Pollen - City

Species - Birch

Birch

ALLERGENICITY
Moderate
POLLEN SEASON
Winter - Spring
TYPE
Tree

The birch tree is a species of deciduous tree in the genus Betula, native to Europe and Northern Asia. It is closely related to the alder (Alnus) and hazelnut (Corylus). The bark of birch trees contains tannins, which are astringent in nature and give birch its distinctive smell. The leaves are alternate and spirally arranged on the twigs; they are typically triangular-shaped with serrated edges. Birch flowers are small, white or pale yellowish-green at first with male flowers having six stamens while female flowers have none or just two stamens—which makes them sterile so no pollen can be produced from them; instead female flowers produce fruit called samaras which contain one seed each inside them; when ripe these samaras fall off bark trees where they germinate into saplings (usually 7-10 years old). In some species such as Acer campestre only males have empty arches aka "vessels" through which insects may deposit pollen onto female flowers' surfaces but these same species do not usually flower every year since their flowering period only lasts about 4 months long due to cold weather conditions preventing bud formation due to low temperatures during this time period leading up until mid March when temperatures rise above freezing again allowing buds formed earlier than usual begin opening resulting in flowering season starting again starting around 1st week May though depending on weather conditions sometimes earliest opening day may occur 1st week April itself too if all goes well without any bad storms happening too early spring when days start getting longer again until summer ends sometime around mid September thus ending most productive growing season altogether once there's no more cold weather coming anymore during this whole month long process every year except maybe once every three years here maybe two then maybe once every five years still depending on what kind of climate zone area you live in.

Birch trees are part of the Betulaceae family

Birch trees are part of the Betulaceae family, which includes birch and hazel. They're native to the Northern Hemisphere, but can also be found in some southern regions as well. The leaves on birch trees turn red or yellow in the fall before falling off completely; this process is called "deciduous."

Birch wood has traditionally been used for making furniture because it's soft and easy to work with. It's also very strong compared to other woods like oak or ash (which are harder). In fact, many people use birch as their primary source of heat during wintertime because it burns hotter than other types of wood—but this isn't recommended if you're trying to keep your home warm enough for sleeping comfort!

Some experts claim that birch trees produce more than 50 million pollen grains per hour.

Some experts claim that birch trees produce more than 50 million pollen grains per hour. This is more than any other tree, and this is why they are the first trees to bloom in spring.

Birches grow well in wet areas, but they also flourish in dry regions where there are few other plants growing nearby. They can grow up to 20 meters tall (65 feet), but most are around 10 meters tall (33 feet). Birch trees have soft leaves with a sharp edge that makes them good for climbing and hanging on branches while they grow new twigs every year as part of their life cycle

Because they are one of the first trees to bloom in springtime, they may also be responsible for causing allergies when you believe that you are not allergic to any tree pollen.

If you believe that you are not allergic to any tree pollen, birch trees may be one of the first trees to bloom in spring. Birch trees are wind pollinated and therefore their pollen is carried by air currents rather than on insects or animals. Because they are one of the first trees to bloom in springtime, they may also be responsible for causing allergies when you believe that you are not allergic to any tree pollen.

Birches produce a lot of sap which can cause skin rashes if it gets into your eyes or mouth (or worse). Birch sap has been known as a substitute for blood since ancient times; however it should only be eaten once dried out completely before consumption if at all possible!

The pollination period of birch trees typically lasts from mid-March until mid-June

If you are allergic to birch tree pollen, you may experience a variety of symptoms. The severity of your allergic reaction will depend on the concentration and type of pollen that is present in any given season.

When birch tree pollen allergies occur during this time period, there may be itching or swelling at the site where you have been exposed to it. This can be accompanied by shortness of breath and wheezing; however, these symptoms are often mild compared to those experienced by people who are severely allergic to birch trees (i.e., anaphylactic shock).

Read more about Birch at Wikipedia:
https://en.wikipedia.org/wiki/birch
Birch
Image from Wikipedia