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Euphorbia hirta (sometimes called asthma-plant [3]) is a pantropical weed, originating from the tropical regions of the Americas. [4] It is a hairy herb that grows in open grasslands, roadsides and pathways. It is widely used in traditional herbal medicine across many cultures, particularly for asthma, skin ailments, and hypertension. [5]
It is native to the eastern Mediterranean and Middle East, and is widely established worldwide as an urban weed. Its pollen is a significant cause of asthma and other allergies in warmer countries, but it is also valued as a contributor to biodiversity in polluted cities and it has been used as a medicinal herb.
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Datura stramonium, known by the common names thornapple, jimsonweed (jimson weed), or devil's trumpet, [2] is a poisonous flowering plant in the Daturae tribe of the nightshade family Solanaceae. [3] Its likely origin was in Central America , [ 2 ] [ 4 ] and it has been introduced in many world regions.
The fresh leaves are consumed in bush tea as a “cooling” tonic and blood cleanser, to treat “asthma” and “ulcerated stomachs”. [10]Tea brewed from this species has been shown to cause a dose-dependent "fall in [the] blood pressure" of normal rabbits.
Manually uprooting ragweed is generally ineffective, and skin contact can cause allergic reaction. If uprooting is the method of choice, it should be performed before flowering. There is evidence that mechanical and chemical control methods are actually no more effective in the long run than leaving the weed in place. [21]
The Asthma and Allergy Foundation of America listed Wichita as the top metro area for seasonal allergens, which are on the rise due to climate change. Kansas is the worst place in the country for ...
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 ...