Weekly Report

23 April 2021

City
Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores

Cape Town

Grasses were low, as were trees and weeds. Trees detected were waxberry (Morella sp.), pine (Pinaceae), elm (Ulmaceae), birch (Betulaceae), eucalyptus (Myrtaceae) and forest elder (Nuxia sp.). Weeds detected were ferns (Polypodiaceae), the daisy family (Asteraceae) and slangbos (Stoebe-type). Moulds were low.

Johannesburg

Grasses were high. Trees were low. Cypress (Cupressaceae), bush willow (Combretaceae), mulberry (Moraceae), eucalyptus (Myrtaceae), pine (Pinaceae) poplar (Populaceae) and oak (Quercus sp.) were detected. Weeds were moderate as the carnation family (Caryophyllaceae), goosefoot (Chenopodiaceae), the daisy family (Asteraceae), mallows (Malvaceae), slangbos (Stoebe-type), ferns (Polypodiaceae), spurges (Euphorbia sp.) and heather (Ericaceae) were detected. Moulds were low with one spike for Alternaria, an allergenic mould.

Pretoria

Grasses were moderate and trees and weed levels were low. Trees detected included bush willow (Combretaceae), the soapberry family (Dodonaea sp.), mulberry (Moraceae), eucalyptus (Myrtaceae) and jacaranda (Bignoniaceae). Weeds included ragweed (Ambrosia sp.) the daisy family (Asteraceae), goosefoot (Chenopodiaceae), the spurge family (Euphorbiaceae), slangbos (Stoebe-type) and nettle (Urticaceae). Moulds were low.

Bloemfontein

Grass counts were high. Tree pollen levels were low and only gum tree (Myrtaceae) was detected. Weed pollen counts were low and included the daisy family (Asteraceae) and goosefoot (Chenopodiaceae). Fungal spore counts were low.

Kimberley

Grasses were high. Tree levels were low and only pepper tree (Schinus sp.) was detected. Low weed levels included the daisy family (Asteraceae), sedges (Cyperaceae) and mugwort (Artemisia sp.). Moulds were low except for two large spikes for the allergenic mould, Alternaria.

 Durban

Grasses, trees and weeds were low at this site. Trees detected were waxberry (Morella sp.), cypress (Cupressaceae), mulberry (Morus spp.) and pepper tree (Schinus spp.). Weeds seen were the daisy family (Asteraceae), ragweed (Ambrosia sp.), slangbos (Stoebe-type), ferns (Polypodiaceae), English plantain (Plantaginaceae) and goosefoot (Chenopodiaceae). Moulds were moderate with spikes for Cladosporium.

Port Elizabeth

Grasses, trees and weed counts were low. Tree pollen identified included olive (Oleaceae), Australian pine (Casuarina sp.) and the cashew or sumac family (Anacardiaceae). Weed pollen detected were erica (Ericaceae), the carnation family (Caryophyllaceae), waxberry (Morella sp.) and slangbos (Stoebe-type). Fungal spore counts were low.

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