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Some weed control is preventative, implementing protocols to stop weeds from invading new areas. Cultural weed control involves shaping the managed environment to make it less favorable for weeds. [56] [57] Once weeds are present in an area, a wide variety of means to destroy the weeds and their seeds can be employed. Since weeds are highly ...
Ouret lanata is a common weed which grows wild everywhere in the plains of India. The root has a camphor -like aroma. The dried flowers which look like soft spikes, are sold under the commercial names Buikallan and Boor.
Galinsoga parviflora [4] is a species of herbaceous plant in the daisy family Asteraceae.It has several common names including guasca (Colombia), pacpa yuyo, paco yuyo, and waskha (Peru), burrionera (Ecuador), albahaca silvestre and saetilla (Argentina), mielcilla (Costa Rica), piojito (Oaxaca, Mexico), galinsoga (New Zealand), gallant soldier, [5] [6] quickweed, [6] and potato weed (United ...
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent.
The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. [5] [6] The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning ...
It is believed to have originated in Central America, but today has a pantropical distribution and is considered a weed in some areas. [4] In northern Australia, Sida acuta is considered an invasive species, and the beetle Calligrapha pantherina has been introduced as a biological control agent in an attempt to control the plant. [5]
Sigesbeckia orientalis, commonly known as Indian weed [2] or common St. Paul's wort, [3] 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.
Alternanthera philoxeroides, commonly referred to as alligator weed, is a native species to the temperate regions of South America, which includes Argentina, Brazil, Paraguay and Uruguay. [2] Argentina alone hosts around 27 species that fall within the range of the genus Alternanthera . [ 2 ]