Summary
Grasses were high in Kimberley and low at all the other sites. Mugwort, the allergenic weed, that flowers in late summer/autumn was seen in Bloemfontein, Durban and Johannesburg and autumn peaks were seen at many sites for the allergenic mould Alternaria.
Cape Town
All the pollen concentrations were low during this sampling week. Trees included sumac (Anacardiaceae), gum (Myrtaceae), pine (Pinaceae) and elm (Ulmceae). Weeds were the daisy family (Asteraceae), goosefoot (Chenopodiaceae), sedges (Cyperaceae), hemp (Cannabis) bulrush (Typhaceae) and protea (Proteaceae). Moulds were generally low, but peaks were seen for the allergenic mould Alternaria.
Johannesburg
Pollen was found in low concentrations in all three categories at this site. Tree pollen included Australian pine (Casuarina), gum (Myrtaceae) and pine (Pinaceae). Weeds were mugwort (Artemisia) and slangbos (Stoebe-type). Moulds were mostly low, but with strong peaks for the allergenic mould, Alternaria.
Pretoria
5-year means are shown. At this time of the year all pollen concentrations are low. Tree pollen would include elm (Ulmceae), gum (Myrtaceae), Australian pine (Casuarina), cypress (Cupressaceae), waxberry (Morella), pine (Pinaceae), oak (Quercus) and yellowwood (Podocarpaceae). Weeds might include goosefoot (Chenopodiaceae), sunflower (Helianthus), slangbos (Stoebe-type), the daisy family (Asteraceae) and sedges (Cyperaceae) and moulds would be low.
Bloemfontein
Tree, grass and weed pollen was consistently low at this site. Trees included false olive (Buddleia), hackberry (Celtis), olive (Oleaceae), yellowwood (Podocarpaceae), poplar (Populaceae), oak (Quercus) and karee (Searsia). Weeds were mugwort (Artemisia), goosefoot (Chenopodiaceae), sedges (Cyperaceae) and plantain (Plantaginaceae). Moulds were low, but peaks were seen for the allergenic mould Alternaria.