Origin
Oxalis hirta L. var. polioeides T.M.Salter, commonly known as the pink wood sorrel, is a flowering plant that belongs to the Oxalidaceae family. It is native to the Southeastern part of the United States.
Common Names
This plant is commonly known as pink wood sorrel due to its leaves that resemble clovers. It is also called hairy yellow woodsorrel or sour grass.
Uses
Oxalis hirta L. var. polioeides T.M.Salter is often used in traditional medicine to treat various health conditions such as fever, cough, and sore throat. The leaves of the plant contain high levels of vitamin C, which makes it useful in boosting the immune system. The plant is also edible and can be used as an ingredient in salads or as a garnish in a variety of dishes. However, the plant should be consumed in moderation as it contains high levels of oxalic acid, which can be toxic in large amounts.
General Appearance
The pink wood sorrel is a small, herbaceous plant that grows up to 30 cm in height. It has a delicate stem, with leaves that are shamrock-shaped and covered in fine hairs. The flowers of the pink wood sorrel are usually pink and bloom from April to August. The plant grows well in moist and shaded areas and is often found in woodlands, meadows, and along the roadside.
Light Requirements
Oxalis hirta L. var. polioeides T.M.Salter thrives in bright, indirect sunlight. They can also tolerate partial shade but avoid exposing the plant to direct, intense sunlight for long periods as it can scorch their leaves.
Temperature Requirements
The plant can tolerate a wide range of temperatures from 50 °F to 85 °F (10 °C to 29 °C). However, it prefers temperatures between 60 °F to 75 °F (15.6 °C to 23.9 °C), which is the optimal range for its growth.
Soil Requirements
Oxalis hirta L. var. polioeides T.M.Salter prefers well-draining soil that is rich in organic matter. The soil should be slightly acidic to neutral, with a pH range of 5.5 to 7.0. The plant also prefers to grow in soil with good water retention capacity.
Cultivation Methods
Oxalis hirta L. var. polioeides T.M.Salter can be grown either indoors or outdoors. When grown outdoors, it is best to choose a location that receives partial shade and well-draining soil. The plant can tolerate a range of soil types, but it prefers soil that is slightly acidic to neutral. It is also important to keep the soil moist but not overly wet, as this can lead to root rot.
If growing Oxalis hirta L. var. polioeides T.M.Salter indoors, choose a location that receives bright but indirect sunlight. The plant can be grown in a variety of containers, as long as the container has drainage holes and the soil is well-draining. It is important to ensure that the plant receives adequate air circulation, as stagnant air can lead to fungal diseases.
Watering Needs
Oxalis hirta L. var. polioeides T.M.Salter prefers to be kept moist but not overly wet. It is important to check the soil moisture regularly and water the plant when the top inch of soil feels dry to the touch. When watering, it is best to water deeply, allowing the water to reach the bottom of the container or the root zone.
It is important to avoid getting water on the leaves, as this can lead to fungal diseases. If water does get on the leaves, be sure to blot them dry with a soft cloth or paper towel.
Fertilization
Oxalis hirta L. var. polioeides T.M.Salter can benefit from regular fertilization, especially during the growing season. A balanced, water-soluble fertilizer can be applied once a month during the growing season. Be sure to follow the manufacturer's instructions for application rates and frequency.
Avoid over-fertilizing, as this can lead to salt buildup in the soil and damage to the roots.
Pruning
Oxalis hirta L. var. polioeides T.M.Salter does not require extensive pruning, but it can be beneficial to remove any dead or damaged leaves or stems. This can help encourage new growth and improve the overall appearance of the plant.
If the plant becomes too leggy or starts to look unkempt, it can be trimmed back to promote bushier growth. Be sure to use clean, sharp pruning shears to avoid damaging the plant.
Propagation of Oxalis hirta L. var. polioeides T.M.Salter
Oxalis hirta L. var. polioeides T.M.Salter can be propagated in several ways:
1. Seeds
The plant produces small seeds that can be collected and sown in spring or early fall. The seeds should be sown in a seed-raising mix and kept moist until they germinate.
2. Division
The plant can be divided into smaller sections in spring or early fall. Carefully dig up the plant and gently separate the sections, making sure each section has roots attached. Replant the sections immediately in a potting mix.
3. Stem Cuttings
Stem cuttings can be taken in spring or early fall. Cut a stem from the parent plant that has several leaves and nodes. Dip the cut end in rooting hormone and plant it in a pot filled with a potting mix. Keep the soil moist and provide bright, indirect light.
4. Bulbils
Oxalis hirta L. var. polioeides T.M.Salter produces small bulbils at the base of the stem. These bulbils can be planted in a potting mix and grown into new plants.
Disease and Pest Management for Oxalis hirta L. var. polioeides T.M.Salter
Oxalis hirta L. var. polioeides T.M.Salter, commonly known as hairy wood sorrel, is a hardy garden plant that can tolerate different environmental conditions. However, like any other plant, it is susceptible to diseases and pests. Here are some common diseases and pests that might affect the plant and ways to manage them:
Diseases
1. Leaf spot: It is a fungal disease that causes circular brown spots on the leaves. The spots may merge, causing the leaf to wither and die. Leaf spot can be prevented by planting in well-drained soil. Avoid watering the leaves and remove infected plant parts. Applying copper-based fungicides can also help manage the disease.
2. Powdery mildew: It is a fungal disease that forms a white powdery coating on the leaves and stems of the plant. The disease can be prevented by planting in a site with good air circulation and avoiding overhead watering. Infected plant parts should be pruned and destroyed. Applying sulfur or neem oil-based fungicides can also help prevent the spread of powdery mildew.
3. Rust: It is a fungal disease that causes orange or yellowish spots on the leaves, stems, and flowers of the plant. Rust can be prevented by avoiding overcrowding of plants and ensuring good air circulation. Remove infected plant parts and apply copper-based fungicides to manage the disease.
Pests
1. Aphids: They are small insects that suck sap from the plant, causing leaves to curl and distort. Aphids can be prevented by avoiding overcrowding of plants and applying insecticidal soap or neem oil-based insecticides. Beneficial insects like ladybugs and lacewings can also help control aphids.
2. Spider mites: They are tiny insects that feed on the underside of leaves, causing yellowing and bronzing of leaves. Spider mites can be prevented by ensuring good air circulation and avoiding overhead watering. Infected plant parts should be pruned and destroyed. Applying horticultural oil or insecticidal soap can also help manage spider mites.
3. Snails and slugs: They are common pests that feed on the leaves and stems of the plant, causing irregular holes. To prevent snails and slugs from damaging the plant, avoid planting in areas where they are prevalent. Handpicking, creating barriers with copper tape or diatomaceous earth, and applying iron phosphate-based baits can also help manage snails and slugs.
