Overview
Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen is a small and succulent plant, which grows in the subalpine or alpine meadows of western North America. Although it has various common names, including Spearleaf Stonecrop and Lanceleaf Stonecrop, it is more commonly known as Purple Mountain Stonecrop.Description
Purple Mountain Stonecrop is a mat-forming plant that can grow up to 4 inches in height and 1 foot in width. It has fleshy, lance-shaped leaves, which are bluish-green in color. Its leaves can grow up to 2 inches long and are arranged oppositely along the stems. During summer, the plant produces clusters of rosy-pink flowers, which attract bees and other pollinators.Uses
The Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen plant has several uses. The plant's leaves are edible and can be consumed raw or cooked. It is commonly used in medicine as a poultice to help disinfect wounds and cuts. The small stature of the plant also makes it a useful addition to rock gardens or as a border plant.Appearance
The Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen plant has a unique appearance with succulent leaves and rosy-pink flowers. Its small size and spreading habit make it the perfect groundcover plant. The bluish-green leaves are an attractive feature, especially in contrast to the pink flowers. The plant's hardiness make it suitable for use in the harsh conditions of alpine meadows, making it a valuable addition to any garden or landscape.Light Requirements
The Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen plant prefers bright light, with at least 6 hours of direct sunlight each day. However, it also tolerates partial shade, especially in areas with intense afternoon sun or in hot climates. Therefore, it is recommended to plant them in a location where they can receive an adequate amount of light.
Temperature Requirements
The Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen plant is a cold-hardy plant that is tolerant of a broad temperature range. It prefers an average temperature between 60 to 75 °F (15 to 24°C) in summer. During the winter months, the plant can tolerate temperatures between 41 to 50 °F (5 to 10°C). Additionally, it prefers a dry climate and can survive in areas with low humidity.
Soil Requirements
The Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen plant prefers well-drained soil, with a pH range between 6 to 7.5. It can grow in various soil types, including sandy loam, gravelly and rocky soils, and rocky cliffs. However, it requires good drainage, as the plant is susceptible to root rot. Adding organic amendments such as compost and perlite can improve the soil structure and provide better drainage.
Cultivation
Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen prefers to be grown in well-draining soil with a pH range of 5-7. It is best to plant this species in an area that receives full sunlight, although it can tolerate partial shade as well. It is recommended to space each plant about 8 to 12 inches apart.
Watering Needs
This plant is drought-tolerant and requires infrequent watering. It is important to allow the soil to dry out between watering sessions to prevent root rot.
Fertilization
Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen does not require regular fertilization. However, applying a slow-release fertilizer once a year, during the growing season, can help improve growth and overall appearance.
Pruning
Pruning is not necessary for Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen, but it can be beneficial to trim the plant after flowering has occurred. Cutting back the stems by a few inches can help maintain a compact and neat shape.
Propagation of Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen
Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen, commonly known as 'narrowleaf stonecrop' is propagated through several methods. These methods include:
1. Vegetative Propagation
Vegetative propagation is the process of creating new plants from vegetative parts such as leaves, stem, or roots of a parent plant. Sedum lanceolatum can be propagated through stem cuttings, division, and leaf cuttings. These vegetative parts of the plant are dipped in rooting hormone and planted in well-draining soil. They are then watered until new roots and shoots emerge.
2. Seed Propagation
Seed propagation is where new plants are grown from seed. The seeds of Sedum lanceolatum are sown in a cold frame during autumn or spring. The soil must be moist but not soggy. Germination takes place within two weeks, and the seedlings should be transferred to well-draining soil after two months.
3. Propagation by Division
Propagation by division is the process of separating clumps of plants into smaller sections and then planting each section separately. Sedum lanceolatum can be propagated by division during the spring or fall. The clumps are gently separated into smaller sections, ensuring that each section has roots. The sections are then planted in well-draining soil, watered, and left to grow new roots.
Disease and Pest Management for Sedum lanceolatum Torr. ssp. subalpinum (Blank.) Clausen
Sedum lanceolatum Torr. ssp. subalpinum is an ornamental plant that belongs to the family Crassulaceae. A succulent perennial native to the western United States, its leaves are adapted to store water in dry conditions, making it a popular choice for xeriscaping. However, like all plants, Sedum lanceolatum is susceptible to diseases and pests that can damage or kill the plant. It is important to identify and manage these issues to keep the plant healthy and thriving.
Common Diseases
The primary disease that affects Sedum lanceolatum is crown rot, caused by fungi in the Phytophthora genus. This disease attacks the base of the plant, rotting the roots and stem. Symptoms include wilting, yellowing leaves, and a foul odor. Eventually, the plant will collapse and die. Crown rot is often caused by overwatering or poorly draining soil, and it is difficult to manage once it has infected the plant. Prevention is key, and it is important to grow Sedum lanceolatum in well-draining soil and avoid excessive watering.
Another disease that affects Sedum lanceolatum is powdery mildew, a fungal infection that causes a white, powdery coating on the leaves and stems. In severe cases, it can cause stunted growth and leaf drop. Powdery mildew thrives in humid conditions, so it is important to keep the plant dry and provide good air circulation. Organic fungicides such as neem oil or baking soda solutions can also help manage this disease.
Common Pests
Sedum lanceolatum is not heavily targeted by pests, but there are a few that can cause damage to the plant. The most common pest is the sedum flea beetle, which eats tiny holes in the leaves, leaving them discolored and distorted. Handpicking the beetles can help manage this pest, as can introducing natural predators such as ladybugs or lacewings. Another pest that may affect Sedum lanceolatum is spider mites, which are tiny and difficult to see with the naked eye. They suck the sap from the leaves, causing them to turn yellow and fall off. Regularly washing the leaves with water and applying insecticidal soap can help control spider mites.
In conclusion, Sedum lanceolatum Torr. ssp. subalpinum is a hardy plant that can thrive even in adverse conditions, but it is important to be aware of the diseases and pests that can damage it. Crown rot and powdery mildew are common diseases that can be prevented by ensuring good soil drainage and limiting watering. Sedum flea beetles and spider mites are common pests that can be managed through manual removal or insecticidal treatments. With proper care and attention, Sedum lanceolatum can make a beautiful addition to any garden or landscaping project.
