Weekly Report

19 May 2023

Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores


Pollen and fungal spore (mould) concentrations were flat in all cities except Potchefstroom, where mould spores were moderate, in response to rain and low temperatures.

Cape Town

Pollen in all the categories was low during this sampling period. Trees included Nuxia (forest elder), cypress (Cupressaceae), gum (Myrtaceae), birch (Betulaceae), waxberry (Morella spp.) and the sumac family (Anacardiaceae). Weeds were erica (Ericaceae), mugwort (Artemisia spp), sorrel (Rumex spp), sedge (Cyperaceae) and goosefoot (Chenopodiaceae). Moulds were low.


Low concentrations of pollen were detected at this sampling site. Tree taxa were gum (Myrtaceae) and the sumac family (Anacardiaceae). Weeds were lily (Liliaceae), goosefoot (Chenopodiaceae) and mugwort (Artemisia spp.). Mould spores were extremely low.


All pollen categories had low concentrations during this sampling week. Tree taxa included Australian pine (Casuarina spp.), bushwillow (Combretaceae), gum (Myrtaceae) and linden (Tiliaceae). Weeds were the daisy family (Asteraceae), the carnation family (Combretaceae), spurges (Euphorbiaceae) and slangbos (Stoebe-type). Mould spores were low.


Grasses were low. Low tree concentrations included beech (Fagus spp.), gum (Myrtaceae) and elm (Ulmaceae). Weeds were slangbos (Stoebe-type). Mould spores were low.


Low pollen concentrations were seen at this sampling site. Trees were the sumac family (Anacardiaceae), false olive (Buddleja spp.), poplar (Populaceae) and olive (Oleaceae). Weeds were the daisy family (Asteraceae) and sedge (Cyperaceae). Moulds were low.


The spore trap has been repaired and is running once again. Findings will be available from next week.


Pollen concentrations were extremely low. Tree pollen included the following types: Gum (Myrtaceae), elm (Ulmaceae), cypress (Cupressaceae) and forest elder (Nuxia spp.). Weeds were mallows (Malvaceae). Moulds were moderate but with spikes for the allergenic spores Cladosporium and Epicoccum.


The tree, weed and grass pollen concentrations were all low at this sampling site. Tree pollen types were gum (Myrtaceae), waxberry (Morella spp.) and karee (Rhus/Searsia spp.). Weeds were goosefoot (Chenopodiaceae), sedge (Cyperaceae), erica (Ericaceae), slangbos (Stoebe-type) and mezereum (Thymelaeaceae). Mould spores were consistently low.


Grass, trees and weed pollen was low. Tree pollen detected was Australian pine (Casuarina spp.) and gum (Myrtaceae). Weeds were pigweed (Amaranthaceae) and plantain. Mould spores were moderate.