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The three pollen seasons: Trees, grass and weeds A birch tree in the spring forms pollen seen here. Pollen can be broken down in to three categories depending on where it comes from - tree, grass ...
Those included high levels of pollen from ash, mulberry, oak, pine and sweet gum trees, according to DEQ. The previous high was 10,995 pollen grains recorded on April 6, 2010.
Between now and May, pollen from birch, maple and oak trees, for example, are wreaking havoc on allergies, causing red and itchy eyes, runny noses and sneezing fits.
Fraxinus americana, the white ash or American ash, is a fast-growing species of ash tree native to eastern and central North America. White ash trees are threatened by the invasive emerald ash borer .
Image of black ash trunk. Tree is located in a seasonally wet, riparian habitat near a small-scale stream. Tree bark is corky and spongy. Black ash is a medium-sized deciduous tree reaching 15–20 metres (49–66 ft) (exceptionally 26 metres (85 ft)) tall with a trunk up to 60 cm (24 inches) diameter, or exceptionally to 160 cm (63 inches).
Fraxinus uhdei is locally known as fresno blanco in Spanish; other English vernacular names include Hawaiian ash and Mexican ash. [3] The name Shamel ash refers to Archie Shamel, who introduced the trees to California in the 1920s. [7] It is known as urapan in Colombia, where it was introduced in the 1950s. [8]
According to the Medical University of South Carolina, tree pollen is the main cause of trouble for most allergy sufferers each spring. The specific culprits are oak, pine, willow and birch trees.
Fraxinus pennsylvanica, the green ash or red ash, [3] is a species of ash native to eastern and central North America, from Nova Scotia west to southeastern Alberta and eastern Colorado, south to northern Florida, and southwest to Oklahoma and eastern Texas.