Overview
Oxalis lasiorrhiza T.M.Salter is a rare and intriguing plant species belonging to the Oxalidaceae family. It is commonly known as Hairy-root wood sorrel due to its unique root system and leaves. This plant species is native to the eastern United States and can be found growing in moist soils along the banks of streams, rivers, and other waterways.
Description
The Oxalis lasiorrhiza T.M.Salter plant has a unique appearance with its long and thin leaves measuring up to four inches long. These leaves are light-green in color with a slight purple tint underneath, giving this plant its distinctive look. The plant's stem is reddish-brown, and its root system is incredibly hairy, which is where it gets its name. The flowers of this plant are small and yellow and grow in clusters above the leaves.
Uses
The Oxalis lasiorrhiza T.M.Salter plant is known for its medicinal properties. Native Americans have long used this plant to alleviate various illnesses such as stomach pains and indigestion. The plant's roots and leaves contain high levels of vitamin C, which are essential for the human body. Additionally, some people use the plant as a decorative plant due to its unique appearance, although it is relatively rare and not widely available.
Cultivation
Oxalis lasiorrhiza T.M.Salter thrives in moist soils and requires sufficient sunlight to grow. It can grow in both full sun and partial shade, but too much sun can cause the leaves to wilt. This plant species is hardy and can tolerate cold temperatures and low humidity, making it perfect for outdoor cultivation in some areas. Propagation can be done through stem cuttings or seeds. Proper care, such as regular watering and fertilization, can help ensure that this plant thrives and produces beautiful yellow flowers.
Light Requirements
Oxalis lasiorrhiza T.M.Salter prefers bright, indirect sunlight. The plant should not be exposed to direct sunlight for prolonged periods as it can lead to scorching of the leaves. A shaded or partially shaded area with bright light is ideal for the growth of Oxalis lasiorrhiza T.M.Salter.
Temperature Requirements
Oxalis lasiorrhiza T.M.Salter can tolerate a wide range of temperatures. The plant grows best in temperatures ranging from 55°F to 70°F (13°C to 21°C). Temperatures below 50°F (10°C) can cause the plant to go dormant, while temperatures above 80°F (27°C) can lead to heat stress, wilting, and leaf drop.
Soil Requirements
The plant requires well-draining soil with a pH range of 5.8 to 6.5. The soil should be kept consistently moist but not wet, as overwatering can lead to root rot. A soil mix containing peat moss, perlite, and sand is ideal for Oxalis lasiorrhiza T.M.Salter. Adding organic matter like compost or leaf mold can improve soil fertility and provide essential nutrients for healthy plant growth.
Humidity Requirements
Oxalis lasiorrhiza T.M.Salter prefers moderate to high humidity levels. The plant should be kept in an area with a humidity level of at least 50%. If the air is too dry, the plant may experience leaf drop and wilting. To increase humidity levels, the plant can be placed on a tray filled with pebbles and water or misted regularly.
Cultivation Methods
Oxalis lasiorrhiza T.M.Salter, commonly known as hairy-root wood-sorrel, is a species of flowering plant in the oxalis genus. The plant is native to South Africa and can be grown outdoors in USDA zones 9-11. It is a perennial plant that forms a clump of rhizomes, and its leaves are greenish-brown and hairy.
For successful cultivation, Oxalis lasiorrhiza T.M.Salter requires full sun to partial shade and well-draining soil. The plant can tolerate a wide range of soil conditions, including clay and sandy soils, as long as they are well-draining. The ideal soil pH should be slightly acidic to neutral (5.5 to 7.5). The plant can be propagated by dividing the clump of rhizomes or from seeds.
Watering Needs
Oxalis lasiorrhiza T.M.Salter requires regular watering during the growing season, especially during hot and dry periods. The plant prefers moist soil but can tolerate short periods of drought. Watering should be reduced during the winter months to avoid waterlogging the soil, which can cause root rot.
To avoid overwatering, ensure the soil is well-draining and only water when the top one inch of the soil is dry. During extremely hot weather, the plant may require watering twice a week. However, be sure not to water the leaves as it can cause fungal diseases.
Fertilization
Fertilization is essential for the growth and development of Oxalis lasiorrhiza T.M.Salter. For best results, use a balanced fertilizer such as 10-10-10 once a month during the growing season (spring and summer). During the dormant season (fall and winter), reduce fertilization to once every three months. It is important to follow the manufacturer's instructions when applying fertilizer, as over-fertilization can harm the plant and may result in burning the roots.
Pruning
Pruning is essential to maintain the shape and size of the Oxalis lasiorrhiza T.M.Salter. It is best to prune during the dormant season (fall and winter) to encourage growth in the spring season. To prune, remove any dead or yellowing leaves and stems using a clean and sharp pair of scissors or garden shears. Also, remove any stems that are growing in a direction that is not desirable.
It is important not to remove more than one-third of the plant during pruning as it may stress the plant and affect its growth. It is advisable to provide support for the plant if it grows tall and leggy to avoid breaking the stems.
Propagation of Oxalis lasiorrhiza T.M.Salter
Oxalis lasiorrhiza T.M.Salter, also known as Silver Shamrock, can be propagated through division, seed, and bulbil.
Division
Dividing Silver Shamrock is the most common and easy method of propagation. The plant should be carefully dug up, and the rhizome should be divided into smaller clumps. Each clump should have a few healthy stems, roots, and sufficient rhizome. The divided clumps can then be replanted in well-drained soil, and the plant should be watered adequately until it establishes roots.
Seed
Silver Shamrock produces small, yellow flowers that later form a capsule containing tiny seeds. The seeds can be collected from mature capsules in the fall and sown in moist soil in the spring. The seeds should be sown on the surface of the soil and lightly covered with a layer of fine vermiculite. The soil should be kept moist, and the seeds should germinate within 2-3 weeks. It should be noted that growing from seed may take longer and is less reliable than division.
Bulbil
Silver Shamrock also produces bulbils that can be used for propagation. The bulbils are small, round, and grow from the base of the plant stem. They can be carefully removed, and the outer layer can be peeled off to reveal the tiny bulbs. The bulbils can then be planted in well-drained soil, and the plant should be watered adequately until it establishes roots. The bulbils may take longer to develop into mature plants than division.
Disease Management
Oxalis lasiorrhiza T.M.Salter is relatively resistant to plant diseases. However, it is possible for the plant to be infected by fungal diseases such as leaf spot and powdery mildew. These diseases appear as spots or patches on the leaves, and may cause the leaves to turn yellow and drop off. To manage these diseases, it is important to practice good sanitation by removing and disposing of all infected plant materials. Additionally, avoid overhead watering and provide adequate air circulation to prevent the growth and spread of fungal spores. Fungicides may also be used to manage severe infections.
Pest Management
There are a few pests that may attack Oxalis lasiorrhiza T.M.Salter, including spider mites, mealybugs, and aphids. Spider mites are among the most common pests that affect this plant and can cause significant damage if not managed promptly. These pests are visible as small red or yellow specks on the leaves and may cause yellowing and distortion of the leaves. Infected plants may be sprayed with insecticidal soap or neem oil to control the pests. Mealybugs and aphids may also be controlled using insecticidal soap or neem oil. It is important to check regularly for signs of infestation to prevent an outbreak and keep the plant healthy and vibrant.
