Overview
Trisetum triflorum (Bigelow) A.& D. Löve ssp. molle (Kunth) A.& D. Löve, also known as purpletop trisetum, is a grass species that belongs to the Poaceae family. It is a perennial grass that is native to North America, specifically widespread throughout the Great Plains, the Rocky Mountains, and western parts of Canada.
Description
Purpletop trisetum is a cool-season grass that grows from 2 to 4 feet in height and 1 to 2 feet in width. Its leaves are flat, rolled at the edges and grow up to ¼ inch in width. The blades are light green, hairless, and the tips are pointed. The inflorescence is a dark, purplish- to reddish-brown, bristly, dense panicle that blooms in summer and early fall. The seeds are small, about 0.08 inches long, and have a twisted awn that is about as long as the seed.
Common Names
Aside from its scientific name, purpletop trisetum has different common names, including tall trisetum, purpletop, purpletop trisetum, and sheltowee panic grass. These names vary depending on the region or state where the plant is commonly found.
Uses
Purpletop trisetum is commonly used for landscaping, ground cover, and erosion control because of its attractive appearance and quick growth. It is also used to improve wildlife habitat, as it provides food and cover for small mammals and birds. Additionally, it is a popular forage grass due to its high palatability, digestibility, and high protein content.
hereLight Requirements
Trisetum triflorum ssp. molle requires plenty of sunlight for optimal growth. It can tolerate partial shade, but growth may be slowed down. This species can thrive in areas where there is plenty of direct sunlight for at least six hours a day.
Temperature Requirements
This plant species is known to grow best in temperate regions where the temperature ranges between 70 and 80 degrees Fahrenheit. It can tolerate moderately cold temperatures and is known to grow well in areas that experience freezing conditions in winter.
Soil Requirements
Trisetum triflorum ssp. molle prefers soils that are well-draining and rich in nutrients. It can grow in a wide range of soil types, but it thrives best in sandy soils that have a pH range of 5.5 to 7.5. This species is also known to grow well in soils that are moderately moist, but it can also tolerate drought conditions for a short period.
Cultivation Methods
Trisetum triflorum ssp. molle is a warm-season grass species that prefers well-drained soils. It is commonly grown in prairies, meadows, and open woodlands. The plant grows best in full sun, but it can tolerate some shade. When planting, it is best to sow the seeds in early spring or late fall. For cultivation, loosen the soil to a depth of 6-8 inches and rake it smooth. Distribute the seeds evenly over the soil and cover them with a thin layer of soil. Water the seeds gently but thoroughly to moisten the soil. Keep the soil consistently moist until the seeds have germinated.Watering Needs
Trisetum triflorum ssp. molle requires moderate watering during the growing season. Water the plant deeply once a week, or when the top inch of soil feels dry to the touch. Avoid overwatering as it can cause root rot and other problems. In times of drought, it is recommended to irrigate with a soaker hose or drip system to conserve water.Fertilization
Trisetum triflorum ssp. molle does not require regular fertilization, as it is adapted to nutrient-poor soils. However, if your soil is lacking in nutrients, you can apply a well-balanced fertilizer in the early spring. Do not over-fertilize, as this can cause excessive growth that is more susceptible to disease and pests.Pruning
Trisetum triflorum ssp. molle requires little to no pruning, as it is a low maintenance plant. However, you can trim back any dead or damaged foliage in the spring before new growth begins. If you want to control the height of the plant, you can cut back the plant by a third in mid-summer. This will encourage branching and promote a denser growth habit.Propagation of Trisetum triflorum ssp. molle
Trisetum triflorum ssp. molle can be propagated by seed, division of clumps, or stem cuttings.
Propagation by Seed
Seeds of Trisetum triflorum ssp. molle can be sown directly into the ground in early spring when the soil temperatures start to warm up. The seeds should be sown in well-prepared soil that is moist but well-draining. Cover the seeds with a thin layer of soil and keep the area moist until germination occurs.
If sowing indoors, start 4-6 weeks before the last frost. Sow 1-2 seeds per cell in a seed-starter mix. Keep the soil moist and well-lit until germination.
Propagation by Division
Division of established clumps is a straightforward method of propagating Trisetum triflorum ssp. molle. Use a shovel or garden fork to dig up the clump in either fall or early spring. Then carefully divide the clump into smaller clumps with roots attached, and replant them in well-prepared soil.
Propagation by Stem Cuttings
Take stem cuttings in late spring or early summer. Cuttings should be approximately 4-6 inches long and taken from side shoots. Remove leaves from the bottom 2-3 inches of the stem and dip the cut end in rooting hormone. Plant each cutting in a well-draining soil mix and keep moist until rooted, which typically takes 2-3 weeks.
Common diseases of Trisetum Triflorum ssp. molle
Trisetum Triflorum ssp. molle is generally resistant to most diseases. However, it can experience some diseases that are common to other grass species.
Leaf spot is a common disease that can affect the blades of the plant. Fungi such as Drechslera and Bipolaris can cause brown lesions with yellow halos. Fungicides can be applied to the affected plant to prevent further spread of the disease.
Smut is another fungal disease that affects the culms and seed heads of the plant. It can cause the seed head to swell abnormally and can lead to the production of black spores. Infected culm should be removed and destroyed to prevent the occurrence of the disease.
Pests affecting Trisetum Triflorum ssp. molle
Trisetum Triflorum ssp. molle is susceptible to a wide range of pests that can cause significant damage to the plant.
Armyworms and cutworms are insect pests that feed on the plant's leaves and can cause significant damage to the plant. Insecticides can be applied to the affected plant to prevent further feeding and spread of the pests.
Aphids are also common pests that attack the plant's leaves. They can cause the leaves to curl or yellow, and they excrete a sticky substance that can attract other insects. Insecticidal soap or neem oil can be used to control the pest.
Grasshoppers are another pest that can feed on the leaves and seed heads of the plant. They can cause significant damage to the plant, especially during dry conditions. Insecticides can be applied to control the pest.
