Top 20 Most Common Weeds in Malaysia

Malaysia's humid climate and fertile soil provide an optimal breeding ground for a variety of garden weeds. Commonly challenging presences in domestic landscapes include Asthma-plant, Artillery plant, and Chamber bitter. These weeds are adept at flourishing in the local conditions, often outcompeting native or cultivated plants and necessitating persistent control measures. Gardeners in Malaysia typically face a continual battle to keep these invasive weeds at bay.

Most Common Weeds

1. Asthma-plant

Asthma-plant (Euphorbia hirta) is a ground-hugging spurge weed whose branches can grow to 61 cm long. It blooms from summer through early fall, dying off after the first frost. A milky sap will seep from broken stems or leaves. It can be a nuisance weed that reproduces rapidly.

Growth Rate:

Rapid

2. Artillery plant

The artillery plant is often utilized as a groundcover or an ornamental in many landscapes. It's commonly named the "artillery plant" because the males generally produce pollen in an explosive way. It grows best in a humid environment in partial shade or indirect sunlight. It's a particularly popular plant in indoor rock gardens.

3. Pepper elder

Pepper elder (Peperomia pellucida) is a perennial flowering plant that blooms all year. The entire pepper elder plant is edible and can be eaten raw or cooked.

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4. Chamber bitter

Chamber bitter is blooms in summer. Its striking branched leaf pattern makes it an attractive ornamental, but it is a weedy plant that takes careful management to stop its seeds from spreading to unwanted areas. It is considered invasive in the southern United States.

Growth Rate:

Moderate

5. Lilac Tasselflower

Lilac Tasselflower (Emilia sonchifolia) is an annual herb that will grow to 61 cm tall. Native to China and the western Pacific, it is considered a weed in most regions of the United States. It grows in full sun in open areas and features edible leaves and lavender pink flowers. Flowers are followed by seed heads with white, fluffy seeds that are easily dispersed by the wind.

6. Culantro

Culantro, not to be confused with cilantro or coriander, is a culinary herb with a strong flavor used in dishes across East Asia, Latin America, and the Caribbean. Cultivation is increasing as demand for this herb grows in economies around the world. In tropical areas, this herb can be grown as a perennial, but it will likely only grow as an annual in colder areas.

7. Common purslane

Portulaca oleracea, colloquially known as common purslane, is an annual succulent species with reddish stems and tiny yellow, five-petal flowers. It is used for culinary purposes in various parts of the world, most often raw, in salads. Common purslane is also a good companion plant for crops that thrive in moist soils.

Growth Rate:

Rapid

8. Creeping woodsorrel

Creeping woodsorrel (Oxalis corniculata) is a flowering herb which grows aggressively. The leaves have a lemony flavor and are often made into tea that's rich in vitamin C. However, if ingested in large amounts the oxalic acid for which the genus is named can begin to block the body's calcium absorption.

9. Cutleaf groundcherry

Physalis angulata is an annual plant belonging to the nightshade family Solanaceae. It has dark green leaves that are roughly oval, and often have tooth shapes around the edge. The flowers are a pale yellow and the yellow-orange fruits are wrapped inside a balloon-like calyx, which is toxic and should not be eaten.

10. Water hyacinth

Water hyacinth (Eichhornia crassipes) is a fast-growing flowering plant species with ovular, waxy leaves. Water hyacinth is listed as a federal noxious weed in the United States. This species is invasive to ponds, lakes, rivers and other wetland habitats. It forms dense, floating mats of vegetation that restricts light to underwater environments.

Growth Rate:

Rapid

11. Blue porterweed

Blue porterweed is native to the Caribbean and considered an invasive species in many areas outside.

12. Goosegrass

When there is a famine or a lack of food, the seeds of goosegrass are eaten. This agricultural weed is utilized for cultivated crops, animal feed, and golf courses. It is classified as an environmental weed in various nations. Some Asian countries employ parts of this plant as herbal medicine.

Growth Rate:

Rapid

13. Mexican fireplant

Mexican fireplant is native to tropical America, but it has been naturalized in other tropical and subtropical regions in the world. *Euphorbia heterophylla* is a poisonous plant to humans and livestock. It contains a toxic milky sap which can cause strong skin irritation.

14. Common plantain

While native to Europe, the common plantain was one of the first plants to reach North America through early European explorers. Native Americans have referred to Plantago major as 'white man's footprint', as it disrupted many local ecosystems by its introduction.

Growth Rate:

Moderate

15. Oriental false hawksbeard

Oriental false hawksbeard (Youngia japonica) is a plant species native to eastern Asia. The oriental false hawksbeard grows throughout regions all over the globe, and is considered an invasive weed. This species grows especially well in disturbed areas, lawns, and roadsides.

Growth Rate:

Rapid

16. Crown Flower

The crown Flower has beautiful flowers that are used to make leis and were a favorite of the last queen of Hawaii. The outer petals of this flower curl back, and reveal what looks like a crown inside. The sap of this plant may cause skin irritation and can be considered toxic.

17. Common mugwort

Common mugwort (Artemisia vulgaris) is an herbaceous plant often found in nitrogen-rich soils. The plant's scent is reportedly a mild insect repellant. Common mugwort is used as an offering in Nepalese temples. Tradition holds that it has cleansing properties, so believers also use it to sweep their floors to give them both a spiritual and physical cleaning.

Growth Rate:

Rapid

18. Redflower ragleaf

Crassocephalum crepidioides is a slightly succulent herb that can grow up to 1.8 m tall. The plant has mucilaginous and fleshy leaves, though its stems are eaten as a vegetable. It's largely prominent in tropical Africa.

19. Arrowleaf sida

Arrowleaf sida (Sida rhombifolia) is a perennial plant with delicate yellow blooms on stiff, almost woody stems. The stems are used to make brooms, giving it the common name "broom jute." It is also used to make cord and twine.

20. Pigeonberry

The pigeonberry is a vine-like herb that can reach heights of 40 to 200 cm. It produces a bright red berry as a fruit that is tested to be safe to consume. The juice made from these berries was once used as a dye and ink.

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Malaysia's hot, humid climate and abundant rainfall create an ideal environment for the proliferation of diverse flora, including toxic plants. The lush landscapes nurture species with inherent toxins that pose risks to humans and animals alike. In this region, certain plants such as , , and are prevalent, underscoring the need for awareness and caution in natural settings.

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Most Common Trees

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Most Common Plants

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