grasslands, pastures, and disturbed roadsides, thriving in well-draining soils that experience periodic heavy rainfall.
Snap Map
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Recent Snaps
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Where to spot

Louisiana, US
Fort St. Jean Baptiste State Historic Site
You might spot Heavenly Bamboo, Rio Grande Copper Lily, and Ballmoss.
View guide โ

Louisiana, US
Natchitoches Historic District
You might spot Heavenly Bamboo, Rio Grande Copper Lily, and Ballmoss.
View guide โ

Louisiana, US
Rebel State Historic Site
You might spot Heavenly Bamboo, Rio Grande Copper Lily, and Ballmoss.
View guide โ
















