White Mariposa Lily (Calochortus albus)

White Mariposa Lily

Calochortus albus

Delicate cup-shaped blooms glow like moonlit silk. Perennial bulbous flowering plant; common names: white mariposa lily, white globe lily.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; prefers bright morning sun with afternoon shade in hot summer climates
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Watering Water deeply when the top 2–3 cm of soil is dry; avoid waterlogging the underground bulbs
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Temperature Hardy to -10°C; tolerates cool spring temperatures, avoid prolonged heat above 30°C
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Characteristics

  • Leaf: Basal linear leaves up to 60 cm long, withering before flowering begins
  • Flower: White cup-shaped blooms with purple or yellow nectar guides at petal bases
  • Stem: Slender, upright, unbranched or sparsely branched
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Horticulturist's Insider Field Notes (No AI Fluff)

The Golden 'Finger Test' Rule

Never water on a strict calendar. Stick your index finger 2 inches into the soil. If it feels cool and damp, wait 2–3 days. If bone dry, water thoroughly until it drains from the bottom holes.

Empty the Saucer After 20 Minutes

The #1 houseplant killer is water sitting in the catch tray. Stagnant runoff water starves roots of oxygen and causes root rot.

Turn the Pot Every 2 Weeks

Houseplants naturally lean toward the nearest window light. Give the pot a quarter-turn biweekly to maintain balanced, symmetrical architecture.

Wipe the Dust Away

Dust on leaves acts like a heavy sunshade. Gently wipe broad foliage with a damp cloth monthly to maximize photosynthesis and air purification.

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Care Guide

Watering

Keep soil evenly moist during active growth and flowering

Fertilization

Apply diluted balanced fertilizer once at bulb emergence. Use low-nitrogen fertilizer to support bulb health rather than foliage growth

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle lightly around bulb bases in early spring; avoid direct contact with tender stems
Pruning
  • Remove spent flower stalks after blooming to redirect energy to bulb growth
  • Cut back fully browned foliage in late summer to tidy the planting area
  • Thin overcrowded bulbs every 3–4 years in autumn to maintain plant vigor
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Pet & Human Toxicity & Emergency Guide

⚠️ Toxic to Pets (Cats & Dogs)

Toxicity Warning: Veterinary toxicology registers White Mariposa Lily (Calochortus albus) as possessing biochemical compounds (such as insoluble oxalates, alkaloids, or saponins) that pose ingestion hazards to felines and canines.

Feline Ingestion Risks (Cats)

Oral pain, hypersalivation (excessive drooling), pawing at mouth, swelling of tongue or lips, vocalization, and vomiting.

Canine Ingestion Risks (Dogs)

Oral mucosal irritation, gagging, retching, lack of appetite, lethargy, diarrhea, and difficulty swallowing.

Immediate Emergency First-Aid

Do NOT induce vomiting without veterinary instructions! Carefully remove remaining plant pieces, gently rinse mouth with cool water, and monitor breathing.

🚨 Pet Ingestion Emergency? Instant Plant & Toxicity Scan

Chewed leaf or stem? Open PlantFun App to scan the plant, immediately verify the botanical species, and view ASPCA toxicity severity ratings & vet first-aid advice.

Emergency Plant Scan
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Troubleshooting & Common Plant Problems

Quick diagnostic guide for common care issues affecting White Mariposa Lily (Calochortus albus):

Yellowing Leaves

Most commonly caused by overwatering or poor drainage. Ensure topsoil dries out between waterings and check for root ventilation.

Brown or Crispy Leaf Tips

Low ambient humidity, hard tap water minerals, or direct midday sunburn. Increase humidity and use filtered water.

Drooping or Wilting Foliage

Indicates dehydration or root damage from prolonged waterlogging. Inspect soil moisture and root firmness.

Common Pests (Spider Mites, Aphids)

Dry indoor air encourages pests. Wipe leaves with a damp cloth and treat with insecticidal soap or neem oil.

🌿 Instant AI Plant Health Check

Take a photo of any leaf on PlantFun App to get instant diagnosis of diseases, pests, and custom care recovery steps.

Diagnose Leaf Free
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Propagation & Repotting Guide

  • Taking Cuttings: During active spring or summer growth, take a healthy 4–6 inch cutting just below a node using clean shears.
  • Rooting Medium: Place cuttings in fresh water or moist perlite mix in bright, indirect light; refresh water weekly.
  • Potting Up: Transplant into well-draining potting mix once roots reach 2 inches in length (typically 3–5 weeks).
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Seasonal Care Calendar

  • Spring & Summer (Active Growth): Water thoroughly as topsoil dries; apply diluted balanced fertilizer monthly; encourage steady growth.
  • Autumn (Transition): Gradually reduce watering frequency as daylight hours shorten; discontinue fertilization.
  • Winter (Dormancy): Water sparingly only when soil is mostly dry; protect from cold window drafts; keep in warm room.
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Frequently Asked Questions

How often should I water my White Mariposa Lily?

Water thoroughly when the top 1–2 inches of soil feel dry. In active growth (spring/summer), water every 1–2 weeks; reduce significantly in winter.

Where is the best indoor location for White Mariposa Lily?

Position in bright, filtered indirect light (e.g., near an east or south-facing window with sheer curtains). Avoid harsh direct midday sun.

Is White Mariposa Lily toxic to pets?

ASPCA: No known toxicity to cats

When should I repot my White Mariposa Lily?

Repot every 1–2 years in spring when roots outgrow the drainage holes or the soil depletes nutrients.

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Garden Uses & Culture

Culture: Symbolizes purity and delicate beauty in western US native plant landscaping

Usage: Ornamental garden plant, native wildflower restoration projects

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Every home has different pot sizes, humidity, and airflow. Take a photo on PlantFun App to calculate your exact watering countdown and access 24/7 AI diagnostic care!

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