Poinsettia (Euphorbia pulcherrima)

Poinsettia

Euphorbia pulcherrima

Crimson bracts glow like winter embers, a festive holiday staple. Evergreen shrub; common name: Christmas flower.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; tolerate short periods of direct morning sun, but avoid harsh midday sun which can scorch bracts.
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Watering Water thoroughly when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot and leaf drop.
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Temperature Thrives at 18–22℃; avoid drafts and temperatures below 12℃, which will cause bract and leaf drop.
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Characteristics

  • Leaf: Dark green, ovate to lanceolate, with smooth or slightly serrated margins; showy upper bracts (often misidentified as flowers) are bright red, pink, or white.
  • Flower: Tiny yellow cyathia clustered at the center of bract whorls; true flowers are inconspicuous.
  • Stem: Woody, branching, with milky latex sap that may irritate skin.
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Care Guide

Watering

Keep soil evenly moist; reduce watering if growth slows in late summer

Fertilization

Diluted balanced liquid feed every 2 weeks. Stop fertilizing in early autumn to trigger bract color development in response to short daylight hours.

Eggshell powder top dressing:Grind dried eggshells to a fine powder; sprinkle 1 teaspoon per pot every 2 months and mix lightly into the topsoil to avoid pest infestations and odor.
Pruning
  • Pinch back stem tips in spring to encourage bushy, compact growth.
  • Remove yellowing bracts and leaves promptly to maintain appearance and improve airflow.
  • Trim leggy stems to 15–20 cm in late spring to reset growth for the next flowering season.
  • Cut off any damaged or diseased branches to prevent spread of infection.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, drooling, and mild oral irritation.

Humans: Ingestion may cause mild gastrointestinal upset; latex sap can irritate sensitive skin.

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Garden Uses & Culture

Culture: Associated with Christmas in Western cultures; symbolizes joy, celebration, and seasonal warmth.

Usage: Holiday ornamental plant; cut bracts are used in festive floral arrangements.