Weekly Report

9 April 2021

City
Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores

Cape Town

Grass pollen counts were low. Tree pollen levels were moderate, with gum (Myrtaceae), pepper tree (Schinus sp.), cypress (Cupressaceae), olive (Oleaceae) and waxberry (Morella) present. Weed counts were low and included the daisy family (Asteraceae), buttercups (Ranunculaceae), goosefoot (Chenopodiaceae), English plantain (Plantaginaceae), sedges (Cyperaceae) and erica (Ericaceae). Fungal spore loads were low.

Johannesburg

Grass levels were moderate. Tree and weed pollen counts were low. Tree pollen included cypress (Cupressaceae), mulberry (Moraceae), gum (Myrtaceae), olive (Oleaceae), pine (Pinus sp.), poplar (Populus sp.), plane (Platanus sp.), karee (Rhus sp.) and oak (Quercus sp.). Weed pollen types present were the carnation family (Caryophyllaceae), the daisy family (Asteraceae), ericas (Ericaceae), spurges (Euphorbiaceae sp.), goosefoot (Chenopodiaceae), slangbos (Stoebe type), the mezereum family (Thymelaeaceae) and fern spores (Polypodiaceae). Fungal spore counts were low.

Pretoria

Grass levels were moderate. Tree and weed pollen counts were low. Tree pollen included bottlebrush (Callistemon sp.), sand olive (Dodonaea sp.) and pine (Pinus sp.). Weed pollen types detected were the daisy family (Asteraceae), spurges (Euphorbiaceae sp.), goosefoot (Chenopodiaceae) and peaks of slangbos (Stoebe type). Mould levels were low.

Bloemfontein

Grasses were moderate. Trees were low and included waxberry/bayberry (Morella sp.), pine (Pinaceae), Australian pine or beefwood (Casuarina) and eucalyptus (Myrtaceae). Low weed levels were detected, and the pollen types were mugwort (Artemisia), the daisy family (Asteraceae), English plantain (Plantaginaceae) and nettle (Urticaceae). Moulds were low but some significant spikes for Alternaria were noted.

Kimberley

Grass levels were high. Trees were low and only Australian pine/beefwood (Casuarina) and waxberry/bayberry (Morella sp.) were detected. Low weed levels included the daisy family (Asteraceae), goosefoot (Chenopodiaceae) and protea (Proteaceae). Mould levels were low overall but significant Alternaria levels (including a strong spike on 29/03) were detected.

Durban

Grass, tree and weed pollen levels were low. Tree types detected were eucalyptus (Myrtaceae), pepper tree (Schinus sp.) and mulberry (Moraceae). Weeds detected were sorrel (Polygonaceae), the daisy family (Asteraceae), goosefoot (Chenopodiaceae), sedges (Cyperaceae), ferns (Polypodiaceae) and waxberry (Myricaceae). Mould counts were moderate.

Gqeberha

Grasses remained low at this site. Tree pollen levels were low and eucalyptus (Myrtaceae), Australian pine or beefwood (Casuarina), waxberry/bayberry (Morella) and species from the Anacardiaceae family (Rhus sp., Schinus sp.) were detected. Weeds were low and included lilies (Liliaceae), sedges (Cyperaceae), the carnation family (Caryophyllaceae) and Stoebe-type (includes renosterbos and slangbos). Moulds were low.

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