About Poa annua Poa annua, or annual meadow grass (known in America more commonly as annual bluegrass or simply poa), is a widespread low-growing turfgrass in temperate climates. Though P. annua is commonly considered a solely annual plant due to its name, perennial bio-types do exist. ‘Poa’ is Greek for fodder. It is one of […]
About Mugwort, Artemisia vulgaris Artemisia vulgaris (mugwort or common wormwood) is one of several species in the genus Artemisia commonly known as mugwort, although Artemisia vulgaris is the species most often called mugwort. This species is also occasionally known as riverside wormwood, felon herb, chrysanthemum weed, wild wormwood, old Uncle Henry, sailor’s tobacco, naughty man, […]
About Ambrosia Ragweeds are flowering plants in the genus Ambrosia in the aster family, Asteraceae. They are distributed in the tropical and subtropical regions of the New World, especially North America, where the origin and center of diversity of the genus are in the southwestern United States and northwestern Mexico. Several species have been introduced […]
Forecast Pollenconcentration: very low low moderate high extreme 24 hour forecast >> Single maps Belgium >> Maps developed by hooikoortsradar.nl , buienradar.nl & Elkerliek Hospital
This calendar shows when specific trees are flowering (in the Netherlands). The calendar is video-based. Every tree is explained by a short video. Corylus aveilana Alnus incana Alnus glutinosa Salix viminalis Taxus Bacatta Populus x more Carpinus Betulus Betula pendula more information >> Fagus sylvatica Quercus robur […]
This calendar shows when specific types of herbs are flowering (in the Netherlands), each herb is explained by a short video. Parietaria judaice and Ambrosia artemisiifolia are the most allergenic. Most allergenic herbs: Rumex acetosa Plantago lanceolata Parietaria judaica more information >> Urtica dioica Artemisia vulgaris more information about Artemisia vulgaris >> […]
This example calendar shows when specific grasses are flowering (in the Netherlands). The calendar is video-based. Every grasstype is explained by a short video. Alopecurus pratensis Image: Alopecurus pratensis, Meadow foxtail. Five stages in ripening of the inflorescense and opening of the anthers to free pollen. more information >> Dactylis glomerata Poa pratensis Anthoxanthum odoratum […]
Are winddirection, pollenconcentration and pollenpressure correlated? It very much depends on your location. This graph shows that for the Netherlands a south-east wind is less favourable, as it can bring pollen from Germany and Belgium. When you live on a small island like Helgaland, every winddirection is favourable. Besides winddirection also windspeed is correlated.