Splendid Mariposa Lily

calochortus splendens

Also known as: ["Mariposa Lily","Splendid Calochortus"]

Family: Liliaceae Genus: Calochortus Category: Flowers

Overview

A perennial bulbous plant native to North America, known for its striking, tulip-like flowers with three broad petals.

Benefits & Perks

["long-flowering","wildlife attractant (bees, butterflies, birds)","aesthetic foliage"]

Botanical Classification

Phylum: Magnoliophyta
Class: Liliopsida
Order: Liliales
Family: Liliaceae
Genus: Calochortus
Botanical Name: Calochortus splendens

Plant Characteristics

Basic Information
  • Category: Flowers
  • Suitable Location: rock garden or raised bed with excellent drainage
  • Suitable For:
    Collectors & Enthusiasts Outdoor Landscapers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"5–35°C"}
  • Hardiness: {"zones":"7–9"}
  • Misting: rarely required, only if ambient humidity is very low
  • Drainage: Fast-draining
  • Soil Type: Well-draining, sandy loam with some organic matter; avoid heavy clay soils.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: After flowering; as needed to remove dead or diseased foliage.
  • Pruning Intensity: Light pruning
Care Details

Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily) during active growth; partial shade during extreme heat in summer to prevent scorching.

Sunlight Tolerance Tips:
Acclimate plants gradually to full sun if moved from shade; protect from intense midday sun in hot climates; ensure good air circulation to prevent heat stress.

Warning Signs: Yellowing leaves, root rot, or failure to flower can indicate poor drainage or incorrect soil conditions.

Care Requirements

Care Difficulty
moderate

moderate

Sunlight

full sun to light shade

Rotate pot weekly for even growth; use sheer curtains to filter intense summer sun; avoid placing in drafty areas.

Watering

every 7–10 days during active growth, reduce in winter

Water thoroughly but infrequently to encourage deep root growth; allow soil to dry out partially between waterings; avoid overwatering, especially during dormancy.

Soil

well-draining, sandy loam with some organic matter

pH: Slightly acidic to neutral (pH 6.0–7.0)

Use a cactus or bulb-specific mix; ensure pots have drainage holes; avoid overwatering to prevent soil compaction.

Temperature

Prefers cool to moderate temperatures (50–75°F or 10–24°C); tolerates mild frosts but avoid prolonged freezing; thrives in Mediterranean-like climates with dry summers.

Avoid sudden temperature fluctuations; protect from cold drafts; maintain consistent temperatures during active growth.

Fertilizing

every 4–6 weeks during spring and summer

Apply fertilizer after watering to prevent root burn; stop feeding when plant enters dormancy; use a low-nitrogen formula to avoid excessive foliage growth.

Propagation

Methods

Seed propagation is most common; division of bulbs can also be done after flowering when bulbs are mature.

Step-by-Step Propagation Guide
  1. Clean and prepare seeds or bulbs.
  2. Plant at appropriate depth in chosen medium.
  3. Maintain consistent moisture and warmth.
  4. Transplant when roots are well-established.

Best Time: Spring, just after flowering when bulbs are actively growing; seeds can be sown in late summer or early fall for overwintering.

Environment

Warm (65–75°F or 18–24°C), humid environment with bright indirect light; protect from direct sun and strong winds.

Medium

Well-draining seed starting mix or bulb fiber for seeds; coarse sand or perlite for bulb division.

Hormone

Not typically required for seeds; rooting hormone can be used for bulb cuttings to encourage root development.

Timeline

Seeds may take 1–3 years to germinate and establish; bulb division can produce new plants in 1–2 growing seasons.

Tools Needed

Sharp, sterile knife or scissors, small pots, seed trays, rooting hormone (optional), misting bottle.

Quick Tips

Sow seeds shallowly; keep bulbs slightly moist but not waterlogged; label new plants for tracking progress.

Pruning & Repotting

Pruning Guide
Method

Cut flower stalks back to the base; trim damaged leaves to the base of the plant; avoid cutting into healthy bulb tissue.

Pruning Plan

Minimal pruning required; focus on removing spent flower stalks to encourage bulb development; occasional removal of yellowing or damaged leaves.

Tools

Clean, sharp pruning shears or scissors.

Checklist

Sterilize tools before use; prune after flowering; remove only dead or damaged parts; clean up debris to prevent disease.

