Lespedeza bicolor
SPECIMEN · FROM THE LIBRARY
Lespedeza bicolor

Lespedeza Bicolor

Updated · 421 observations
ON THIS PLANT

Lespedeza bicolor, commonly known as bicolor lespedeza, is a deciduous shrub belonging to the Fabaceae family. Native to eastern Asia, it can grow up to 6 feet tall and wide. The plant has a spreading habit with arching branches covered in small green leaves. In late summer, it produces clusters of small pink or white flowers that attract bees and butterflies.

Bicolor lespedeza thrives in full sun or partial shade and well-drained soil. Though drought-tolerant once established, it benefits from regular watering during the growing season. This plant can serve as a specimen shrub in mixed borders or as an informal hedge.

Several cultivars of bicolor lespedeza are available, featuring a variety of flower colors. Notable examples include 'Yakushima Pink' with pink flowers, 'White Fountain' with white flowers, and 'Summer Beauty' with deep pink flowers.

The plant's seeds are used for erosion control on slopes due to its deep root system, which helps stabilize the soil. Additionally, it provides food for wildlife such as deer and rabbits and is resistant to most pests and diseases.

Overall, Lespedeza bicolor is an attractive ornamental shrub suitable for various landscape settings due to its low maintenance requirements. It also offers ecological benefits, such as erosion control and habitat creation for wildlife like deer and rabbits.

A note from PlantMom

Shrub lespedeza is fairly resistant to disease and generally not susceptible to illnesses. In terms of maintenance, this plant is relatively low-maintenance. When planted outdoors it needs only occasional watering, and larger plants typically do not require pruning. Smaller plants, however, should be pruned after they finish blooming. Shrub lespedeza is well suited to anyone with an outdoor area, such as a garden or deck, and does not call for a lot of gardening experience.

— PlantMom
CARE GUIDE

How to keep Lespedeza Bicolor.

Light

Shrub lespedeza does best with plenty of sunlight during the day, though it can also do well in places with moderate sun. Too much or too little light can impede its growth. Since it is native to open areas, shrub lespedeza is accustomed to substantial sun exposure.

Water

Shrub lespedeza, a plant native to East Asia, thrives in environments with moderate humidity and well-drained soil. Once it is established, it becomes drought-tolerant and only needs watering every two weeks. Typically grown outdoors, it usually receives enough water from natural rainfall, reducing the need for extra irrigation during the growing season.

Humidity

This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.

Temperature

Shrub lespedeza is native to regions with temperature conditions that favor mild winters and hot summers. The plant prefers temperatures from 41 to 90 ℉ (5 to 32 ℃) but can tolerate higher or lower temperatures when necessary. In colder times, it is recommended to keep temperatures above 32 ℉ (0 ℃) to prevent cold damage.

Fertilizer

Fertilize your Shrub lespedeza in early spring to encourage healthy growth. Consistent fertilization improves overall health, producing vigorous growth, greater tolerance of harsh conditions, and increased resistance to pests and diseases. Keep a regular fertilization schedule for your Shrub lespedeza to maintain vibrant, deeply colored foliage and a lush appearance.

Pruning

Shrub lespedeza is a deciduous plant characterized by its arching branches and vibrant flowers. To maintain its health and appearance, prune the shrub in early spring. Remove any dead or weak branches and trim any overgrown shoots. Additionally, thin out crowded areas to improve air circulation, which enhances both the plant's vitality and aesthetic appeal, promoting vigorous growth throughout the season.

Pot & Repot

When repotting shrub lespedeza, pick a pot 1-2 inches (2.5–5.1 cm) larger that provides good drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly below the rim of the flower pot. Water thoroughly after repotting and place in a warm spot with indirect sunlight.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Lespedeza
Family
Fabaceae
Hardiness Zone
4-7
Mature Height
0.91 m to 3.05 m
Mature Spread
1.83 m to 2.44 m
Leaf Color
Green, Blue
Leaf Type
Deciduous
Flower Color
Purple, Lavender
Flower Size
2.54 cm
Bloom Time
Mid summer
Planting Time
Spring, Winter, Summer
Harvest Time
Mid summer, Late summer
Native Area
Russia, Japan, Mongolia, Koppen, South Korea, China
ALSO KNOWN AS

Other names.

en Shrubby lespedeza en Shrub lespedeza en Bicolored lespedeza en Bicolor lespedeza en Bush Clovers en Chinese bush-clover en Chinese lespedeza en Lespedeza en Perennial lespedea en Sericea Lespedeca en Silky bush-clover en Two-coloured bush-clover en Bicoloured lespedeza en Shrubby bush clover
FREQUENTLY ASKED

Reader questions.

