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Solidago canadensis, known as Canada goldenrod or Canadian goldenrod, is an herbaceous perennial plant of the family Asteraceae. [2] It is native to northeastern and north-central North America [ 3 ] and often forms colonies of upright growing plants, with many small yellow flowers in a branching inflorescence held above the foliage.
Goldenrod has heavier pollen that must be carried by a pollinator from plant to plant whereas ragweed has lighter weight pollen that is blown by the wind, causing those pesky fall allergies.
Solidago altissima, tall goldenrod, was named the state wildflower of South Carolina in 2003. [49] The sweet goldenrod (Solidago odora) is the state herb of Delaware. [50] Goldenrod was the state flower of Alabama, but it was later rejected in favor of the camellia. [51]
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 ]
Goldenrod is a common name for many species of flowering plants in the sunflower family, Asteraceae, commonly in reference to the genus Solidago. Several genera, such as Euthamia , were formerly included in a broader concept of the genus Solidago .
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Solidago juncea, the early goldenrod, [3] plume golden-rod, or yellow top, is a North American species of herbaceous perennial plants of the family Asteraceae native to eastern and central Canada and eastern and central United States.