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Purple Shamrock

Oxalis triangularis

houseplant

verifiedReviewed by the GreenScout Team

Purple Shamrock is a striking houseplant featuring deep purple, triangular-shaped leaves that fold closed at night and in low light conditions. It produces delicate pink or white flowers that contrast beautifully with the foliage. This plant is relatively easy to grow and adds dramatic color to indoor spaces.

Common Problems

Select the problem your Purple Shamrock is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Pale Leaveschevron_right

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Wiltingchevron_right

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Slow Growthchevron_right

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Overwateringchevron_right

Care Guide

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Light

Bright, indirect light; tolerates partial shade but colors are more vibrant in brighter conditions

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Water

Keep soil consistently moist but not waterlogged during growing season; reduce watering in winter dormancy

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Soil

Well-draining potting soil with organic matter; slightly acidic to neutral pH preferred

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Fertiliser

Feed every 2–3 weeks during growing season with balanced, diluted liquid fertilizer; reduce in winter

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Temperature

65–75°F (18–24°C); avoid temperatures below 60°F and drafts

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Humidity

Moderate humidity; mist occasionally or place on pebble tray to increase moisture

Toxicity

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Contains oxalates which can cause oral irritation, digestive upset, and kidney issues; keep away from pets and children

Common Diseases

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Common Pests

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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.

Frequently Asked Questions

Why do my Purple Shamrock's leaves close up during the day?

Purple Shamrock's triangular leaves fold closed at night and also in low-light conditions — this is a natural light-response behavior, not a sign the plant is struggling. They reopen once bright, indirect light returns.

Is Purple Shamrock toxic to pets?

Yes — it contains oxalates that can cause oral irritation, digestive upset, and even kidney issues if eaten in quantity, so keep it away from pets and children despite its delicate pink or white flowers.