Oxalis (Shamrock Plant) Identification and Care

Your Plant is Oxalis

The description—heart-shaped trifoliate leaves, pink fuzzy new growth, nyctinastic folding (leaves close at night)—confirms Oxalis, commonly called shamrock plant or false shamrock.

Common Varieties

• Oxalis triangularis – purple leaves, pink flowers.
• Oxalis regnellii – green leaves, white flowers.
• Oxalis 'Iron Cross' – green with burgundy center, yellow flowers.

All share the same basic care requirements.

Essential Oxalis Care

Light

Bright indirect light. Some morning sun enhances color. Too little light = leggy, weak growth.

Watering

• Allow top inch of soil to dry between waterings.
• Reduce watering if leaves start yellowing (sign of dormancy onset).
• During dormancy (often summer), keep barely moist.

Dormancy Cycle

Oxalis periodically goes dormant—leaves yellow and die back. This is NORMAL.

• Stop watering; let foliage die completely.
• Store pot in cool, dark place for 1-3 months.
• Resume watering/light; new growth emerges from bulbs.

Temperature & Humidity

• Average home temps (65-75°F/18-24°C).
• Humidity not critical.

Propagation

Divide bulbs during repotting or when dormant. Each small bulb grows into a new plant.

Pests

Watch for spider mites in dry conditions; aphids on new growth.

Oxalis is charming, long-lived, and forgiving once you understand its dormancy rhythm. The leaf-folding "sleep" behavior makes it especially engaging.