Volcanic sorrel (Oxalis spiralis)

Also known as: Velvet oxalis

Volcanic sorrel gets its name from its initial discovery near the Irazu Volcano in Costa Rica. This plant is naturally found in montane forests but is also popular among gardeners, particularly for use in container gardens. Its semi-succulent stems allow it to tolerate drier conditions better than many other plants.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Volcanic sorrel

Lifespan

Perennial

Plant Type

Herb

Plant Height

30 cm

Spread

50 cm

Leaf Color

Green, reddish, purplish

Flower Size

1-2 cm

Flower Color

Yellow

Images of Volcanic sorrel

Quickly Identify Volcanic sorrel

Look for the characteristic three-lobed leaves, similar to clover but thinner and more delicate. The leaves are typically green but may have reddish or purplish tints. The flowers are small, usually yellow, and grow in clusters.

Scientific Classification of Volcanic sorrel

Phylum

Vascular plants

Class

Dicotyledons

Order

Oxalidales

Family

Wood sorrel

Genus

Wood sorrels

Species

Volcanic sorrel

Planting and Growing of Volcanic sorrel

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-6 hours

Ideal Temperature

65-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Volcanic sorrel?

For Oxalis spiralis, the rule of thumb is to keep the soil consistently moist but not soggy. Aim to provide approximately 250 milliliters of water per session, ensuring the soil is evenly moist but allowing the top layer to dry out between watering sessions.

What are the symptoms of an underwatered Volcanic sorrel? ›

What should I do if my Volcanic sorrel is not getting enough water? ›

What are the symptoms of an overwatered Volcanic sorrel? ›

How to save an overwatered Volcanic sorrel? ›

What Are the Sunlight Requirements for Volcanic sorrel?

Sunlight Requirements: Partial sun

Duration of light: 4 to 6 hours

Oxalis spiralis thrives in partial sun conditions, where it receives 4 to 6 hours of sunlight per day. This balance promotes healthy foliage, vibrant colors, and strong overall growth, while preventing the risks of overexposure or insufficient light.

What is the ideal environment? ›

How to achieve ideal lighting? ›

Benefits of ideal lighting? ›

What Is the Ideal Temperature Range for Volcanic sorrel?

Ideal Temperature: 65 ~ 75℉

The preferred temperature range for Oxalis spiralis is between 65°F and 75°F. This range ensures the plant remains within optimal growth conditions, where metabolic and physiological processes can proceed efficiently. Maintaining this temperature range is crucial for achieving vibrant foliage and sustained flowering.

What Soil is Best for Volcanic sorrel?

Soil type: Sandy loam, Loam

Soil PH: 6 ~ 7.5

Oxalis spiralis thrives in well-draining soil as it helps prevent root rot, a common issue when water sits around the roots for too long. This type of soil ensures that the plant receives just enough water without being over-saturated, promoting healthy growth. This plant prefers moderately fertile soil. It doesn't require overly rich soil but benefits from a balanced mix that provides necessary nutrients for growth and flowering, helping to sustain its vibrant leaves and charming blooms. While well-draining, the soil should also retain some moisture to support Oxalis spiralis's growth. Maintaining a light moisture level can keep the plant hydrated, especially during warmer periods, which is crucial for continuous healthy development.

How to Fertilize Volcanic sorrel?

Fertilizer type: Balanced

When fertilizing Oxalis spiralis, use a balanced water-soluble fertilizer at a quarter strength. The recommended dose for this plant should be about 200-250 ml per application, ensuring the soil is damp but not soggy, to avoid root rot.

How to Prune Volcanic sorrel?

Pruning Time: Spring, Summer

Before pruning, ensure your scissors or shears are clean and sterilized. This will help prevent the introduction of pathogens to the plant, reducing the risk of disease. When pruning, take care not to remove new shoots, as these are the future of your plant's growth. Focus on shaping and removing damaged parts instead. More About Pruning Techniques→

How to Propagate Volcanic sorrel plant?

Propagate Time: Spring, Early spring, Late spring

Select a well-draining potting mix to promote aeration and prevent waterlogging, which can lead to root rot. A mixture that includes perlite or sand can help with drainage. Ensure the soil is sterile to minimize the risk of fungal infections.

Choose healthy stems free from disease or insect infestation, ideally about 4-6 inches long. Cut just below a node, which is where root development will be most successful. Strip the lower leaves to focus energy on root development.

Place the cuttings or seeds into the prepared soil and water them lightly to keep the soil moist but not soggy. Over-watering can hinder root development, so ensure good drainage and monitor moisture levels regularly.

More About Propagating Techniques→

How to Repot Volcanic sorrel plant?

Repotting frequency: Every 2-3 years

You should consider repotting your Oxalis spiralis when you notice the roots beginning to emerge from the drainage holes or if the plant appears root-bound and growth seems stunted. This plant tends to show signs of crowded roots, which is a clear indicator that it's time for a new pot.

Select a pot that is only one size larger than the current one. A pot too large can lead to excessive moisture and root rot. An ideal pot should have ample drainage holes to ensure excess water can escape, maintaining the well-being of your plant's roots.

Pick a well-draining potting mix, ideally one that incorporates perlite or sand to aid in aeration. This ensures that the roots do not sit in water, which could cause rot, and maintains a healthy balance of moisture and air.

Toxicity

Ingestion

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.