Sigesbeckia orientalis — a medium houseplant, prefers partial sun light
SPECIMEN · FROM THE LIBRARY
Sigesbeckia orientalis

Sigesbeckia Orientalis

Updated · 160 observations
ON THIS PLANT

Sigesbeckia orientalis, commonly known as Indian weed or common St. Paul's wort, is a species of flowering plant in the family Asteraceae. It is a small, upright, sparsely branched shrub with yellow flowers and widespread in Asia, Africa and Australia.

A note from PlantMom

Indian weed is fairly disease-resistant and typically does not suffer from illnesses. Still, it can be affected by pests and diseases that exist nearby. Such infections are generally mild. Regarding care, the plant needs a moderate amount of upkeep. Regular pruning is necessary to keep it looking good and to encourage healthy growth. Applying fertilizer can also aid in boosting flowering. Indian weed is appropriate for anyone who has outdoor space, like a garden or patio, and it does not demand extensive gardening experience. It may need extra attention when cultivated indoors.

— PlantMom
CARE GUIDE

How to keep Sigesbeckia Orientalis.

Light

The indian weed does best when exposed to moderate sunlight. Although it can survive in low-light conditions, that often causes limited growth. Excessive exposure, however, doesn't damage the plant but stops it from reaching its full potential.

Water

Indian weed thrives best in regions with consistent weekly rainfall, as it prefers steady moisture but can tolerate short periods of dryness. To replicate its natural habitat, it benefits from weekly watering. This herbaceous plant, found in temperate regions, has adapted to seasonal variations in water availability, allowing it to grow resiliently through both wet and dry cycles.

Temperature

Indian weed originates from climates with temperatures between 68 and 95 °F (20 to 35 ℃). The plant favors warmer conditions and may require temperature adjustments in cooler seasons to maintain optimal growth.

Fertilizer

Indian weed benefits from regular, diluted fertilizer applications to encourage healthy leaf growth. You should feed Indian weed about once a month during the summer. Nitrogen is vital for foliage, and providing nitrogen-rich sources helps Indian weed thrive.

Pruning

Indian weed is a robust herb known for its sprawling growth and vibrant yellow flowers. To manage its height and encourage a bushier form, it is best to prune the plant from early to late spring. Be sure to remove any damaged parts to support healthy growth, improve air circulation, and minimize the risk of pests. This will also help maintain an attractive appearance.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual
Genus
Sigesbeckia
Family
Asteraceae
Hardiness Zone
9
Mature Height
0.2 m to 1.07 m
Mature Spread
0 cm to 1 cm
Leaf Color
Green, Dark Green
Leaf Type
Semi-evergreen
Flower Color
Yellow
Flower Size
0.25 cm to 0.51 cm
Bloom Time
Mid summer, Late summer, Early fall, Mid fall
Planting Time
Spring, Summer, Autumn
Harvest Time
Fall
Native Area
Sri Lanka, Turkey, Malaysia, India, Angola, Madagascar, Eritrea, Pakistan, Yemen, Zimbabwe, Uzbekistan, Indonesia, Cameroon, Mozambique, Ethiopia, South Korea, Nepal, Malawi, Tajikistan, Philippines, Zambia, Laos, China, Kazakhstan, Vietnam, Myanmar, Japan, Bhutan, Iran, Thailand
ALSO KNOWN AS

Other names.

en Indian-weed en Stickyweed en Eastern St. Paul's-wort en Eastern St Paul's-wort en Yellow Crown-head en Small yellow crownbeard en St Paul's-wort en Common St. Paul's wort en Oriental Siegesbeckia en Siegesbeckia en Sigesbeckia
FREQUENTLY ASKED

Reader questions.

How should I water my Indian weed plant?

There are a few ways to water Indian weed, such as using a garden hose, watering can, or other common watering tools. This type of plant is not too particular and can survive on rainwater, tap water, or filtered water. It's best to avoid watering from above as it can harm the leaves and flowers and potentially cause disease. Setting up a drip irrigation system is often the most effective method for watering Indian weed as the water is distributed evenly and directly to the soil. If you have Indian weed in a container, you can use a cup, watering can, or tap to water directly into the soil.

What are the sunlight requirements for Indian weed?

Indian weed, or Sigesbeckia orientalis, thrives under various sunlight conditions but has specific needs to reach its full potential. For partial sun, about 3-6 hours of sunlight is optimal, while full shade means less than 3 hours of sunlight. However, too much or too little sunlight can affect the plant's growth. Observing the movement of sunlight through your garden helps in choosing spots that provide a balance of light and shade, ensuring the plant's happiness.

What native climate is best for growing Indian Weed (Sigesbeckia orientalis)?

Indian Weed, botanically known as Sigesbeckia orientalis, thrives in climates where the temperature range is between 68 to 95°F (20 to 35°C). This plant prefers warmer temperatures and may require adjustments during cooler seasons to ensure optimal growth. While it exhibits some cold tolerance and usually doesn't need extra protection above 0°C, measures such as wrapping the plant with plastic film, fabric, or other materials might be necessary when temperatures are expected to drop below freezing. It's important to remove these protections once temperatures rise again.

