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Pencil Cactus

Euphorbia tirucalli

houseplant

Pencil Cactus is a tall, architectural houseplant with thin, pencil-like green stems that may develop red or orange hues in bright light. Despite its name, it's not a true cactus but a succulent euphorbia that brings modern, minimalist style to interiors. The plant grows upright and can reach substantial heights, making it ideal for corner spaces and adding vertical interest.

Pencil Cactus

Common Problems

Select the problem your Pencil Cactus is experiencing to get a treatment guide.

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Wiltingchevron_right
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Overwateringchevron_right
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Root Rotchevron_right
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Yellow Leaveschevron_right
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Slow Growthchevron_right

Care Guide

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Light
Very bright, direct light; colors intensify with more sun exposure; tolerates part shade
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Water
Water sparingly; allow soil to dry completely between waterings; minimal watering in winter
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Soil
Well-draining cactus or succulent potting mix; add perlite or sand if needed
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Fertiliser
Feed sparingly every 4–6 weeks during growing season with diluted succulent fertilizer
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Temperature
65–80°F (18–27°C); tolerates warmth well; avoid temperatures below 50°F
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Humidity
Low to moderate humidity; does not require misting and prefers drier air

Toxicity

dangerousToxic to CatsdangerousToxic to DogsdangerousToxic to Children

Sap is highly toxic and caustic; causes severe skin irritation and gastrointestinal distress; handle with gloves and keep away from children and pets

Common Diseases

coronavirusRoot Rotchevron_right

Common Pests

pest_controlSpider Miteschevron_rightpest_controlScalechevron_right

Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.