Over 2 million people in our country observe some changes on themselves during pollen season. One in two Europeans suffers due to flying pollen. The number of people affected is increasing every year and increasingly children are also affected.

Who is to blame for all this?

Pollen and mould are undoubtedly the most important.

• Pollen, which is used for plant reproduction, is made up of individual pollen grains. Pollen from insect-pollinated plants with colourful flowers (e.g. roses) does not usually cause allergies. This is because their pollen grains are large and heavy and are adapted for transmission by bees and other insects.
• In contrast, pollen from windblown plants (trees, grasses and weeds), which have pollen grains that are light and adapted for airborne transmission, can cause reactions.

The maximum pollen is therefore airborne in dry and windy weather. In contrast, the number of pollen grains decreases after prolonged rain. The pollen season has been steadily lengthening in our country in recent decades. It usually lasts from February/March to September/October.

In the Czech Republic, the pollen season can be divided into 3 main periods:

Spring season (February to May): the tree season.

summer season (May to July): grass season

autumn season (August to October): weed season

The main representatives here are hazel, alder and birch. The most common grasses are boletus, ryegrass, lime, tomclover, hornwort and fescue. We also include cereals: wheat, barley, rye and oats.