Volcanic sorrel (Oxalis spiralis)

Volcanic sorrel

Also known as: Velvet oxalis

Volcanic sorrel derives its common name from the area where it was first officially collected — near the Irazu Volcano in Costa Rica. While it grows naturally in montane forests, it is also a favorite of gardeners, especially as a filler for container planting. Its stems are semi-succulent so it can withstand semi-dry conditions better than other plants.

Scientific classification

Species

Volcanic sorrel (Oxalis spiralis)

Woodsorrels, quandongs, and allies

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Toxic to Pets

Toxicity

Perennial

Lifespan

Herb

Plant Type

Early summer, Spring

Bloom Time

30 cm

Plant Height

Evergreen

Leaf type

15 - 32 ℃

Ideal Temperature

Images of Volcanic sorrel

Care Guide for Volcanic sorrel

Every week

Water

Partial sun

Sunlight

15 - 32 ℃

Ideal Temperature

Water: Volcanic sorrel thrives in tropical conditions with regular moisture and high humidity. It prefers consistent hydration, needing weekly watering to maintain its lush foliage. As an evergreen, volcanic sorrel requires steady water to support year-round growth, especially when grown indoors with fluctuating humidity.

Fertilize: To ensure volcanic sorrel thrives, apply balanced nutrition fertilizers monthly during Spring and Summer, bi-monthly in Fall, and none in Winter. This promotes healthy foliage and blooms. Avoid over-fertilization by watering volcanic sorrel beforehand to prevent root burn, ensuring vibrant growth throughout the seasons.

Pruning: Volcanic sorrel thrives with spring pruning to enhance growth and health. Key techniques involve removing dead leaves and careful shaping, avoiding excessive cuts to minimize stress. Regular trimming improves air circulation, reduces disease risk, and fosters denser growth, contributing to overall vitality and aesthetic appeal.

Propagation: Volcanic sorrel thrives through vegetative reproduction. Propagation involves gently separating buds, ensuring segments have stems and roots. Use well-draining soil and maintain moist conditions without waterlogging to promote healthy root development and growth.

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