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Ragweed pollen can remain airborne for days and travel great distances, and can even be carried 300–400 miles (500–600 km) out to sea. [12] Ragweeds native to the Americas have been introduced to Europe starting in the nineteenth century and especially during World War I , and have spread rapidly since the 1950s. [ 15 ]
As of 2014 the ragweed leaf beetle, Ophraella communa, has been found south of the Alps in southern Switzerland and northern Italy. Many of the attacked plants were completely defoliated. [20] Calligrapha suturalis was introduced to Russia, and then China, for ragweed control, with very positive initial results.
Ambrosia ambrosioides, also known as canyon ragweed or chicura, is a ragweed found in the deserts of northern Mexico (Baja California, Baja California Sur, Chihuahua, Durango, Sonora), Arizona, and California (Ventura + San Diego Counties).
Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed and perennial ragweed, [4] and western ragweed. Distribution and habitat
Ambrosia trifida, the giant ragweed, is a species of flowering plant in the family Asteraceae. It is native to North America , where it is widespread in Canada , the United States , and northern Mexico .
Ambrosia acanthicarpa is a North American species of bristly annual plants in the family Asteraceae.Members of the genus Ambrosia are called ragweeds.The species has common names including flatspine bur ragweed, [3] Hooker's bur-ragweed, [4] annual burrweed, annual bur-sage, and western sand-bur.
A 2022 study found that the heat index in Kansas City will reach 125°F at least one day per year in the next 30 years. Heat index is the “feels like” temperature you can find on your weather app.
Ambrosia eriocentra is a North American species of ragweed known by the common names woolly bursage and woollyfruit burr ragweed. [4] Distribution