Overview of Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus, commonly known as variable-leaved everlasting pea or mountain everlasting pea, is a perennial herb that belongs to the Fabaceae family. It is native to the western North America region, specifically found in Alaska, California, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming.
Appearance of Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus
Variable-leaved everlasting pea is an erect or trailing plant that can grow up to 1 meter tall. Its stem is hairy and possesses twining branches with small leaves. The leaves have a variable shape, giving the plant its common name, with a size of about 1 to 6 cm long. The flowering period of Lathyrus polymorphus ssp. polymorphus var. polymorphus is from July to September. It produces numerous showy, pink to purple flowers that grow in clusters on stalks that are 5 to 25 cm long. The fruits of the plant are slender pods that are about 2 to 5 cm long and 2 to 4 mm wide.
Uses of Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus
Lathyrus polymorphus ssp. polymorphus var. polymorphus has some traditional medicinal uses, including pain-relieving properties that could help people with migraines, menstrual cramps, and other ailments. Along with its therapeutic benefits, various parts of the plant, such as the root, leaves, and flowers, can be used to make dyes of blue or green shades. The plant is also a lovely addition to any garden due to its bright and showy flowers that attract pollinators like bees and butterflies.
Overall, Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus is a beautiful and useful plant that can be a great addition to any landscape. However, individuals should be mindful of its potential harmful effects if consumed in large quantities.
Light Requirements
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus grows best in full sun to partial shade. In areas with hot summers, it may benefit from some shade during the hottest parts of the day.
Temperature Requirements
This plant is adaptable to a wide range of temperatures and can tolerate both heat and cold. However, it prefers moderate temperatures and is most productive when grown in a cooler climate with mild summers and moist winters.
Soil Requirements
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus grows best in well-drained soils with a slightly acidic to neutral pH range of 6.0-7.0. It can tolerate a range of soil types, including sand, loam, and clay, but it needs to be kept moist for optimal growth. The soil should be enriched with organic matter and fertilized periodically to maintain its fertility.
Cultivation
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus, also known as variable-leaved perennial peavine, prefers full sun to part shade. It thrives in well-drained soils with neutral to slightly alkaline pH levels. The plant is hardy and can survive in cold regions with temperatures as low as -40 degrees F.
Watering Needs
The plant requires moderate watering during the growing season. The roots are susceptible to root rot, so well-draining soils are essential. Overwatering should be avoided, especially during the dormant period when the plant is more susceptible to root diseases. The frequency of watering will depend on environmental factors such as humidity and rainfall.
Fertilization
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus does well with a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. The fertilizer should be applied once a month during the growing season. Before fertilizing, conduct a soil test to determine the nutrient levels and adjust accordingly.
Pruning
Pruning should be done in early spring before the plant starts to bloom. Remove any dead or damaged stems and branches. To promote bushier growth, pinch back the tips of new growth. If the plant becomes too dense, thin out some of the branches to improve air circulation and prevent diseases.
Propagation of Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus, commonly known as the low everlasting pea, is a herbaceous perennial plant that produces beautiful yellow flowers.
Seed propagation
One of the common methods of propagating Lathyrus polymorphus is through seeds. The seeds should be sown in the spring or fall in a seed tray filled with a well-draining potting mix. The tray should be placed in a warm, bright location and kept moist. Once the seedlings have developed a couple of true leaves, they can be transplanted into pots and grown to maturity.
Division propagation
The low everlasting pea can also be propagated through division, which involves separating the plant's roots and replanting them. This is best done in the spring or fall when the plant is not actively growing. First, the plant should be dug out of the ground and the roots should be gently divided into smaller segments. Each segment should have some roots attached and at least one healthy shoot. The segments can then be planted in well-draining soil and kept moderately moist until they are established.
Cuttings propagation
Another method of propagating Lathyrus polymorphus is through cuttings. This involves taking stem cuttings from a mature plant and rooting them in a growing medium. The cuttings should be about 4-6 inches long, and the leaves at the base should be removed. The cuttings can be dipped in rooting hormone and placed in a pot filled with a well-draining growing medium. The pot should be kept moist and placed in a warm, bright location. Once the cuttings have rooted, they can be transplanted into bigger pots or planted in the ground.
Whichever propagation method is used, it is important to ensure that the plants are grown in well-draining soil and kept moist until they are established. With proper care, Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus can be propagated successfully and provide beautiful blooms for years to come.
Disease Management
Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus is susceptible to several diseases, including powdery mildew, rust, and stem rot. Powdery mildew appears as a gray or white powdery substance on the leaves, and stem rot cause the plant to wilt and eventually die. Rust causes yellow or orange patches on the leaves.
To manage these diseases, it is important to maintain proper plant hygiene by removing any diseased plant material and disposing of it properly. Avoid overhead watering to prevent the spread of powdery mildew. Ensure adequate air circulation by spacing the plants properly. Utilize fungicides to control rust and stem rot infections.
Pest Management
Aphids, spider mites, and slugs are common pests that can affect Lathyrus polymorphus Nutt. ssp. polymorphus var. polymorphus. Aphids and spider mites both feed on the sap of the plant, causing stunted growth and yellowing of the leaves. Slugs eat the leaves and stems of the plant, causing holes and damage to the plant.
To manage these pests, it is important to monitor the plants regularly and remove any affected parts immediately. Utilize insecticidal soap or neem oil to control aphids and spider mites. Set up slug traps and handpick any visible slugs. Encourage natural predators of these pests, such as ladybugs and lacewings, to keep the population under control.
