Pencil Cactus (Euphorbia tirucalli)

Pencil Cactus

Euphorbia tirucalli

A striking, leafless succulent shrub that paints the landscape with its architectural, pencil-like green branches. Succulent shrub; other names: Pencil Tree, Firestick Plant.

Requires bright, direct sunlight for optimal growth and color expression.
0.5/week
Easy
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Plant Needs

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Sunlight Requires bright, direct sunlight for optimal growth and color expression.
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Watering Drought-tolerant; allow soil to dry out completely between waterings.
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Temperature Thrives in warm temperatures; protect from frost.
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Characteristics

  • Stems: Cylindrical, smooth, green, pencil-like branches that photosynthesize in place of leaves, exuding a toxic milky latex when broken;
  • Leaves: Minute, ephemeral leaves that drop early, leaving the plant largely leafless;
  • Flowers: Small, yellow-green cyathia clustered at the tips of the branches.
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Care Guide

Watering

Water thoroughly when the soil is completely dry, about once every 2 weeks.

Fertilization

Apply a diluted, balanced succulent fertilizer once.. Feed lightly during the active growing season.

Banana Peel Tea:Soak chopped banana peels in water for 24 hours, strain, and dilute 1:1 with water. Apply to soil to support root health. Avoid using too frequently to prevent salt buildup.
Pruning
  • Wear heavy gloves and eye protection before pruning due to the highly toxic, pressurized sap;
  • Prune to control size or remove dead/damaged branches;
  • Wash pruning tools thoroughly with soapy water immediately after use.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Toxic per ASPCA. Ingestion causes vomiting, oral irritation, and gastrointestinal distress; sap causes severe dermal and ocular irritation.

Humans: Highly toxic milky sap (latex) causes severe skin irritation, blistering, and extreme eye pain or temporary blindness upon contact.

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Garden Uses & Culture

Culture: In Western landscaping, it is highly valued in xeriscaping and modern architectural garden designs for its striking, minimalist silhouette.

Usage: Ornamental landscaping, drought-tolerant gardens, barrier hedging, and indoor architectural specimen.