Description of Oxalis alpina (Rose) Rose ex R. Knuth
Oxalis alpina (Rose) Rose ex R. Knuth is a perennial plant species belonging to the family Oxalidaceae. This species is commonly known as Alpine woodsorrel or Northern wood-sorrel, and it is native to North America.
Appearance of Oxalis alpina
Alpine woodsorrel typically grows up to 20cm in height and has a basal rosette of clover-like leaves. The leaves are set on long petioles and have three leaflets, each of which is heart-shaped and finely toothed at the margins. The flowers of Oxalis alpina are pink, white, or purplish in color and have five petals and five sepals. They are held on slender stems that emerge from the leaf axils, and they bloom from May to July.
Uses of Oxalis alpina
Alpine woodsorrel has a few medicinal uses. It contains oxalic acid, which is effective in the treatment of scurvy, a disease caused by vitamin C deficiency. The plant is also used to prevent and treat kidney stones and urinary tract infections due to its diuretic properties. In some cultures, the plant is used as a natural dye to color textiles.
However, the plant contains oxalic acid, which is toxic when ingested in high quantities. Therefore, it should only be used under the guidance of a healthcare professional.
Light requirement
Oxalis alpina typically grows in areas with partial shade to full sun. It is a hardy plant that can tolerate a wide range of light intensity.
Temperature requirement
The plant grows well in alpine conditions with a cool temperature range of 45 to 75 degrees Fahrenheit. However, it can tolerate a much broader range of temperature and is frost-resistant.
Soil requirement
Oxalis alpina prefers well-drained, acidic soil, typically found in the alpine tundra regions. It thrives in soils with a pH range of 5 to 6.5. The plant grows well in rocky areas with low nutrient density, and it is adapted to survive under low-nutrient conditions.
Water requirement
The plant requires moderate watering and can tolerate short periods of drought. However, excess moisture can cause the plant's bulb to rot.
Fertilizer requirement
Oxalis alpina does not require too much fertilizer. Fertilizers rich in phosphorus and nitrogen can burn the delicate roots, causing damage to the plant. A slow-release fertilizer can be added in a small quantity, depending on the soil nutrient levels.
Potting requirement
When grown in a pot, make sure it has good drainage. Use a high-quality potting mix with perlite and vermiculite. Water the plant when the topsoil is dry to touch and do not let the soil completely dry out.
Cultivation
Oxalis alpina is a wonderful addition to any garden as it is low maintenance and easy to grow. It is best to plant this species in well-draining soil that is rich in organic matter. The ideal location should receive partial shade and have a cool, moist climate. Oxalis alpina thrives in areas with consistent moisture levels, which is vital for healthy foliage growth and a bountiful bloom.
Watering Needs
As previously stated, Oxalis alpina requires moderate and consistent watering to keep the soil moist without becoming waterlogged. It is best to water this plant about once a week, particularly in warmer months when the soil tends to dry out faster. During winter, watering may need to be reduced to adjust to reduced evaporation rates. If the soil feels dry, you can give the plant a more thorough watering. The soil should be moisture-retaining but free from excessive water, which could cause root rot.
Fertilization
Although not a heavy feeder, Oxalis alpina will benefit from occasional applications of balanced fertilizer, applied at intervals of four to six weeks throughout the warmer months. It is important to follow the instructions provided on the fertilizer package for dosage and application methods. Remember to always water the plant before and after fertilization.
Pruning
Oxalis alpina typically needs little pruning other than the occasional deadheading of spent blooms. This will encourage the plant to produce more flowers and prevent the onset of disease. Because the plant grows close to the ground and has compact foliage, trimming the foliage back in early spring can promote uniform growth and a better presentation. Also, remove any damaged, yellowed or wilted leaves to promote better air circulation, minimizing the risk of disease.
Propagation of Oxalis alpina
Oxalis alpina (Rose) Rose ex R. Knuth is a perennial plant species in the family Oxalidaceae, which is native to North America. It is commonly known as Alpine woodsorrel and Snow buttercup. The plant is a great addition to rock gardens, alpine gardens, as well as woodland gardens. Propagation of Oxalis alpina can be done by seeds or division.
Propagation by Seeds
The seeds of Oxalis alpina can be sown directly outdoors in early spring. The seeds are small, so it is better to sprinkle them thinly over the soil, and then cover them with a thin layer of soil. The seeds take about 2-3 weeks to germinate. When the young plants are large enough to handle, they can be transplanted into individual pots or directly into the ground. It takes about 2 years for the plant to mature and produce flowers.
Propagation by Division
The best time to propagate Oxalis alpina by division is in the spring or fall. To divide the plant, carefully dig it up from the ground, and then use a sharp knife or garden shears to separate the plant into several small clumps. Make sure that each clump has a good root system. Plant each clump immediately into the ground or in individual pots. Water the plants well and keep them in a shaded area for a few days until they are established.
Disease and Pest Management of Oxalis alpina
Oxalis alpina is generally a healthy plant, but it is still susceptible to a few pests and diseases that can cause damage. Here are some common issues that might affect your plant and some suggestions for how to manage them.
Diseases
Leaf Spot: Leaf spot is a fungal disease that causes small brown or black spots on the leaves. The infected leaves may also turn yellow and fall off the plant. To manage this disease, remove infected leaves and ensure adequate air circulation around the plant. Avoid overhead watering and water the plant at the base.
Mushroom Root Rot: Mushroom root rot is a fungal disease that can cause rapid wilting of the plant. The roots often appear black and slimy. To manage this disease, remove infected plants and ensure proper soil drainage. Do not overwater the plant as it can cause root rot.
Bacterial Blight: Bacterial blight causes wilting and yellowing of the leaves and stems. The disease is spread by water splashing from plant to plant. To manage this disease, remove infected plants and avoid overhead watering.
Pests
Aphids: Aphids are small insects that can infest the plant and suck sap from the leaves. This can lead to stunted growth and distorted leaves. To manage this pest, use insecticidal soap or neem oil to kill the insects. Ladybugs and lacewings are also natural predators of aphids.
Spider Mites: Spider mites are tiny insects that spin webs on the plant and suck sap from the leaves. This can cause yellowing and curling of the leaves. To manage this pest, spray the plant with a strong stream of water to remove the mites. Use insecticidal soap or neem oil if the infestation persists.
Snails and slugs: Snails and slugs can cause damage to the plant by feeding on the leaves. To manage this pest, handpick the snails and slugs and dispose of them. Use slug bait or a copper barrier around the plant to prevent them from coming back.
By regularly monitoring your plant for any signs of pests and diseases, you can catch problems early and manage them before they get out of control. With proper management, your Oxalis alpina can continue to thrive and add beauty to your garden.
