Oxalis (Shamrock Plant)

Oxalis triangularis

Family

Oxalidaceae

Origin

Brazil

Difficulty

Medium

Sunlight

Bright indirect light

Water

Weekly

Temperature

15-24°C

Soil

Well-draining potting mix

Flowering

Small pink/white flowers

Height

15-30cm

Oxalis triangularis is striking for its deep purple, butterfly-shaped leaves that fold shut at night or when disturbed. The shamrock-like leaf pattern has made it associated with St. Patrick's Day, though it's not a true clover.

🌱Care Guide

Water when top inch of soil is dry. Provide bright indirect light — leaves follow light. If leaves die back, the plant may be entering dormancy — reduce water and wait for new growth from the bulbs.

🧬Evolution & History

Oxalis evolved its light-sensitive leaf movement (photonasty) to protect against excessive light exposure and water loss. The genus contains over 500 species worldwide. Some species have been cultivated since the 1600s.

💡Fun Facts

#1Leaves close at night and on cloudy days
#2Deep purple variety is the most popular houseplant
#3Grows from small bulbs underground
#4Over 500 species worldwide

❓FAQ

My Oxalis leaves have died back completely — is it dead?▼

No, Oxalis often goes dormant. Reduce watering, keep the pot in a cool spot for 2-4 weeks, then resume watering. New leaves will emerge from the bulbs.

Why are my leaves green instead of purple?▼

Green leaves indicate insufficient light. The purple color intensifies with more light. Move to a brighter spot with indirect light.

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