What should I do if I give too much or too little water to my Indian weed?

If you notice that your Indian weed is lacking moisture, the solution is simple: water it more regularly. Overwatering, on the other hand, can be a more serious problem, especially if you don't catch it early. Overwatered Indian weeds can develop diseases that can lead to their decline and death. To prevent this, it's important to find a suitable growing location with plenty of sunlight to help dry the soil and good drainage to prevent waterlogging. If you are overwatering an Indian weed in a pot, consider transferring it to a new pot with better drainage. When repotting, use loose soils and a pot that drains efficiently.

How does artificial lighting affect Indian weed growth?

Artificial lighting can play a crucial role in the growth of Indian weed, especially when natural sunlight is insufficient. Indoor plants benefit from artificial lighting, which can promote faster and healthier growth. LED lights are recommended due to their ability to provide specific wavelengths needed by the plants. The intensity of light required varies: full sun plants need 30-50W/sq ft, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight, and provided for 8-12 hours per day.

How does Indian Weed react to low temperatures?

Indian Weed has a moderate tolerance to low temperatures and performs best when kept above 20°C. During the winter months, it's important to maintain temperatures above 0°C to ensure the plant's health. Exposure to temperatures below -5°C can cause the leaves to droop; while they may recover in milder cases, severe exposure leads to wilting and eventual leaf drop. To protect Indian Weed from cold damage, frost-damaged parts should be trimmed off. Additionally, wrapping the plant in materials like non-woven fabric or cloth and constructing a wind barrier can provide protection against cold winds.

How often should I give water to my Indian weed?

Indian weed requires regular watering throughout its growing season. In spring, it is recommended to water the plant once a week. As the season progresses and becomes warmer, the watering rate might need to be increased to two or three times per week. However, exceeding this rate can be harmful to the Indian weed. It is important to keep the soil relatively moist, but not wet, regardless of the watering frequency. When the Indian weed is in a pot, watering needs to be adjusted. The soil in a pot can heat up and dry out faster compared to ground soil. Therefore, watering a container-grown Indian weed should typically be done a few times per week, rather than just once per week for an in-ground plant.

What are the symptoms of inadequate light in Indian weed?

Symptoms of light deficiency in Indian weed include small, mature leaves; leggy or sparse growth; faster leaf drop; slower or halted growth; lighter-colored new leaves; chlorosis; sunscald; leaf curling; wilting; and leaf scorching. These symptoms indicate that the plant is not receiving the optimal amount of sunlight for its growth and health.

What steps should be taken if Indian Weed experiences high temperatures?

In the summer, it's crucial to ensure that Indian Weed's environment remains below 35°C. Temperatures exceeding 38°C can lighten the color of the leaves, dry out and wither the leaf tips, cause leaf curling, and increase susceptibility to sunburn. When dealing with sunburned or dried-up parts, they should be trimmed away. To mitigate the impact of high temperatures, the plant should be moved to a shaded location, especially during the midday and afternoon sun, or covered with a shade cloth. Additionally, watering in the morning and evening helps keep the soil moist, further protecting the plant.

How much water does my Indian weed plant need?

To determine how much water to give your Indian weed, you have a few options. Some gardeners prefer to check the soil for moisture and water until the top six inches feel moist. Another approach is to use a specific measurement, such as about two gallons per week, considering factors like heat and soil dryness. However, be cautious not to overwater if your plant needs less. For container-grown Indian weed, you should water enough to moisten all dry soil layers. You can test moisture by sticking your finger in the soil or observe a slight trickle when water exits the pot's drainage holes.

What solutions can help improve Indian weed growth in insufficient light conditions?

To improve Indian weed growth in insufficient light conditions, consider moving the plant to sunnier spots gradually, increasing sunlight exposure to 3-6 hours daily. For indoor plants that are large or not easily movable, artificial lighting such as desk or ceiling lamps, or professional grow lights, can provide additional light. Outdoors, gradual relocation to areas with better sunlight and minimizing obstructions like pruning branches can help. For ground plants, transplanting during the dormant period to sunnier locations with good drainage is beneficial. Remember, while parts of the plant affected by insufficient light may not recover, new growth should be healthy with improved light conditions.

How can I know if I'm giving enough water to my Indian weed?

Avoiding overwatering your Indian weed can be somewhat challenging. On one hand, you need to moisten the soil weekly due to their deep roots. On the other hand, Indian weed is highly prone to root rot, which can cause the plant to turn brown. Underwatering is less likely since these plants can survive without additional watering for a while. However, if you go too long without watering, the plant will likely wilt and develop dry leaves.

PLATES
Sigesbeckia orientalis leaf
PLATE 01 · leaf
Sigesbeckia orientalis leaf
PLATE 02 · leaf
Sigesbeckia orientalis flower
PLATE 03 · flower
Sigesbeckia orientalis flower
PLATE 04 · flower
Sigesbeckia orientalis fruit
PLATE 05 · fruit
Sigesbeckia orientalis bark
PLATE 06 · bark
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