Nepal Laburnum Piptanthus nepalensis
ABOUT
Piptanthus nepalensis, commonly known as Nepal laburnum or evergreen laburnum, has a distinctive appearance. Key features of this plant include its bright green, lance-shaped leaves that often provide a lush, dense canopy of foliage. The leaves are arranged alternately along the stems, contributing to a feathery texture and a visually pleasing contrast against the woody branches. In the flowering season, the Nepal laburnum produces striking yellow flowers that closely resemble those of the common laburnum, although they are part of a different botanical family. These flowers tend to form in loose clusters, which hang elegantly from the branches, often creating a vibrant display that can catch the eye from a distance. The petals have a soft texture and may possess a buttery hue, adding to the ornamental value of the plant. Following the flowering period, the plant produces pod-like fruits, which mature to a dark color. These pods add further interest to the plant's appearance, often persisting on the branches after the leaves have fallen, providing visual interest even in the dormant season. Overall, the Nepal laburnum presents a rounded or arching shape in its growth habit, contributing to a graceful silhouette in garden spaces or natural settings. Its evergreen nature ensures that it provides color and structure throughout the year, irrespective of the season.
About this plant
NamesFamily
Fabaceae
Synonyms
Nepal Laburnum
Common names
Baptisia nepalensis, Sophora tomentosa, Thermopsis nepalensis, Thermopsis tomentosa.
ToxicityTo humans
Piptanthus nepalensis, commonly known as the Nepal laburnum, is not typically regarded as a poisonous plant to humans. However, there is very limited information available on the toxicity of this specific species. It is always advisable to exercise caution and avoid ingesting plants that are not known to be safe or are not typically consumed as food. If Nepal laburnum is indeed toxic and someone ingests any part of the plant, they should seek medical attention if they experience any adverse symptoms.
To pets
Piptanthus nepalensis, commonly known as the Nepal laburnum, is not widely documented for its toxicity to pets. As with humans, there is a lack of specific information regarding the poisonous nature of this plant to animals such as dogs and cats. Nevertheless, it is generally recommended to prevent pets from ingesting plants not known to be safe, as they could potentially cause an adverse reaction. If a pet does consume any part of the Nepal laburnum and exhibits signs of poisoning, a veterinarian should be consulted immediately. Symptoms of poisoning in pets might include vomiting, diarrhea, lethargy, or more severe signs depending on the toxin and the amount ingested.
CharacteristicsLife cycle
Perennials
Foliage type
Evergreen
Color of leaves
Green
Flower color
Yellow
Height
6 feet (1.83 meters)
Spread
5 feet (1.52 meters)
Plant type
Shrub
Hardiness zones
7
Native area
Himalayas
Benefits
General Benefits- Ornamental value: Piptanthus nepalensis, commonly known as Nepal laburnum, has bright yellow flowers that add aesthetic appeal to gardens and landscapes.
- Shade provider: The canopy of the Nepal laburnum can offer shade in gardens and parks, creating cool areas during warm weather.
- Erosion control: With its root system, Nepal laburnum can help stabilize soil and prevent erosion on slopes or banks.
- Nitrogen fixer: Like many leguminous plants, it has the ability to fix nitrogen, which can improve soil fertility for surrounding plant life.
- Habitat for wildlife: The plant can offer food and shelter for various species of birds, insects, and other wildlife.
- Drought tolerance: Nepal laburnum is known for its ability to withstand periods of dry weather, making it suitable for xeriscaping.
Medical Properties- Antipyretic: Piptanthus nepalensis is traditionally used to reduce fever.
- Antitussive: The plant may be used to relieve cough.
- Anti-inflammatory: It is thought to have properties that reduce inflammation.
- Analgesic: The plant has been used to alleviate pain.
- Antioxidant: Contains compounds known for their potential to combat oxidative stress.
- Antimicrobial: May possess agents that inhibit the growth of microbes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Piptanthus nepalensis, commonly known as the Nepalese laburnum, has seeds that can be used as a substitute for soap, as they contain saponins which have cleansing properties.
- The wood of the Nepalese laburnum is moderately hard and can be used for making small tools and utensils, such as handles for knives or agricultural implements.
- The bark of the plant can be used for making ropes or strong threads as it has fibrous quality.
- Flowers of the Nepalese laburnum can be used as a natural dye for textiles, providing a yellow to green hue depending on the mordant used.
- The large, broad leaves can serve as impromptu plates or wrapping material for food, commonly practiced in some rural areas.