Repotting Guide
Best Season

Late winter or early spring, before new growth emerges.

Pot Size

Choose a pot one size larger than the current one, ensuring it has drainage holes.

Method

Gently remove the plant from its pot; loosen and trim any dead or crowded roots; replant in fresh, well-draining soil with bulbs slightly above the soil surface.

Suggestions

Repot every 2–3 years or when bulbs become crowded; best when the plant is dormant or just before active growth begins.

Checklist

Use fresh soil mix; ensure good drainage; position bulbs correctly; water lightly after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture before watering; water deeply at the base; ensure proper drainage; adjust frequency with seasons.

How to Apply Water Properly

Water directly at the base of the plant, ensuring moisture reaches the root zone; water early in the morning to minimize evaporation and fungal issues; ensure excess water drains away to prevent root rot.

Pro Tip: Use a watering can with a long spout to deliver water precisely to the root zone without wetting foliage.
Watering Schedule Tips

Water deeply once every 7–10 days during active growth in spring and early summer; reduce frequency to once every 3–4 weeks in late summer and fall; avoid watering in winter unless soil is extremely dry.

Soil Improvement

Add perlite or coarse sand to improve drainage; incorporate compost for organic matter; ensure soil is loose and friable.

Temperature Stress Management
Signs of Temperature Issues

Chlorosis or wilting in excessive heat; stunted growth or bud drop in cold stress; leaf burn or scorch in intense sunlight.

Cold Stress

Low temperatures slow metabolic processes, causing reduced growth and potential frost damage to tender tissues; prolonged cold can lead to root rot if soil remains wet.

Solution: Provide winter protection with mulch or frost cloth; ensure soil is well-drained to prevent waterlogging; move potted plants to a sheltered location if temperatures drop below freezing.

Hot Stress

Excessive heat can cause dehydration, leaf scorch, and premature flowering; high temperatures combined with intense sunlight may lead to wilting and reduced vigor.

Solution: Provide afternoon shade during peak heat; increase humidity with misting or a pebble tray; water deeply in the early morning to keep roots cool.

Fertilizing Guide
Fertilizing Checklist

Use diluted fertilizer; apply during growing season only; avoid contact with foliage; rinse tools after use.

Fertilizing Method

Use a balanced, water-soluble fertilizer diluted to half strength; fertilize once a month during active growth (spring and early summer); avoid fertilizing in late summer and winter.

Common Problems & Solutions

Yellowing leaves in Calochortus splendens may indicate nutrient deficiencies, overwatering, or pest infestations, affecting photosynthesis and overall plant health.

Wilting in Calochortus splendens can be caused by water stress, either due to drought or overwatering, leading to reduced turgor pressure and potential plant death if not addressed.

Leaf spots on Calochortus splendens may be caused by fungal or bacterial pathogens, leading to reduced photosynthetic efficiency and potential defoliation if severe.

Rotting, particularly root or bulb rot, can occur in Calochortus splendens due to excessive moisture or fungal infections, leading to decay of plant tissues and eventual plant death.

Toxicity Warning

Cats
Non-toxic

Calochortus splendens is not known to exhibit toxic properties to cats.

⚡ Toxic If:

not applicable

No specific safety precautions are required for cats around this plant.
Dogs
Non-toxic

Calochortus splendens is not known to exhibit toxic properties to dogs.

⚡ Toxic If:

not applicable

No specific safety precautions are required for dogs around this plant.
Humans
Non-toxic

Calochortus splendens is not known to exhibit toxic properties to humans.

⚡ Toxic If:

not applicable

No specific safety precautions are required for handling or growing this plant.

Frequently Asked Questions

Q: How often should Calochortus splendens be watered?

A: Water sparingly during the growing season, allowing the soil to dry between waterings. Reduce watering significantly during dormancy.

Q: Does Calochortus splendens require full sun?

A: Yes, it thrives in full sun to partial shade, with at least 6 hours of direct sunlight daily.

Q: Can Calochortus splendens be grown indoors?

A: It is primarily an outdoor plant, but can be grown in containers with excellent drainage and moved indoors during extreme weather.

Quick Reference
Family: Liliaceae
Care: moderate
Light: full sun to light shade
Water: every 7–10 days during activ
Suitable For: ["collectors/enthusiasts","outdoor landscapers","wildlife supporters (attracts bees, butterflies, birds)"]
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