Year: 2021

29 January 2021

Cape Town Grasses are low. Trees remain low, with eucalyptus (Myrtaceae), acacia (Acacia sp.), waxberry (Myricaceae) and cypress (Cupressaceae) detected. Weed counts were very low, including the daisy family (Asteraceae), English plantain (Plantago), erica (Ericaceae), duckweed (Lemnaceae) and buttercups (Ranunculaceae). Moulds were low with a small but insignificant spike for Alternaria following the rain. Johannesburg …

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21 May 2021

Cape Town Grasses were low. Trees were moderate due to the contribution of forest elder (Nuxia sp.). This tree is insect pollinated and unlikely to be allergenic. A small spike was seen for gum (Myrtaceae), and other trees included karee (Rhus sp. / Searsia sp.), olive (Oleaceae), birch (Betulaceae) and waxberry (Morella sp.). Weeds were …

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10 September 2021

Summary Trees are flowering at most sites now and significant tree counts were seen in Johannesburg, Pretoria and Cape Town. Cypress, plane, mulberry and birch have been detected in significant numbers and a variety of other trees are entering their pollen release cycle. Weed and grass levels are low at all the sites. Remember that …

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5 February 2021

Cape Town Grasses were low but showed a slight increase from previous weeks. Tree pollen levels were also low, with palm tree (Arecaceae), gum tree (Eucalyptus), pepper tree (Schinus sp.) and kareeboom (Rhus/Searsia) detected. Weed pollen of the daisy family (Asteraceae), goosefoot (Chenopodiaceae), erica (Ericaceae), waxberry (Myricaceae), English plantain (Plantago), slangbos (Stoebe), nettle (Urticaceae) and …

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28 May 2021

Cape Town Grass, tree, weed and mould counts were low during this sampling period. Tree pollen included gum tree (Myrtaceae), waxberry (Morella sp.) and forest elder (Nuxia sp.). The only weed pollen detected was from the daisy family (Asteraceae). Johannesburg Grass, tree, weed and mould levels were low. Tree pollen detected during this sampling period …

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17 September 2021

Summary High tree pollen counts across the country. The tree season is still peaking as cypress, mulberry, plane, pine and hackberry are reaching significant concentrations in the atmosphere. Many other trees are flowering, so check your city for more details. Grasses are increasing in Bloemfontein and Kimberley, while weed levels remain low in most cities. …

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12 February 2021

Cape Town Grasses were very low. Low tree levels were detected including the types pine (Pinaceae), waxberry (Morella), cypress (Cupressaceae) and kareeboom (Searsia/Rhus). Low weed levels were detected and these included English Plantain (Plantaginaceae), buttercup (Ranunculaceae), nettle (Urticaceae), slangbos (Stoebe), the daisy family (Asteraceae) and ferns (Polypodiaceae). Moulds were consistently low. Johannesburg Heavy rain washed …

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4 June 2021

Cape Town Grasses, trees, weeds and moulds were low for this sampling period. Forest elder (Nuxia sp.) and gum tree (Myrtaceae) were the only tree pollen detected, and the only weed pollen present was from the daisy family. Johannesburg Grass, tree, weed and mould levels were low. Tree pollen included birch (Betulaceae), gum tree (Myrtaceae), …

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1 October 2021

Summary The grass season is starting with high grass pollen counts detected in Cape Town (>20 grains/cubic meter). High tree pollen levels were also recorded in Cape Town and in Bloemfontein, with moderate tree counts seen in Johannesburg. Overall, the tree pollen counts have decreased at most sites across the country. Cape Town Grasses reached …

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