- During religious ceremonies in some cultures, the flowers might be used as offerings or decorations due to their bright and appealing color.
- In the art of bonsai, the Nepalese laburnum may be cultivated for its aesthetic appeal and its ability to adapt to pruning and shaping.
- The plant has potential as a source of nectar and pollen for bees, thus could be planted strategically by beekeepers to support honey production.
- The durable seed pods can be used in crafting, for example, as natural containers or in decorative arts.
- Dried branches and twigs can be used as a kindling for starting fires due to their ability to catch flame easily when dry.
Interesting Facts
Feng ShuiThe plant Piptanthus nepalensis, commonly known as the Nepal laburnum, is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe plant Nepal laburnum is not used in astrology practice.
Plant Symbolism- Piptanthus nepalensis, commonly known as Nepal laburnum, is often associated with resilience and strength due to its ability to thrive in harsh mountainous environments of the Himalayas.
- Its bright yellow flowers, which resemble those of the common laburnum, symbolize vitality and rejuvenation, suggesting the return of happiness or enlightenment.
- As a plant that blooms in spring, the Nepal laburnum is also seen as a sign of new beginnings and hope, symbolizing the idea of overcoming challenges and welcoming a fresh start.
WaterEvergreen Broadleaf's watering needs vary depending on the season. During the growing season in spring and summer, water the plant thoroughly once the top inch of soil feels dry, which might be once a week, providing about one to two gallons depending on plant size and environmental conditions. Reduce watering frequency in fall and winter, perhaps to every other week, maintaining slight moisture in the soil without waterlogging. Adequate drainage is key to prevent root rot. Monitor the soil and adjust accordingly to your home's humidity levels and temperature.
LightEvergreen Broadleaf prefers bright, indirect light. It thrives best when placed in a location that receives filtered sunlight, such as behind a sheer curtain near an east-facing or west-facing window. Direct afternoon sun should be avoided to prevent leaf scorch.
TemperatureEvergreen Broadleaf can tolerate a range of temperatures, ideally between 50 and 75 degrees Fahrenheit. It can survive minimum temperatures of around 45 degrees but should be protected from frost. This plant enjoys moderate temperatures and should not be exposed to extremes above 80 degrees or sudden temperature changes.
PruningPruning the Evergreen Broadleaf should be done to maintain its shape, remove any dead or damaged branches, and encourage bushier growth. Prune in late winter or early spring before new growth starts. Cut back up to one-third of the plant’s size if necessary. Prune sparingly, as not to overly stress the plant.
CleaningAs needed
SoilHimalayan laburnum prefers well-draining soil mixed with organic matter, such as leaf mold or compost, and a soil pH ranging from 6.0 to 7.5. A balanced mix can be created with equal parts loam, peat, and sharp sand to ensure good drainage and fertility.
RepottingHimalayan laburnum should be repotted every two to three years in the spring to prevent the roots from becoming pot-bound and to refresh the soil with nutrients that promote healthy growth.
Humidity & MistingHimalayan laburnum thrives in moderate to high humidity levels, ideally ranging between 40-60%. Avoid placing the plant in overly dry environments to maintain its health.
Suitable locationsIndoor
Place in bright, indirect light and protect from drafts.
Outdoor
Plant in partial shade to full sun, shelter from strong winds.
Hardiness zone
7-9 USDA
Life cyclePiptanthus nepalensis, commonly known as the Nepal Laburnum, begins its life cycle as a seed, which germinates in warm, well-drained soil, typically in spring. After germination, the seedling emerges and establishes a root system, followed by the development of foliage. As the plant matures, it develops into a shrub or small tree with distinctive compound leaves. During its flowering stage, often in late spring, it produces bright yellow, pea-like flowers which are attractive to pollinators. After pollination, the plant sets seed pods that mature, dry, and eventually release seeds, completing the reproductive cycle. Nepal Laburnum can live for several years, and it continues to grow and reproduce, with each growing season bringing a new cycle of flowers and seeds.
PropogationPropogation time
Spring to Summer
Propogation: For Piptanthus nepalensis, commonly known as Nepal Laburnum, the most popular method of propagation is by seed. The best time to sow seeds is in late winter or early spring. Sow the seeds in a well-draining soil mix, at a depth of about 1/4 inch (approximately 6 millimeters). It is important to maintain a consistent moisture level but avoid waterlogging. Seeds typically germinate in 2 to 4 weeks when kept at around 70°F (21°C). Once the seedlings are sturdy enough, they can be transplanted to individual pots or their final growing location, ensuring they have enough space to accommodate their growth.
