Prolonging the period of allergenic burden: late-flowering grasses and local peculiarities

Summary Background The grass pollen season is characterized by a particularly long duration, covering the months May to July in Europe but can vary depending on altitude and geographical location. Methods Three species whose flowering period takes place late are discussed detail: Phragmites australis (common reed), Miscanthus spp. (silvergrass), Zea mays (maize). Results flowers between August September provides significant concentrations at sites with large reed populations. from October found as an ornamental plant urban areas crop rural areas. cause discomfort especially vicinity of cornfields. Discussion Phenological observations important part aerobiological routine work gain insights into regional peculiarities like late-flowering grasses, which play role prolonging duration season.