Overview of Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw, also known as Alpine bladderpod, is a flowering plant that is native to western North America. The plant is a subspecies of the Lesquerella alpina species, which is part of the Brassicaceae family. The plant is typically found in high-elevation alpine and subalpine habitats, such as mountain meadows and rocky slopes.
Appearance of Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw is a small and herbaceous plant that typically grows to between 5 and 30 cm in height. The leaves of the plant are small and gray-green in color, and are covered in tiny hairs and glandular trichomes. The flowers of the plant are bright yellow and have four petals. The plant blooms in mid- to late-summer, from July to August.
Common Names of Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw
Alpine bladderpod is the most common name for Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw. Other common names for the plant include subalpine bladderpod, Rollins' bladderpod, and subumbellate bladderpod.
Uses of Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw has historically been used by indigenous peoples for its medicinal properties. The plant was used to treat a variety of ailments, such as coughs, colds, and sore throats. Additionally, the seeds of the plant were used as a source of oil, which could be used for cooking or as a substitute for castor oil.
In modern times, Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw is primarily used as a landscape plant. The plant is cultivated for its attractive yellow flowers and compact size, and is particularly well-suited for rock gardens or alpine displays.
Light Conditions
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw requires full exposure to sunlight for optimal growth and development. It does not grow well in shaded areas or under dense canopy cover. Therefore, it is recommended to plant it in areas with abundant sunlight exposure.
Temperature Requirements
This plant species thrives in cool to moderate climate conditions, typically found in alpine and subalpine regions. The ideal temperature range for Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw is between 10 to 20 degrees Celsius (50 to 68 degrees Fahrenheit). It is sensitive to extreme temperature fluctuations, and thus, planting it in a stable temperature environment is advisable.
Soil Conditions
The plant prefers a well-drained, deep, fertile, and moist soil. It thrives well on sandy, loamy, and clay soils with a neutral pH range between 6.0 to 7.5. The soil should be rich in organic matter and provide adequate nutrition for the plant to grow and produce viable seeds. It is also recommended to add compost or organic fertilizer to the soil before planting to improve soil quality.
Cultivation methods
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw is a perennial plant that belongs to the Brassicaceae family. It is native to the western United States and grows in alpine and subalpine areas. To successfully cultivate Lesquerella alpina ssp. subumbellata, it is important to mimic its natural growing environment. This plant requires well-drained soil with a pH range between 6.5 to 7.5. It thrives in areas with full sun exposure, but it can also tolerate partial shade. It is best to plant Lesquerella alpina ssp. subumbellata in the spring. The seedlings should be spaced out about 12 inches apart, and the soil should be kept moist until they establish themselves.Watering needs
Lesquerella alpina ssp. subumbellata requires moderate watering. During the growing season, it is important to keep the soil moist but not waterlogged. The frequency of watering will depend on the climate, with hotter and drier areas requiring more frequent watering. It is recommended to water this plant in the morning, allowing the soil to absorb the water before the heat of the day.Fertilization
Lesquerella alpina ssp. subumbellata does not require much fertilization. It is important to avoid using high-nitrogen fertilizers, as they can stunt the plant's growth. A low-nitrogen, phosphorus-heavy fertilizer can be applied in the spring to the soil surrounding the plant. It is essential to follow the instructions on the fertilizer package to prevent over-fertilizing.Pruning
Pruning Lesquerella alpina ssp. subumbellata is not necessary for its growth. However, removing dead or damaged leaves and stems can improve the plant's overall appearance. It is essential to wait until the plant has finished flowering before pruning since flowers develop on the previous year's growth. To prune, select the stem towards the base of the plant and use sharp, sterile pruning shears to make a clean cut. It is best to prune during the dormant season for this plant, which is in the fall.Propagation of Lesquerella alpina ssp. subumbellata
Lesquerella alpina ssp. subumbellata can be propagated through seed and vegetative methods.
Seed Propagation
Seeds of Lesquerella alpina ssp. subumbellata have a hard seed coat that can hinder germination. Scarification, or the process of nicking or sanding the seed coat, can improve seed germination rates. Seeds should be sown in well-draining soil with good moisture retention. Germination can take a few weeks to several months.
Vegetative Propagation
Lesquerella alpina ssp. subumbellata can also be propagated through stem cuttings. Cuttings should be taken from mature stems during the active growing season and treated with a rooting hormone before being planted in a well-draining soil mix. Cuttings should be kept moist and in a warm, humid environment to encourage root growth. Once roots have formed, plants can be transplanted to their permanent location.
Disease and Pest Management for Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw
Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw is a unique plant species found in alpine regions of the western United States. Although this species is not widely grown, it is susceptible to several diseases and pests that can significantly affect its growth and development. Here are some common diseases and pests that might affect Lesquerella alpina and ways to manage them.
Diseases
Root Rot: Root rot is a common fungal disease that affects many plant species, including Lesquerella alpina. This disease is caused by a fungus that attacks the plant's root system, leading to wilting, yellowing, and eventual death. To manage root rot in Lesquerella alpina, avoid overwatering and ensure proper drainage. If root rot is already present, remove infected plants and soil and replace with sterilized soil to prevent further spread of the disease.
Downy Mildew: Downy mildew is a fungal disease that primarily affects plant leaves, causing them to yellow and wilt. This disease thrives in cool, damp conditions and can spread quickly, leading to stunted growth and reduced yield. To manage downy mildew in Lesquerella alpina, ensure proper air circulation and avoid overcrowding. Additionally, apply a fungicide regularly to prevent the spread of the disease.
Pests
Aphids: Aphids are small, soft-bodied insects that feed on Lesquerella alpina leaves and stems. These pests can cause stunted growth, distorted leaves, and yellowing of foliage. To manage aphids in Lesquerella alpina, use natural predators like ladybugs or lacewings or apply insecticidal soap to kill off the pests.
Spider Mites: Spider mites are common pests that can be found on Lesquerella alpina plants. They are generally found on the undersides of leaves and can cause yellowing and stippling of foliage. To manage spider mites, use a strong stream of water to wash them off the plants or apply a miticide to kill off the pests.
Thrips: Thrips are tiny, slender insects that feed on Lesquerella alpina flowers and foliage. They can cause stunted growth and distortion of foliage and flowers. To manage thrips in Lesquerella alpina, use natural predators like mites or lacewings or apply insecticidal soap to kill off the pests.
By implementing these disease and pest management strategies, Lesquerella alpina (Nutt.) S. Wats. ssp. subumbellata (Rollins) Rollins & Shaw can yield a healthy and productive crop, free from common diseases and pests.
