Redwood Sorrel Oxalis oregana
ABOUT
The plant commonly known as redwood sorrel has a distinct and attractive appearance, with lush greenery that draws the eye. The leaves are perhaps its most recognizable feature, with a clover-like shape that is actually comprised of three heart-shaped leaflets which form a trio. These leaves fold downward at their creases in dim light or when the plant is disturbed, creating a dynamic visual effect. Given its common name, it's no surprise that its habitat is typically associated with the shady and moist undercanopy of forests, often contributing to the verdant groundcover. Not only does the foliage of redwood sorrel provide aesthetic appeal, but it also sets the stage for the charming flowers that emerge from it. The flowers of redwood sorrel are delicate and have a whimsical quality, with five petals that can range from white to pale pink, often with delicate purple veining. The blossoms rise slightly above the foliage on slender stalks and provide a lovely contrast against the green carpet of leaves below. As a whole, the redwood sorrel presents a soft and delicate appearance, with a subtle woodsy charm that is reminiscent of the forested environments it originates from.
About this plant
NamesFamily
Oxalidaceae
Synonyms
Oregon Oxalis, Redwood Sorrel, Oregon Wood Sorrel
Common names
Oxalis oregana.
ToxicityTo humans
Redwood sorrel (Oxalis oregana) is considered to have a low level of toxicity for humans. It contains oxalic acid, which in large amounts can cause discomfort or irritation. When ingested in small quantities, it is unlikely to cause severe poisoning. However, consuming large amounts could potentially result in symptoms such as nausea, diarrhea, and stomach cramps. Individuals with kidney disorders or rheumatism should be particularly careful, as oxalic acid can exacerbate these conditions by forming oxalate crystals in the body.
To pets
Redwood sorrel is also toxic to pets because of its oxalic acid content. If a pet ingests redwood sorrel, they may experience symptoms such as vomiting, diarrhea, and lethargy. It could also cause more severe conditions such as kidney failure or damage. The risk is greater in smaller animals or those consuming large amounts. Pet owners should monitor their animals and keep redwood sorrel out of their reach to prevent accidental ingestion.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Green
Flower color
White
Height
0.5 feet (15 cm)
Spread
1 feet (30 cm)
Plant type
Herb
Hardiness zones
7
Native area
North America
Benefits
General Benefits- Ecosystem Support: Oxalis oregana, commonly known as Redwood sorrel, contributes to the biodiversity of the forest floor in its native habitats, offering shelter and food for various insects and animals.
- Ornamental Value: Redwood sorrel is prized in shade gardens for its attractive clover-like leaves and delicate pink or white flowers, adding aesthetic appeal to landscaped areas.
- Soil Protection: The plant forms a dense carpet on the forest floor, which can help prevent soil erosion and maintain soil health in shaded environments.
- Low Maintenance: Redwood sorrel requires minimal care when grown in appropriate conditions, thereby reducing the need for watering and fertilizing.
- Adaptability: It can thrive in the deep shade of forested areas, making it a suitable ground cover for challenging garden spots with low light levels.
- Seasonal Interest: Its leaves often display seasonal changes, folding down in strong light or at night, and presenting a dynamic aspect to the garden throughout the day.
- Natural Mulch: The dense growth of Redwood sorrel can act as a natural mulch, helping to retain soil moisture and suppress weed growth.
- Edible Qualities: Though not widely consumed, the leaves of Redwood sorrel are edible and have a tart, lemony flavor that can be used in small amounts to add zest to salads or as a garnish.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Oxalis oregana, commonly known as Redwood sorrel, can be used as a natural dye, providing a range of green hues when applied to fabrics or wool.
- The leaves of Redwood sorrel can serve as subtle flavoring agents in foods due to their mildly sour taste, which is reminiscent of lemons.
- In landscape design, Redwood sorrel is utilized as a low-maintenance ground cover that can thrive in the shaded areas under trees.
- For educational purposes, Redwood sorrel can be studied to understand its phototropic movements, as its leaves fold down in strong light.
- Horticulturists may propagate Redwood sorrel for its ornamental value, particularly due to its attractive foliage and delicate flowers.
- Redwood sorrel can be used in crafting and botanical art, as its leaves and flowers have a distinctive shape and can be pressed or incorporated into designs.
- As a companion plant, Redwood sorrel can be planted among taller plants where it creates a visually appealing and natural mulch that helps retain soil moisture.
- Children sometimes use the sour-tasting juice from Redwood sorrel leaves as a natural ‘lemonade’ substitute during play and exploration in the woods.
