Weekly Report

4 December 2020

City
Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores

Cape Town

Grasses were low. Low trees included kareeboom (Rhus) gum (Myrtus) and olive (Olea). Low weeds included the types slangbos (Stoebe) Pellitory-of-the-wall (Parietaria) and mugwort (Artemisia). Moulds were low.

Johannesburg

Low levels of grass were detected. Tree levels were low and the types detected were jacaranda (Fabaceae), Acacia and gum (Myrtus). Low weed levels included the types English Plantain (Plantago) Euphorbia and Pellitory-of-the-wall (Parietaria). Moulds were very low.

Pretoria

Grasses are low but increasing. Low tree levels were seen and the types detected were kareeboom (Rhus/Searsia), yellowwood (Podocarpus spp), gum (Myrtus) and white stinkwood (Celtis). Weed levels were low and included English Plantain (Plantago), Pellitory-of-the-wall (Parietaria) and ferns (Polypodiaceae). Moulds were low.

Bloemfontein

Bloemfontein: Low levels were seen for grasses. Low tree levels included the types olive (Olea) pine (Pinus) yellowwood (Podocarpus and plane (Platanus) Weed levels were low as only the daisy family (Asteraceae)and ferns (Polygonaceae) were detected. Moulds were generally low with occasional significant spikes for the allergenic fungal spore Alternaria.

Kimberley

Grass levels are low but increasing. Low tree levels included olive (Olea spp) and kareeboom (Rhus/Searsia). Weeds detected were slangbos (Stobe spp), the daisy family (Asteraceae) aloe (Asphodelaceae) and goosefoot (Chenopod) and these levels were low. Low mould levels were seen with small spikes for Basidiospores (includes mushroom spores) following rain.

Durban

Grass levels were low. Low tree levels included olive (Olea), yellowwood (Podocarpus spp), jacaranda (Fabaceae) and white mulberry (Morus). Weed levels were low and the types detected were sedges (Cyperus) the daisy family (Asteraceae), ragweed (Ambrosia spp), and ferns (Polypodia). Moulds were low but Epicoccum increased to significant levels after rain.

Gqeberha

Grasses levels were low. Low tree levels included the types olive (Olea), gum (Myrtus), waxberry (Morella) and the Anacardiaceae family (Mango, Pepper, Pistachio, Cashew). Weed levels were low and the pink or carnation family (Caryophyllaceae), heather (Erica), the Amaranthaceae family which includes saltbush sedges (Cyperus) and the daisy family (Asteraceae) were detected. Moulds were low.