Great yellow woodsorrel (Oxalis grandis)

Great yellow woodsorrel

Great yellow woodsorrel is recognized by its heart-shaped clover-like leaves and delicate yellow flowers that bloom in spring, adding a splash of color to woodlands. These leaves often fold at night, a phenomenon called nyctinasty, which may protect against cold or predation. Thriving in moist, shaded areas, great yellow woodsorrel spreads easily, forming a lush, ground-hugging carpet that adapts to its environment through its resilient rhizomatous root system.

Scientific classification

Species

Great yellow woodsorrel (Oxalis grandis)

Woodsorrels, quandongs, and allies

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Toxic to Pets

Toxicity

Perennial

Lifespan

5 - 38 ℃

Ideal Temperature

Summer

Growth Season

Rapid

Growth Rate

Images of Great yellow woodsorrel

Quickly Identify Great yellow woodsorrel

Bright yellow 1-inch (2.5 cm) flowers with distinctive red marks at base.

Trifoliate leaves with inversely heart-shaped leaflets, each 1-2 inches (2.5-5 cm).

Capsular fruit with tart unripe flavor, bursting open for seed dispersal.

Delicate herb with 5-parted flowers in white, yellow, lavender, or rose.

Smooth leaf surface with maroon-lined leaflets on long stalks.

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Care Guide for Great yellow woodsorrel

Every week

Water

Full sun

Sunlight

5 - 38 ℃

Ideal Temperature

Water: Great yellow woodsorrel requires moderate watering, ensuring the bulb remains dry. Water when the top inch of soil is dry and keep the top 2 inches moist after watering. Use rainwater for best results; however, suitable tap water is acceptable if it’s not too hard or cold.

Fertilize: Great yellow woodsorrel requires minimal feeding if planted in balanced soil. Use half-strength all-purpose liquid fertilizer every couple of months, avoiding feed during winter dormancy. When repotting, incorporate organic compost for a nutrient boost to support growth during its sprouting phase.

Pruning: Great yellow woodsorrel features vibrant yellow flowers and clover-like leaves. Prune in early spring to enhance growth and maintain shape, avoiding heavy cuts during flowering. Regular trimming fosters better air circulation, helps prevent diseases, and promotes overall health. Use clean, sharp tools for precision.

Propagation: Propagate great yellow woodsorrel in winter when dormant by separating bulbs or tubers. Gently pull apart the bulbs by hand and place them in new containers to create additional plants.

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