Weekly Report

22 June 2020

City
Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores
Cape Town
Johannesburg
Bloemfontein
Durban
Pretoria
Port Elizabeth
Kimberley

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Cape Town

Heavy rain and low temperatures reduced the fungal and pollen levels. Snow lay thickly on some Cape mountains. The few tree pollen types detected were cypress, gum and waxberry. No weed or grass pollen was detected. Moulds were low with small spikes for ascospores when sunshine followed rain.

Johannesburg

Grass levels were low to moderate. Trees were low as birch, cypress, gum, plane and kareeboom (Searsia formerly Rhus) were detected. Low levels of weeds included the daisy family, goosefoot, ferns, Euphorbia and Stoebe (slangbos) an indigenous shrub. Moulds were low.

Pretoria

Grass levels were low, tree levels were also low and only the type cypress was detected. Low weed levels included rumex (sorrel) and fern spores. Moulds were low with frequent small spikes for Cladosporium.

Bloemfontein

Grass levels ranged from low to moderate, tree pollen levels were low and included Buddleja and kareeboom (Searsia previously Rhus). Weeds were similarly low and the types detected were sorrel and the daisy family. Mould levels were very low.

Kimberley

Grass levels were low, trees levels were low and tree types included cypress, gum and Searsia, formerly Rhus. No weed pollen was detected in the atmosphere and mould levels were low throughout the week.

Durban

Grass levels were very low as were tree levels. Only Searsia, formerly Rhus and gum  tree pollen was detected. Weeds were very low and included the daisy family. Moulds were low for all but one day, when a very large spike was detected for ascospores. The ascospore level was almost 14 000/cubic meter on 11 June.

Port Elizabeth

Grass levels were low. Trees were similarly low and the types gum and waxberry were detected. Weeds were low and included Stoebe, or slangbos an indigenous shrub and Caryophyllaceae, the pink or carnation family. Moulds were consistently low.

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