Summary
Grass counts were moderate in Kimberley, but tree and weed counts were low at every sampling site.
Cape Town
Tree, grass and weed pollen concentrations were low. Trees included birch (Betula), bushwillow (Combretaceae), hackberry (Celtis)cypress (Cupressaceae), olive (Oleaceae), gum (Myrtaceae) and oak (Quercus). Weeds were the carrot family (Apiaceae), goosefoot (Chenopodiaceae), sedges (Cyperaceae), plantain (Plantaginaceae) and nettles (Urticaceae). Moulds were low.
Johannesburg
All pollen and mould concentrations were low. Trees included bushwillow (Combretaceae), mulberry (Moraceae), gum (Myrtaceae), elm (Ulmaceae) and karee (Searsia). Weeds were pigweed (Amaranthaceae), lily (Liliaceae), sedges (Cyperaceae), the daisy family (Asteraceae), ferns (Polypodiaceae) and plantain (Plantaginaceae).
Pretoria
6-year means are shown. Trees at this site would be low and might include Australian pine (Casuarina), gum (Myrtaceae), olive (Oleaceae), hackberry (Celtis) and ash (Fraxinus). Low weeds might be the daisy family Asteraceae), goosefoot (Chenopodiaceae), nettles (Urticaceae) and slangbos (Stoebe). Moulds are typically low at this time of the year.
Bloemfontein
Tree, grass and weed pollen concentration were low. Trees included acacia (Acia-type), false olive (Buddleia), waxberry (Morella), gum (Myrtaceae), olive (Oleaceae), yellowwood (Podocarpaceae), poplar (Populaceae), karee (Searsia) and oak (Quercus). Weeds were mugwort (Artemisia), the daisy family (Asteraceae), goosefoot (Chenopodiaceae), sorrel (Rumex), plantain (Plantaginaceae) and sedges (Cyperaceae). Moulds were low.
Kimberley
Tree, grass and weed concentrations were all low at this site. Trees included acacia (Acacia-type), birch (Betula), hackberry (Celtis). olive (Oleaceae), poplar (Populaceae, oak (Quercus), ash (Fraxinus) and karee (Searsia). Weeds were mugwort (Artemisia), daisy (Asteraceae), sedges (Cyperaceae), goosefoot (Chenopodiaceae) and plantain (Plantaginaceae). Moulds were low.
Durban
All pollen concentrations were low. Trees included birch (Betula), poplar (Populaceae), elm (Ulmaceae), mulberry (Moraceae), olive (Oleaceae), ash (Fraxinus) and pine (Pinaceae). Pecan (Carya) and acacia (Acacia-type). Weeds were ragweed (Ambrosia), the daisy family (Asteraceae), plantain (Plantaginaceae), goosefoot (Chenopodiaceae), sedges (Cyperaceae) and ferns (Polypodiaceae). Moulds were low.
Gqeberha
Pollen and moulds are usually scarce in the atmosphere at this time of the year. 6-year means include the trees palm (Arecaceae), olive (Oleaceae), Australian pine (CASUARINA), PINE (Pinaceae) and yellowwood (Podocarpaceae). Weeds would be spurges (Euphorbiaceae), the daisy family (Asteraceae), plantain (Plantaginaceae) and goosefoot (Chenopodiaceae and moulds are typically low.
George
Very low grass levels were seen at this site and no tree or weed pollen was detected. Moulds were low.
Reference Range
Grass: Low: 0-5 Moderate: 6-20 High: 21-200
Trees: Low: 0-15 Moderate: 16-90 High: 91-1500
Weeds: Low: 0-10 Moderate: 10-50 High: 51-500
Moulds: Low: 0-900 Moderate: 900-2500 High 2500-25000
Unit: per cubic metre