Overview
Oxalis corniculata L. var. wrightii (Gray) B.L. Turner, also known as creeping woodsorrel, is a perennial herb that belongs to the Oxalidaceae family. It is native to North America and is commonly found in various habitats such as fields, forests, lawns, and gardens.Common Names
Creeping woodsorrel has various common names including creeping oxalis, procumbent yellow-sorrel, sleeping beauty, and yellow wood sorrel.Appearance
The plant has a prostrate or creeping growth habit and typically grows up to 4-8 inches in height. It has trifoliate leaves that are bright green and heart-shaped with a smooth texture. The leaves are typically 0.4 -1.2 inches long and wide, with a distinct purple blotch marking the center of each leaflet. The flowers of Oxalis corniculata L. var. wrightii are five-petaled and can be yellow or pinkish in color. They typically bloom from spring to fall in clusters at the end of long stalks. Each flower is around 0.4 inches in diameter.Uses
Creeping woodsorrel has been used for various purposes throughout history. The fresh leaves and stems of the plant have been consumed as a vegetable and added to salads for their tangy flavor. In traditional medicine, it has been used to treat various ailments including fevers, sore throats, digestive issues, and skin diseases. In landscaping, the plant is used as an ornamental groundcover in gardens and lawns. Its low-growing habit forms a dense mat and can provide erosion control on slopes. However, creeping woodsorrel can also be considered an invasive weed in certain areas. The plant reproduces rapidly by seed and vegetative propagation and can outcompete native vegetation. It can be difficult to control due to its ability to regenerate from its small bulblets and root fragments.Light Requirements
Oxalis corniculata L. var. wrightii prefers a bright and sunny location for its growth. It requires at least 6 hours per day of direct sunlight to thrive. However, it can tolerate partial shade for a few hours per day. If grown indoors, it is recommended to place it near a south-facing window, which receives the maximum amount of sunlight.
Temperature Requirements
The plant grows well in warm and humid environments with average temperatures ranging between 65°F to 85°F (18°C to 30°C). It cannot tolerate extreme temperature fluctuations and frost. If grown outdoors, it is advised to protect the plant from harsh winter conditions.
Soil Requirements
Oxalis corniculata L. var. wrightii prefers well-draining soils with a slightly acidic to neutral pH range (pH 5.5 to pH 7.5). The soil should be enriched with organic matter, such as compost or aged manure, to retain moisture and provide essential nutrients to the plant. Avoid overwatering the plant and allow the top inch of soil to dry out before watering again.
Cultivation Methods
Oxalis corniculata L. var. wrightii (Gray) B.L. Turner, commonly referred to as creeping woodsorrel, can be grown both indoors and outdoors. The plant prefers a warm and humid climate with partial shade. It can tolerate a wide range of soil types but grows best in well-draining soil that is rich in organic matter. Propagating the plant is possible through stem cuttings or divisions, both of which are relatively easy methods.
Watering Needs
The creeping woodsorrel, much like most plants, requires regular watering. However, it is crucial to avoid overwatering, as it can lead to root rot or fungal infections. The general rule of thumb is to water the plant once the top inch of soil feels dry to the touch. Consistently moist soil is ideal for the plant, but sitting water must be avoided.
Fertilization
Fertilizing Oxalis corniculata L. var. wrightii (Gray) B.L. Turner is not necessary but can promote healthier and more vibrant growth. Applying a balanced, slow-release fertilizer once a month during the growing season can do the trick. Always follow the manufacturer's instructions and avoid over-fertilizing.
Pruning
Pruning the creeping woodsorrel promotes bushier growth and increases the number of flowers. The best time to prune is in late fall or early spring when the plant is dormant. Use clean, sharp scissors or pruning shears to cut back the plant's stems to about two inches above the soil level. Regular deadheading of spent flowers is also essential to promote continuous blooming.
Propagation of Oxalis corniculata L. var. wrightii (Gray) B.L. Turner
Oxalis corniculata L. var. wrightii (Gray) B.L. Turner is a popular ornamental plant that can be propagated by several methods, including seeds, division, and stem cuttings.
Propagation by Seeds
The easiest and most common method of propagating Oxalis corniculata L. var. wrightii (Gray) B.L. Turner is by seeds. The seeds can be collected from the plant during the summer and can be sown immediately or stored in a cool, dry place until the next growing season. To sow the seeds, fill a seed tray with a mix of seed compost and vermiculite, sprinkle the seeds over the surface, and then lightly cover them with a thin layer of soil. Water the seeds regularly, and they will typically germinate within a few weeks.
Propagation by Division
Oxalis corniculata L. var. wrightii (Gray) B.L. Turner can also be propagated by division. This method involves separating the plant's root mass into several smaller sections, each with its own leaves and roots. To do this, gently lift the plant from the soil, shake off the excess soil, and then tease the roots apart using your fingers. Once the plant has been divided, re-pot each section into a separate pot with fresh soil, water it thoroughly, and place it in a bright, warm spot.
Propagation by Stem Cuttings
Finally, Oxalis corniculata L. var. wrightii (Gray) B.L. Turner can be propagated by stem cuttings. This method involves taking a stem cutting from the plant and rooting it in a soil mixture. To do this, select a healthy stem, and then cut it just below a node using a clean, sharp pair of scissors. Remove the lower leaves, leaving only a few at the top of the stem. Dip the cut end into rooting hormone, and then plant it in a pot filled with a mixture of compost and horticultural sand. Keep the cutting moist and in a warm, bright spot until new growth appears.
Disease and Pest Management for Oxalis corniculata L. var. wrightii (Gray) B.L. Turner
Oxalis corniculata L. var. wrightii (Gray) B.L. Turner is a hardy plant, but it can still be susceptible to certain diseases and pests. Here are some common issues you might encounter and ways to manage them.
Diseases
One disease that can affect Oxalis corniculata is powdery mildew. This fungus causes a white, powdery coating on the leaves. To manage powdery mildew, ensure proper air circulation, trim infected leaves, and apply a fungicide.
Another disease to watch out for is rust. Rust is characterized by orange or yellow spots on the leaves. Remove infected leaves and ensure that the plant is receiving good air circulation and proper watering. You can also apply a fungicide to manage rust.
Root rot is another issue that can affect Oxalis corniculata. Overwatering and poor drainage are usually the causes of root rot. To manage this, ensure the plant has proper drainage and avoid overwatering. If the roots are rotted, you may need to cut them away and repot the plant in fresh soil.
Pests
One common pest that can attack Oxalis corniculata is spider mites. These tiny pests suck on the plant sap, causing yellowing and withering of the leaves. Regularly wipe your plant down with a damp cloth to remove spider mites. You can also introduce natural predators such as ladybugs to manage the infestation.
Another pest to watch out for is aphids. These small insects can damage the leaves by sucking on the sap. To manage an aphid infestation, regularly spray your plant with a solution of water and a mild soap. You can also introduce natural predators such as lacewings or ladybugs to help control the population.
Finally, Oxalis corniculata may attract snails and slugs. These pests will eat away at the leaves and can cause serious damage. To manage a snail or slug infestation, place copper tape around the base of the plant to prevent them from climbing up. You can also handpick them or use a pesticide.
