Jacobean Lily (Sprekelia formosissima)

Jacobean Lily

Sprekelia formosissima

Its crimson trumpet blooms burn like a tropical torch. Bulbous flowering perennial; common names: Jacobean Lily, Aztec Lily.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires bright direct sunlight for 6–8 hours daily to encourage blooming; tolerate partial shade during hot midday hours
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Watering Water thoroughly during active growth, allowing the top 2 cm of soil to dry between waterings to prevent bulb rot
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Temperature Thrives in 18–25°C during growing season; tolerate down to 10°C during dormancy, avoid frost exposure
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Characteristics

  • Leaf: Linear strap-like dark green foliage, emerges after flowering finishes
  • Flower: Trumpet-shaped bright crimson red bloom, 10–15 cm long, single per stem
  • Bulb: Underground tunicate bulb that enters dormancy in cool, dry periods
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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 consistently moist but not waterlogged during active growth

Fertilization

Diluted balanced liquid feed every 2 weeks. Avoid fertilizing during dormancy to prevent bulb damage

Eggshell powder top dressing:Crush dried eggshells into fine powder, sprinkle 1 teaspoon around the bulb base, and water gently to release calcium into the soil
Pruning
  • Remove spent flower stalks after blooming to redirect energy to bulb growth
  • Trim fully browned foliage during dormancy to maintain a tidy appearance
  • Remove damaged or rotting bulb scales when repotting in early spring
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Pet & Human Toxicity & Emergency Guide

⚠️ Toxic to Pets (Cats & Dogs)

Toxicity Warning: Veterinary toxicology registers Jacobean Lily (Sprekelia formosissima) 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.

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Troubleshooting & Common Plant Problems

Quick diagnostic guide for common care issues affecting Jacobean Lily (Sprekelia formosissima):

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.

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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 Jacobean 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 Jacobean 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 Jacobean Lily toxic to pets?

ASPCA confirmed toxic; contains lycorine, causing vomiting, diarrhea, abdominal pain, and lethargy

When should I repot my Jacobean 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 passion and vibrant beauty in floral arrangements

Usage: Ornamental garden plant, cut flower for bouquets and floral displays

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