Overview
Calamagrostis lanceolata Roth, also known as bog witchgrass, is a perennial grass species commonly found in wetlands and marshes across North America.
Description
The plant has a compact, clumping growth habit that reaches a height of 1-3 feet. The stems are sharply pointed, growing from a basal rosette. The leaves are narrow and lance-shaped with a shiny green color. The panicles are dense and cylindrical, resembling spikes, and produce numerous small flowers that bloom during the summer and fall months.
Origin and Distribution
Calamagrostis lanceola is native to North America and can be found growing in wetlands and marshes from Alaska to Newfoundland, and south to California, Texas, and Florida. It is commonly found along the edges of streams, ponds, and lakes where the soil is damp and the water is shallow.
Uses
Calamagrostis lanceola is primarily used for its ornamental value in landscaping and gardening. Its unique texture and height make it an attractive addition to rain gardens, water features, and naturalized areas. Additionally, it provides habitat for a variety of wildlife, including birds and small mammals.
Light
The Calamagrostis lanceolata Roth plant requires full sun to partial shade conditions. It can tolerate partial shade as long as it receives direct sunlight for at least four hours during the day.
Temperature
The ideal temperature range for the Calamagrostis lanceolata Roth plant is between 65°F and 75°F. It is a hardy plant that can withstand winter temperatures as low as -40°F. However, during the summer months, temperatures above 90°F can cause stress, and the plant may require additional watering.
Soil
The Calamagrostis lanceolata Roth plant grows well in well-draining soil with a pH between 6.0 and 7.5. It can tolerate sandy and clay soils as long as they are well-draining. The plant prefers moist soil, but it cannot tolerate standing water. Therefore, soil that is able to retain some moisture while also allowing for good drainage is ideal.
Cultivation
Calamagrostis lanceolata Roth, also known as Rocky Mountain Reed Grass, should be planted in a location that receives full sun to part shade. It thrives in well-drained soil, but can tolerate heavy clay soil as well. It is a low maintenance plant and can be grown in USDA hardiness zones 4 through 8.
Watering Needs
Rocky Mountain Reed Grass prefers consistent moisture but can tolerate occasional drought. Water the plant thoroughly once a week during the growing season. Avoid overwatering, as it can cause root rot and fungal diseases.
Fertilization
Calamagrostis lanceolata Roth does not require heavy fertilization, as it is a low maintenance plant. However, a light application of balanced fertilizer at the beginning of spring can help promote growth and flowering. Avoid using high-nitrogen fertilizers, as they can cause the plant to become too leafy and produce fewer flowers.
Pruning
Rocky Mountain Reed Grass does not require regular pruning, but dead or damaged leaves and stems should be removed as they appear. At the end of the growing season, the entire plant can be cut back to ground level to promote healthy growth in the following year.
Propagation of Calamagrostis lanceolata Roth
Calamagrostis lanceolata Roth is typically propagated through division or seed.
Division
Dividing Calamagrostis lanceolata Roth is best accomplished in the spring or fall. Carefully dig up the plant and separate the clumps into smaller sections, making sure each division has a few healthy shoots and roots attached. Replant the divisions at the same depth they were growing previously, ensuring that they are well watered.
Seed
The seed of Calamagrostis lanceolata Roth is best sown in the fall, directly into the soil at a depth of no more than 1/4 inch. Seed germination rates can be improved by first stratifying the seed for six to eight weeks in a refrigerator, then sowing them into the soil. Plant seedlings can be transplanted to their permanent location once they are big enough to handle.
Disease Management:
Calamagrostis lanceolata Roth, commonly known as Lance-leaved Feather Grass, does not face any major diseases. However, occasional fungal infections, including rust, may occur. Fungal diseases can cause leaf spots, blighted leaves, and stunted growth. To prevent fungal infections, avoid overcrowding the plants and ensure good air circulation. Remove any infected plant parts immediately before the disease spreads. In case of severe infection, fungicides may be used as a last resort.
Pest Management:
The most common pests that affect Lance-leaved Feather Grass are aphids and spider mites. Aphids are small, sap-sucking insects that can weaken the plant and cause stunted growth. Spider mites are tiny, spider-like pests that can cause leaf discoloration, wilt, and stunted growth. One easy way to control aphids and spider mites is by regularly spraying the plants with water. This will help to remove these pests and prevent them from infesting the plant. Ladybugs and lacewings are natural predators that can prey on these pests. If the infestation is severe, insecticidal soap or neem oil may be used as a natural remedy.
