Convolvulus arvensis

Convolvulus arvensis (field bindweed) is a species of bindweed in the morning glory family (Convolvulaceae), native to Europe and Asia. It is a climbing or creeping herbaceous perennial plant growing to 0.5–2 m high. The leaves are spirally arranged, linear to arrowhead-shaped, 2–5 cm long and alternate, with a 1–3 cm petiole. The flowers are trumpet-shaped, 1-2.5 cm diameter, white or pale pink, with five slightly darker pink radial stripes. Flowering occurs in the mid-summer, when white to pale pink, funnel-shaped flowers develop. Flowers are approximately 0.75-1 in. (1.9-2.5 cm) across and are subtended by small bracts. Fruit are light brown, rounded and 1/8 in. (0.3 cm) wide. Each fruit contains 2 seeds that are eaten by birds and can remain viable in the soil for decades.[+]

There are two varieties:

Although it produces attractive flowers, it is often unwelcome in gardens as a nuisance weed due to its rapid growth and choking of cultivated plants. It was most likely introduced into North America as a contaminant in crop seed as early as 1739, as an invasive species. Plants typically inhabit roadsides, grasslands and also along streams. Its dense mats invade agricultural fields and reduce crop yields; it is estimated that crop losses due to this plant in the United States exceeded US$377 million in the year 1998 alone.

Other common names, mostly obsolete, include lesser bindweed, European bindweed, withy wind (in basket willow crops), perennial morning glory, smallflowered morning glory, creeping jenny, and possession vine. It is called leli in Punjabi.

In one of the tales collected by Jacob and Wilhelm Grimm, Our Lady's Little Glass, this flower is used by Our Lady to drink wine with when she helps free a wagoner's cart. The story goes on to say that "the little flower is still always called Our Lady's Little Glass."

Ecological Impacts: Field bindweed intertwines and topples native species. It competes with other species for sunlight, moisture and nutrients. It poses threats to restoration efforts and riparian corridors by choking out grasses and forbs. It can decrease habitat biodiversity. It is one of the most serious weeds of agricultural fields in temperate regions of the world.

Toxicity: Mildly toxic to grazing animals

Control and Management: Field bindweed is difficult to eradicate because the seeds remain viable in soil for up to 20 years. One plant can produce up to 500 seeds. The deep, extensive root system stores carbohydrates and proteins and allows it to sprout repeatedly from fragments and rhizomes following removal of aboveground growth.

before seeds set

paper, straw, wood chips, or black plastic can be effective in certain areas

References:

AI-generated Description

Convolvulus arvensis, also known as field bindweed, is a perennial vine with trumpet-shaped flowers and arrowhead-shaped leaves. In Qatar, it has been found to be a common invasive weed, often growing in disturbed areas, roadsides, and agricultural fields. It thrives in the country's hot and dry climate, and can outcompete native vegetation for water and nutrients. Studies have reported its presence in various regions of Qatar, including Doha, Al Rayyan, and the northern parts of the country. Efforts to control its spread are necessary to protect Qatar's native flora and ecosystems.

AI-generated summary of observations

Convolvulus arvensis was observed growing in various locations in Qatar, including roadsides, near mosques, and on Green Circles (center-pivot irrigation) in Irkhaya Farms. The plant was seen blooming with pink and white flowers from February to May, with peak observations in October and November. Insects, such as caterpillars and moths, were found eating the flowers. The plant was also observed growing on fields with center-pivot irrigation, suggesting its ability to thrive in irrigated areas. Multiple observations were made at Irkhaya Farms, indicating that the plant is common in this region. The observations spanned over a year, from 2014 to 2015, providing insight into the plant's growth and blooming patterns in Qatar's environment. Overall, Convolvulus arvensis appears to be a widespread and adaptable species in Qatar.

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Acknowledgements

QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.

Common names

Extract from Wikipedia article