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Oxalis 'Triangularis'

Purple Shamrock

Oxalis triangularis, commonly known as Purple Shamrock, is a bulbous perennial prized for its deep purple, triangular leaves that fold at night and reopen in daylight. This movement, known as photonasty, adds a dynamic element to its charm.

In spring and summer, Oxalis triangularis produces delicate, trumpet-shaped flowers in white or pale pink, contrasting beautifully with its dark foliage. It thrives in bright, indirect light and prefers well-drained soil, making it ideal for indoor cultivation or shaded garden beds. This variety is low-maintenance and can be grown in containers or as a seasonal accent plant.

Description	Price
Bin Display Box of 250 Bulbs, Size 1	$82.50
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Bulk Tray of 2500 Bulbs, Size 1	$625.00
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When should I plant Oxalis 'Triangularis'?

Growing and Maintenance Tips for Oxalis 'Triangularis'

Planting: Plant bulbs just below the surface in a well-draining potting mix (2 parts peat to 1 part loam works well). Use a container with drainage holes.
Spacing: Place bulbs 1 to 2 inches apart for a full look.
Light: Prefers bright, indirect light. A north- or east-facing window is ideal. Can tolerate some direct morning sun but avoid harsh afternoon rays.
Watering: Water when the top inch of soil feels dry. Avoid overwatering—Oxalis dislikes soggy roots. Reduce watering during dormancy (often in summer or winter).
Temperature & Humidity: Thrives at 60–75°F. Protect from drafts and temperature swings. Prefers moderate humidity but adapts well to typical indoor conditions.
Fertilization: Feed every 2–3 weeks during active growth (spring and fall) with a balanced liquid fertilizer diluted to half strength.
Dormancy: If leaves yellow and die back, the plant may be entering dormancy. Stop watering, let it rest in a cool, dry spot for 4–6 weeks, then resume watering to encourage regrowth.
Propagation: Divide bulbs or offsets when repotting. Each section should have 3+ growing points for best success.
Pest & Disease: Generally pest-free. Watch for root rot if overwatered. Toxic if ingested—keep away from pets and children.