How should I water my Shrub lespedeza?

To ensure excellent root development, place a garden hose at the base of the plant. Be careful not to directly spray the leaves. If the plant is outdoors and exposed to direct sunlight, the leaves will need more watering. Use bubblers or soaker hoses to moisten the roots of each plant. When adding or removing plants, soaker hoses that cover the entire garden or bed can help the roots grow deep. After watering, make sure to drain any excess water and wait for the soil to dry before watering again. To prevent diseases, water at ground level instead of spraying the leaves. On sunny days, it can be helpful to spray the entire bush with water. Whether the plant is potted or in the ground, it is important to remember that Shrub lespedeza prefers deep watering rather than light sprinkling.

Why should I put fertilizer on my Shrub lespedeza plant?

No matter which type of Shrub lespedeza you have, regular fertilization is important for the plant's overall health. Providing the right nutrients fosters stronger growth and helps the Shrub lespedeza withstand challenging conditions and resist diseases and pests. Since the foliage is a prominent feature of the Shrub lespedeza, it's crucial to maintain its health. This involves establishing and sticking to a regular fertilization routine tailored to your specific Shrub lespedeza. Following this schedule will result in vibrant and lush leaves with deep color.

What are the sunlight requirements for shrub lespediza?

Shrub lespedeza requires a good amount of sunshine to thrive optimally but can also grow well in moderate sunlight conditions. It is essential that the plant receives more than 6 hours of sunlight for full sun conditions, and about 3-6 hours of sunlight for partial sun conditions. It is adapted to significant exposure to sunlight due to its native habitat in open areas. However, too much or too little sunlight can negatively impact its growth. Observing how sunlight moves through your garden and choosing spots with the ideal balance of light and shade are crucial for the plant's health.

What are the ideal temperature conditions for Shrub Lespedeza?

Shrub Lespedeza, scientifically known as Lespedeza bicolor, thrives in environments with mild winters and hot summers. It prefers a temperature range between 41 to 90 °F (5 to 32 °C), though it can endure temperatures outside this range as necessary. To prevent cold damage during the winter, it's advised to keep the environment above 32 °F (0 °C). This plant is notably cold-tolerant and doesn't generally require additional frost protection. Nonetheless, watering the plant generously before the first freeze of autumn is beneficial to ensure the soil stays moist and enters winter in a frozen state, which helps in preventing drought and water scarcity throughout the winter and into early spring.

What should I do if I give Shrub lespedeza too much or too little water?

Overwatering your Shrub lespedeza can cause yellowing, dropping, and wilting leaves, as well as a dull, unhealthy appearance and mushy stems. If you notice these signs, try adjusting your watering schedule. However, wilting can also be a sign of under watering. Under these circumstances, the leaves may turn crispy and dry, while overwatered leaves will be soft and wilted. When the soil is dry and a simple watering is not enough, give the plant a thorough watering. While this can help the Shrub lespedeza recover, it may still have yellow, dry leaves due to root damage for a few days. Once the plant returns to normal, the yellowing of leaves will stop. When you have the Shrub lespedeza indoors, always check the moisture levels in the pot and avoid overwatering. Keep an eye out for black spots, as this could be a sign of excess moisture. If you see these spots, let the soil dry in the pot by refraining from watering for a few days. Overwatering can lead to root rot, so if you notice discolored and slimy roots, consider transferring the plant to a different pot. It is important to prevent root rot by avoiding overly soggy soil. When planting your Shrub lespedeza outdoors, make sure to dig a little deeper. If you find that the soil is too dry when checking with your fingers, it may indicate under watering. Adequate watering is necessary to help the plant recover in this case.

When should I fertilize my Shrub lespedeza?

