Top 19 Most Common Weeds in Eritrea

Eritrea's arid to semi-arid climate, punctuated by occasional rainfall, fosters a diverse array of vegetation, including persistent garden weeds. Among these, Devil's trumpet, Johnson grass, and Red baneberry are notably prevalent, challenging gardeners with their robust growth and adaptation to local conditions. These weeds compete fiercely with cultivated plants, necessitating diligent management to maintain balanced and healthy gardens across Eritrean landscapes.

Most Common Weeds

1. Devil's trumpet

Devil's trumpet (Datura metel) is a highly toxic annual species. Devil's trumpet ingestion can cause headaches, hallucinations, coma, and death. In spite of its toxicity, it is sometimes grown as an ornamental flower.

Growth Rate:

Slow

2. Johnson grass

Experts consider johnson grass (Sorghum halepense) to be one of the ten worst weeds in the world. If frost or heat causes the plant to wilt, it can produce enough hydrogen cyanide to kill livestock. It grows at such a prodigious rate, it can choke out other crops. It’s named after Colonel William Johnson, an Alabama plantation owner who sowed lots of its seed around 1840.

Growth Rate:

Rapid

3. American black nightshade

American black nightshade (*Solanum americanum*) is a flowering herb with unknown native origins, and it is poisonous. Its berries should not be consumed, as berry consumption has resulted in death in children.

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4. Red baneberry

Red baneberry, or Actaea rubra, is a small clumping plant that grows pretty white flowers in the spring followed by bright red berries summer. Although the plant is pretty in shade gardens, it is poisonous and should never be ingested.

5. Jimsonweed

Jimsonweed (Datura stramonium) is a species of nightshade plant native to Central America which is considered an invasive species in more temperate climates. It can be toxic if ingested in significant quantities. It has a distinctive, strong smell. The jimsonweed gets its common name from Jamestown, Virginia, where soldiers ingested the plants exhibited altered mental states afterward.

6. 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.

7. 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.

8. Mexican prickly poppy

Argemone mexicana has been naturalized in many parts of the world. It is extremely tolerant of drought and poor soil, but is poisonous to grazing animals. Its seed pods secrete a pale yellow latex when cut open. In India, the mexican prickly poppy is used in the Holika Dahan festival, in which adults and children worship by offering flowers.

Growth Rate:

Moderate

9. Cheeseweed mallow

Cheeseweed mallow (Malva parviflora) is a plant species native to Europe, Asia, and Northern Africa. Cheeseweed mallow has a variety of other common names including Egyptian mallow, marshmallow, small-flowered mallow, and mallow. This species is naturalized in many places.

10. Puncture Vine

Puncture Vine_ (Tribulus terrestris)_ is a poisonous plant. The fruit consists of burs with sharp spines, which can puncture the skin of human beings and animals. They can also rupture a bicycle tire (hence the name) and penetrate shoe soles. The leaves contain compounds known as saponins, which are toxic to livestock.

11. 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

12. 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

13. Black medick

The black medick plant matures anywhere from 15 to 79 cm in height, with stems that lie flat at the beginning of growth and later stand up to be erect. The black medick is a plant known for making excellent honey. It is sometimes planted specifically for this purpose. It is also a good pasture plant for livestock feed; however, it is not overly palatable to cattle.

Growth Rate:

Moderate

14. Ribwort plantain

Ribwort plantain grows in a number of different habitats as long as it has enough sunlight. Its leaves have characteristic parallel veins that make it easy to identify. The heads of ribwort plantains get popped off in some common British children's games. Its seeds are critical food sources for songbirds, and its leaves are eaten by rabbits and deer.

15. 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

16. Black nightshade

Black nightshade (Solanum nigrum) is a highly toxic plant and caution should be exercised around this plant. It's said that black nightshade fruits can technically be consumed if they are fully ripe and properly cooked and prepared. Generally though, due to the danger they present, no one would ever want to try to eat this plant.

17. Bird vetch

Bird vetch (Vicia cracca) is a flowering species of vetch native to Europe and Asia. In North America, bird vetch is considered an invasive species and a weed. In these environments, the flowering plant often grows in industrial disturbed environments like oil fields.

18. Common vetch

Common vetch (Vicia sativa) is an annual herb plant also commonly called vetch, tare, and garden vetch. It is often considered a weed, but is also utilized for manure and animal feed for livestock across the world. When grown for agricultural purposes, it is sown in dense fields.

Growth Rate:

Rapid

19. Santa Maria feverfew

Parthenium hysterophorus or santa Maria feverfew is also called famine weed. It is an invasive weed that can disrupt the health of crops, pasture, livestock, and humans. A substance in the plant, called parthenin, is highly toxic and can cause dermatitis and breathing difficulties in humans and animals.

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Eritrea's diverse environment, characterized by semi-arid deserts, highlands, and coastal regions, creates microclimates conducive to the propagation of toxic plants. Factors like temperature, rainfall, and soil types contribute to the presence of such flora. Among these, , , and are examples that benefit from these conditions. The prevalence of toxic plants poses concerns for human and animal health, highlighting the need for proper identification and management in the ecosystem.

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Eritrea's arid climate and diverse soils create an ideal environment for native flowers to thrive. Among these blossoms, three stand out: , , and . These flowers not only add to the region's visual beauty but also hold cultural significance and play a vital ecological role. Sourcing reliable information, this concise summary highlights the remarkable characteristics of Eritrea's local flowers.

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Most Common Plants

In Eritrea, you can find Animated oat, Abyssinian oat, Grain sorghum, Guava, Desert date, and more! There are 50 types of plants in total. Be sure to look out for these common plants when you’re walking on the streets, in parks, or public gardens.