- Culinary enthusiasts may experiment with Redwood sorrel by incorporating it into salads or garnishes for a zesty, acidic note.
- During wilderness survival training or exercises, knowledge of edible plants like Redwood sorrel can be beneficial for supplemental nutrition.
Interesting Facts
Feng ShuiThe Redwood Sorrel is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Redwood Sorrel is not used in astrology practice.
Plant Symbolism- Luck: Oxalis oregana, commonly known as Redwood sorrel, shares a close resemblance to the lucky four-leaf clover. It symbolizes good fortune and serendipity, as finding a four-leaved sorrel among the typically three-leaved ones is considered a lucky find.
- Resilience: Redwood sorrel demonstrates resilience and the ability to thrive in challenging environments. It grows well in the dense forest understorey, symbolizing the ability to flourish despite adversity.
- Balance: The symmetry of Redwood sorrel leaves symbolizes balance and harmony. Its trifoliate leaf structure often represents the equilibrium between body, mind, and spirit.
- Joy: The bright, delicate flowers of the Redwood sorrel are often associated with happiness and cheer, bringing a bold splash of color to the forest floor.
WaterThe Redwood sorrel should be watered regularly, aiming to keep the soil consistently moist but not waterlogged. Depending on indoor conditions like humidity and temperature, watering when the top inch of soil feels dry, roughly every 7 to 10 days, is ideal. When watering, use approximately 16-24 ounces of water for a medium-sized pot, ensuring even distribution across the soil to reach the roots evenly. Reduce watering frequency in winter, when plant growth naturally slows down.
LightRedwood sorrel thrives best in partial to full shade conditions, mimicking its natural understory habitat. Place it in a spot where it can receive bright, indirect light, but protect it from direct afternoon sun, which can scorch its delicate leaves. A north-facing window or a shaded spot in a brighter room are both good locations for this plant.
TemperatureRedwood sorrel prefers cooler temperature conditions and can handle a temperature range from approximately 50°F to 75°F. Keep it away from hot drafts and intense heat sources, as temperatures above 80°F may stress the plant. The ideal temperature range for promoting active growth is between 60-70°F.
PruningRedwood sorrel may require minimal pruning to remove any yellow or damaged leaves and to maintain its shape. Prune as needed, preferably in the spring when the plant emerges from dormancy and begins new growth. This will encourage a lush, dense foliage pattern and keep the plant looking its best.
CleaningAs needed
SoilThe best soil mix for Redwood Sorrel consists of a well-draining, fertile medium with good organic matter, such as a mix of peat, perlite, and compost. The ideal soil pH for Redwood Sorrel should be slightly acidic to neutral, between 5.5 and 7.0.
RepottingRedwood Sorrel should be repotted every two to three years to refresh the soil and accommodate root growth. It's best to repot in the spring, just before the active growing season begins.
Humidity & MistingRedwood Sorrel thrives best at moderate to high humidity levels, around 50-70%. Ensuring good air circulation without direct drafts will help maintain the appropriate humidity for this plant.
Suitable locationsIndoor
For indoor growth, place Redwood Sorrel in bright, indirect light.
Outdoor
Grow Redwood Sorrel in shade to partial sun outdoors.
Hardiness zone
7-9 USDA
Life cycleRedwood sorrel (Oxalis oregana) begins its life cycle as a small seed, which germinates in moist, shaded soils, typically within the redwood forests where it thrives. After sprouting, the seedling grows into a juvenile plant with trifoliate leaves, a characteristic clover-like appearance. As it matures, redwood sorrel develops a network of rhizomes, allowing it to spread vegetatively and form dense patches. It flowers in the spring, producing small, delicate white to pale pink blossoms, which are pollinated by insects like bees. Following pollination, the plant produces capsules containing seeds, completing its reproductive cycle. The plant then enters a dormant phase, particularly in regions with dry summers, before resuming growth with the return of moist conditions.
PropogationPropogation time
Spring-Early Summer
The redwood sorrel, Oxalis oregana, is typically propagated through division, which is its most popular method. This process involves separating a healthy, established plant into smaller sections and planting them independently to grow into new plants. The best time to divide redwood sorrel is in the early spring or fall when the plant is not actively flowering. To divide, dig up the entire plant, being careful to keep the root ball intact. Gently separate the plant into smaller clumps, each with a portion of rhizome and a few leaves. Replant the divisions immediately at the same soil depth they were growing at previously, spacing them about 6 to 8 inches (15 to 20 centimeters) apart, and water them well to help establish the new roots.
