Overview
Oxalis multiflora Jacq. is a herbaceous plant that belongs to the family Oxalidaceae. It is commonly known as "sourgrass" due to its sour taste, which comes from the high concentration of oxalic acid present in the plant. It is native to Central and South America, but has been introduced in other parts of the world for its ornamental value.
Appearance
Oxalis multiflora Jacq. has a prostrate growth habit, with stems that can grow up to 30 cm long. The leaves are trifoliate, meaning they are divided into three leaflets, and are light green in color. The flowers are bright yellow, with five petals and a distinct trumpet-shaped corolla. They bloom in clusters, and can appear throughout the year in warmer climates.
Uses
The sour taste of Oxalis multiflora Jacq. is often used in culinary preparations. In South America, it is used as a substitute for citrus in dishes such as ceviche and salsa. The plant also has medicinal properties, and has been used to treat ailments such as stomachaches, fevers, and respiratory problems. Additionally, it is often grown as a ground cover and in hanging baskets for its ornamental value.
However, it is worth noting that Oxalis multiflora Jacq. can become invasive in some areas, spreading rapidly and outcompeting native plant species. As such, it is important to take care when planting this species in areas where it is not native.
Light Requirements
Oxalis multiflora Jacq., commonly known as the Pink Shamrock, prefers moderate to bright light. Direct sunlight can scorch the leaves and cause damage. Therefore it is ideal to place the plant in a spot that receives indirect sunlight.
Temperature Requirements
This plant is native to Mexico and Central America, and it prefers warm temperatures. It thrives in temperatures between 20-23°C (68-73°F). If it is exposed to temperatures lower than 15°C (59°F), the plant will become dormant and drop its leaves. If the plant is exposed to higher temperatures, it can cause the leaves to curl and become damaged.
Soil Requirements
Oxalis multiflora grows best in well-drained soil that is slightly acidic. The ideal pH for the soil is between 5.5-6.0. It doesn't need a lot of fertilization, but it can benefit from organic matter or a general-purpose fertilizer during the growing season. The plant will suffer if the soil is too heavy and waterlogged, so it's important to choose a potting mix that is well-draining.
Cultivation Methods
Oxalis multiflora Jacq. is a hardy plant that can be grown both indoors and outdoors. It requires well-draining soil with a pH of 6.0 to 7.0. When planting outdoors, ensure that the soil is enriched with organic matter, such as compost or well-rotted manure. The plant needs to be positioned in an area that receives partial shade to full sun.
Watering Needs
Oxalis multiflora Jacq. requires moderate watering. The plant should be watered when the soil feels dry to the touch. Ensure that the soil is not waterlogged as this may cause root rot. During the growing season, it is advisable to water the plant once or twice per week, and reduce watering during winter.
Fertilization
The plant should be fertilized during the growing season, which is spring and summer. A balanced fertilizer, such as 10-10-10, can be used to feed the plant every two to three weeks. Alternatively, organic fertilizers, such as fish emulsion or compost tea can be used. Stop fertilization during winter.
Pruning
Oxalis multiflora Jacq. requires minimal pruning, but it helps to keep the plant tidy and healthy. Deadheading spent flowers can encourage the plant to produce more blooms. Yellow or damaged leaves should be removed using sterile pruning shears. The plant can be cut back by half in late summer to promote bushier growth.
Propagation of Oxalis multiflora Jacq.
Oxalis multiflora Jacq. is a perennial plant that belongs to the family Oxalidaceae. It is commonly known as pink wood-sorrel and is native to South America. The plant produces delicate pink flowers and has clover-shaped leaves that close at night.
Propagation Methods
Oxalis multiflora Jacq. can be propagated through several methods:
Seed Propagation
Seeds of Oxalis multiflora Jacq. can be sown during spring. The seeds should be sown in seed trays filled with a well-draining potting mix and should be covered with a thin layer of soil. The trays should be kept in a warm and bright location and must be watered regularly. The seeds will germinate within 2-3 weeks, and the seedlings can be transplanted into individual pots once they have grown two sets of true leaves.
Division
The plant can be propagated through division during the spring. The clumps of the plant should be dug up, and the rhizomes should be separated carefully. Each division should have a viable shoot and root system. The divisions should be planted into individual pots, and they must be watered regularly until they are established.
Cuttings
The plant can be propagated through cuttings during the summer. The cuttings should be taken from mature plants and should be about 10 cm long. The cuttings should be stripped of their lower leaves and should be dipped in rooting hormone. The cuttings should be planted in a well-draining potting mix and must be kept in a warm and bright location. The cuttings will root within 2-3 weeks, and they can be transplanted into individual pots once they have grown roots.
Bulbs
The plant can be propagated through bulbs during the summer. The bulbs should be dug up, and the offsets should be separated carefully. Each offset should be planted into an individual pot, and they must be watered regularly. The bulbs will produce new shoots within a few weeks.
Overall, Oxalis multiflora Jacq. is an easy to propagate plant that can be grown successfully using any of the above methods.
Disease Management
Oxalis multiflora Jacq. is susceptible to several diseases such as powdery mildew, root rot, and leaf spot.
Powdery mildew: It is a common fungal disease that causes white, powdery spots on the leaves. To manage this disease, increase airflow by spacing the plants properly. Avoid overhead watering that can spread the spores and use a fungicide when necessary.
Root rot: Overwatering or high soil moisture can lead to root rot. To prevent this disease, ensure proper drainage and use well-draining soil. In case of infection, remove the infected plant and treat the soil with a fungicide.
Leaf spot: As the name suggests, this disease causes spots on the leaves and stems. To manage it, remove infected parts of the plant and apply fungicides after pruning.
Pest Management
Oxalis multiflora Jacq. is also prone to pest infestation by spider mites, aphids, and snails.
Spider mites: These tiny pests cause yellow or brown spots on the leaves and make the plant look unhealthy. To manage them, regularly spray the plant with water, especially the undersides of leaves where they thrive. You can also use insecticidal soap, neem oil, or horticultural oil.
Aphids: They are small, soft-bodied insects that suck sap from the plant and cause it to wilt. To control them, spray the plant with water or apply insecticidal soap. You can also introduce natural predators like ladybugs or lacewings to manage the infestation.
Snails: These slow-moving pests feed on the leaves, flowers, and stems, causing damage to the plant. To manage them, handpick them from the plant or use slug baits around the plant. You can also encourage natural predators like birds and toads to feed on them.
