Overview
Lathyrus polymorphus, also known as variable everlasting-pea or many-flowered everlasting-pea, is a species of flowering plant in the pea family Fabaceae. This herbaceous perennial is native to eastern Asia, including China, Japan, and Korea. It has been introduced to other parts of the world as an ornamental plant.
Description
Lathyrus polymorphus is a climbing plant that can reach up to 1.5 meters in height. It has alternate, pinnate leaves that are about 8-12 centimeters long. The leaflets are oblong or obovate and have a glaucous appearance. The stems are hairy and often twine around objects for support. The flowers are pink or mauve and are arranged in racemes that can bear up to 20 flowers. The fruit is a pod that contains small, round seeds.
Uses
Lathyrus polymorphus is primarily grown as an ornamental plant for its showy flowers and attractive foliage. It is particularly popular in Japan, where it is used in traditional gardens and bonsai. However, some parts of the plant are also used in traditional Chinese medicine. The seeds are thought to have a diuretic effect and are used to treat urinary tract infections and edema.
Cultivation
Lathyrus polymorphus is a hardy plant that prefers a well-drained soil and a sunny or partially shaded location. It can be propagated by seed or by cuttings taken in the spring or autumn. The plant may need support as it grows, so it is advisable to provide a trellis or other structure for it to climb. During the growing season, the plant should be watered regularly, but care should be taken not to overwater and cause root rot. In areas with harsh winters, it may be necessary to cut back the plant and protect the roots with a layer of mulch.
Overall, Lathyrus polymorphus is a beautiful and versatile plant that has both ornamental and medicinal uses. Its attractive appearance and ease of cultivation make it a popular choice for gardeners and landscapers.Light Requirements
Lathyrus polymorphus is a sun-loving plant and requires full sunlight to thrive. It should be planted in an area with at least six hours of direct sunlight per day to ensure healthy growth and flowering.
Temperature Preferences
Although Lathyrus polymorphus can grow in a wide range of temperatures, it prefers cooler climates. It thrives in temperatures ranging from 50°F to 75°F, but can tolerate higher temperatures up to 85°F.
Soil Requirements
Lathyrus polymorphus grows best in well-draining soils that are rich in organic matter and nutrients. The ideal soil pH ranges from slightly acidic to neutral (pH 6.5 to 7.0). It can tolerate a wide variety of soil types, including loam, clay, and sandy soils, as long as they are well-draining.
Cultivation
Lathyrus polymorphus, commonly known as white everlasting pea, is an easy-to-grow perennial flowering plant that thrives in almost any type of soil and requires minimal care. The best time to plant seeds is in the early spring, directly into well-draining soil in a spot that receives at least six hours of full sun per day.
Watering Needs
This plant is drought-tolerant and only requires weekly watering in the absence of rainfall. However, it is important not to overwater the plant, as this can lead to root rot and other diseases.
Fertilization
White everlasting pea does not require fertilizer to thrive. However, you can add some slow-release fertilizer to the soil when planting to provide adequate nutrients for the plant's growth.
Pruning
Pruning is not necessary for white everlasting pea, as it grows naturally in a trailing, vine-like pattern. However, if desired, you can prune the plant lightly to encourage a bushier growth habit. Simply remove the tips of the plant to encourage lateral growth.
Propagation of Lathyrus polymorphus
Lathyrus polymorphus, commonly known as polymorphic everlasting pea or purple pea, is a hardy herbaceous perennial plant that belongs to the family Fabaceae. It is native to the Mediterranean region and is grown for its beautiful purple flowers and fragrant foliage. Propagating Lathyrus polymorphus can be easily done by several methods.
Propagating by Seeds
One of the easiest ways of propagating Lathyrus polymorphus is by seeds. Collect the seeds in late summer and sow them in pots or directly into the garden soil in autumn. The seeds should be at least 2-3cm deep in well-draining soil, and the area should be protected from strong winds and frost.
The seedlings should emerge in the spring, and after a year or two, they would be established enough to transplant. Be very careful when transplanting as the roots of the plant are quite delicate and can be easily damaged.
Propagating from Cuttings
Another way of propagating Lathyrus polymorphus is by cuttings. Cuttings should be taken from the plant in early summer. Use a sharp knife to take a 10-15cm long cutting with 2-3 nodes. Remove the lower leaves and dip the cut end into rooting hormone powder. Plant each cutting into a small pot filled with well-draining soil. Water thoroughly and place the pot in a warm, humid location out of direct sunlight.
The cuttings should root within 3-4 weeks, and after two months, they can be transplanted to the garden soil. Keep the young plants well-watered, especially during the hot summer months.
Propagating by Division
Dividing mature Lathyrus polymorphus plants is a way of propagating them. In early spring, when the plant is dormant, dig up the entire clump and gently separate it into smaller sections. Each section should have some roots and foliage. Replant each section into well-draining soil, water well, and protect them from direct sunlight until they establish themselves.
Propagation of Lathyrus polymorphus can be done by seeds, cuttings or division. It is an excellent way of producing more plants for your garden or sharing them with others.
Disease and Pest Management for Lathyrus Polymorphus
Lathyrus polymorphus, commonly known as the variable bush pea, can be affected by various diseases and pests. Here are some of the common pests and diseases known to infect this plant:
Diseases
1. Powdery Mildew: This disease is characterized by powdery white spots on the leaves and stems of the plant. It can weaken the plant and reduce its fruit production. To manage powdery mildew, remove infected parts of the plant and apply a fungicide.
2. Root Rot: Excessive watering can lead to root rot in Lathyrus polymorphus. This can cause the roots to become mushy and eventually decay. To manage root rot, reduce the frequency of watering and ensure that the soil is well-drained.
3. Bacterial Wilt: This disease causes the plant to wilt and die. The infected plant should be removed to prevent the spread of the disease.
Pests
1. Aphids: These pests can cluster at the tip of the plant, causing damage to the leaves by sucking the sap. Control aphids by spraying the plant with insecticidal soap.
2. Spider Mites: These tiny pests can cause the leaves to turn yellow and fall off. Use a miticide or insecticidal soap to control spider mites.
3. Slugs and Snails: These pests can leave slime trails and cause holes in the leaves. One way to manage slugs and snails is to handpick them off the plant. Alternatively, a slug and snail bait can be used around the plants to deter them.
Remember to always monitor your Lathyrus polymorphus regularly for signs of disease or pests. Early detection and treatment can prevent the spread of the problem and help keep your plant healthy.