To ensure the healthy growth of your Shrub lespedeza, it is best to fertilize it in late winter or early spring. This will provide the necessary nutrients for growth when the weather turns warmer. In warm climate regions, it can also be helpful to provide an additional fertilizer feeding in early fall. This not only adds nutrients for the following growing season but also helps the Shrub lespedeza become more hardy and survive the cold winter without foliage damage. Fertilizing earlier will allow the new branches to grow and withstand the winter cold.

Can artificial lighting be used for shrub lespedeza and how?

Yes, when natural sunlight is insufficient, particularly in winter or less sunny spaces, artificial lighting can be a vital solution for promoting the growth of indoor plants, including shrub lespedeza. LED lights are recommended as they can be customized to provide specific wavelengths that plants need. Full sun plants require 30-50W/sq ft, partial sun plants need 20-30W/sq ft, and full shade plants require 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant to mimic natural sunlight. Additionally, the duration of artificial light exposure should mimic natural daylight hours, typically 8-12 hours per day.

How should Shrub Lespedeza be cared for in low temperatures?

Shrub Lespedeza is highly cold-tolerant, capable of withstanding winters where temperatures do not drop below -30°C (-22°F). Despite this tolerance, exposure to temperatures below this threshold may not immediately show detrimental effects during the winter, but by spring, the branches might become brittle and dry, and new shoots may fail to emerge. The recommended solution for this situation is to prune away any dead branches that have not produced new leaves by spring, promoting healthier growth and recovery from cold exposure.

How often do I need to water my Shrub lespedeza?

The Shrub lespedeza prefers deep watering, particularly when planted in pots where soil dries out faster. Watering should be done once every 3 to 5 days in cold regions, preferably in the morning when the soil is dry. To determine when watering is needed, check the top 2-3 inches of soil. If it is dry, give the plant a full watering. On hot days, check the moisture daily as the soil can dry out quickly. In a garden, irrigation is necessary, especially in hot climates where watering once a week is recommended. Pay attention to the soil moisture and avoid adding water if the soil is already wet from rainfall. When growing outdoors, add 3 to 4 inches of mulch to conserve water. Sandy soil requires more frequent watering, while clay soil can go 2-3 days without water. To keep track of watering, mark the dates on a calendar and be alert for drooping leaves, which may indicate a need for watering.

When is it best to not fertilize my Shrub lespedeza?

To keep your Shrub lespedeza healthy, avoid fertilizing it during certain times of the year. The first time to skip is during the early and mid-winter when the plant is dormant and doesn't require feeding. It's also not recommended to fertilize during late spring and summer when the weather is hotter and drier. Fertilizing during this time can have a negative effect on your Shrub lespedeza. Instead, stick to fertilizing in early spring and early fall to prevent any potential issues.

What are the signs of insufficient light in shrub lespedeza?

Shrub lespedeza may exhibit signs of light deficiency when placed in rooms with suboptimal lighting. Symptoms include smaller new leaves compared to mature ones, leggy or sparse growth due to longer spaces between leaves or stems, faster leaf drop as a resource conservation measure, slower or halted growth, lighter-colored new leaves due to insufficient chlorophyll, and conditions like chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These symptoms result from either inadequate sunlight or excessive exposure.

What steps should be taken if Shrub Lespedeza experiences high temperatures?

In conditions where the temperature exceeds 32°C (90°F), Shrub Lespedeza may suffer from significant leaf drop, and in extreme cases, the plant could wither and die. To combat this, it's important to trim away any sunburned and dried-up parts of the plant. Additionally, moving the plant to a location with shade from the midday and afternoon sun, or utilizing a shade cloth, can provide necessary protection. Maintaining soil moisture is also crucial, so watering the plant in the morning and evening is recommended under these conditions.

PLATES
Lespedeza bicolor leaf
PLATE 01 · leaf
Lespedeza bicolor leaf
PLATE 02 · leaf
Lespedeza bicolor flower
PLATE 03 · flower
Lespedeza bicolor flower
PLATE 04 · flower
Lespedeza bicolor fruit
PLATE 05 · fruit
Lespedeza bicolor fruit
PLATE 06 · fruit
ALSO IN THE LIBRARY

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