Crown of Thorns (Euphorbia milii)

Crown of Thorns

Euphorbia milii

A resilient succulent shrub armed with thorns, bearing bright bracts that defy the harshest sun. Other names: Christ plant.

Full sun to partial shade; requires bright light for optimal blooming.
1/week
Easy
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Plant Needs

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Sunlight Full sun to partial shade; requires bright light for optimal blooming.
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Watering Drought tolerant; allow the soil to dry out completely between waterings.
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Temperature Prefers warm temperatures and is not frost-tolerant.
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Characteristics

  • Leaves: Obovate to spatulate, bright green, mostly found near the growing tips, naturally dropping from older stems;
  • Flowers: True flowers are tiny and yellow, surrounded by showy, petal-like cyathial bracts in red, pink, or white;
  • Stems: Fleshy, grayish-brown, heavily armed with sharp, stout grayish spines;
  • Sap: Produces a copious, milky white latex when cut or damaged.
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Care Guide

Watering

Water thoroughly when the top inch of soil is completely dry.

Fertilization

Apply a balanced liquid fertilizer diluted to half strength.. Avoid over-fertilizing, which can cause excessive foliage growth at the expense of flowers.

Banana Peel Tea:Soak chopped banana peels in water for 48 hours. Strain and dilute 1:1 with water. Apply to the soil, avoiding direct contact with the stem to prevent rot. Discard solids in compost to avoid attracting pests.
Pruning
  • Safety First: Always wear thick, puncture-resistant gloves and eye protection due to the toxic, irritating sap and sharp thorns;
  • Timing: Prune in early spring to maintain shape and encourage branching;
  • Technique: Remove dead, damaged, or crossing branches at the base using sterilized pruning shears;
  • Cleanup: Wash tools immediately after use to remove the sticky latex.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Toxic per ASPCA; exposure to sap causes severe dermal and ocular irritation, and ingestion leads to gastrointestinal distress.

Humans: Highly toxic and irritating; the milky sap causes severe skin inflammation, eye damage, and gastrointestinal distress if ingested.

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Garden Uses & Culture

Culture: In Christian tradition, the plant is widely associated with the crown of thorns worn by Jesus Christ during the crucifixion, symbolizing endurance, suffering, and sacrifice.

Usage: Popular as an ornamental houseplant, a barrier hedge in tropical climates, and a staple in xeriscape gardens.