Mobirise review

Polyphagous Shot Hole Borer (PSHB)

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"The infestation of both street and private trees by a borer (Poly- phagous Shothole borer) beetle in Joburg is reaching crisis point. Between 100 000 and 500 000 trees are expected to be lost in the next five years as a result." - IOL, 19 April 2018

Known South African Host Species at risk

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Tree species suitable for reproduction of next generation of beetles + growth and development of symbiotic fungi. These species include:

  • Acacia (Acacia Spp.)
  • American Sweetgum (Liquidambar Styraciflua)
  • Avocado (Persea Americana)
  • Big Leaf Maple (Acer Macrophyllum)
  • Box Elder (Acer Negundo)
  • Brea (Cercidium Sonorae)
  • California Sycamore (Platanus Racemosa)
  • Camellia (Camellia Semiserrata)
  • Castor Bean (Ricinus Communis)
  • Chinese Holly (Ilex Cornuta)
  • Coast Live Oak (Quercus Agrifolia)
  • Coral Tree (Erythrina Corallodendron)
  • Cork Oak (Quercus Suber)
  • Engelmann Oak (Quercus Engelmannii)
  • English Oak (Quercus Robur)
  • Evergreen Maple (Acer Paxii)
  • Fremont Cottonwood (Populus Fremontii)
  • Goodding’s Black Willow (Salix Gooddingii)
  • Japanese Maple (Acer Palmatum)
  • Japanese Wisteria (Wisteria Floribunda)
  • London Plane (Platanus X Acerifolia)
  • Mesquite (Prosopis Articulata)
  • Mimosa (Albizia Julibrissin)
  • Moreton Bay Chestnut (Castanospermum Australe)
  • Palo Verde (Parkinsonia Aculeata)
  • Red Flowering Gum (Eucalyptus Ficifolia)
  • Red Willow (Salix Laevigata)
  • Titoki (Alectryon Excelsus)
  • Tree Of Heaven (Ailanthus Altissima)
  • Trident Maple (Acer Buergerianum)
  • Valley Oak (Quercus Lobata)
  • Weeping Willow (Salix Babylonica)
  • White Alder (Alnus Rhombifolia)


PSHB is not known to reproduce in these species,  but it can cultivate fungi in and stress the infected tree. These include:

  • Aloe Coral Tree (Erythrina Livingstoniana)
  • Brazilian Pepper (Schinus Terebinthifolius)
  • Butterfly Orchid Tree (Bauhinia Purpurea)
  • Cabbage Tree/ Kiepersol (Cussonia Spicata)
  • California Bay Laurel (Umbellularia Californica)
  • Camphor (Cinnamomum Camphora)
  • Cape Ash (Ekebergia Capensis)
  • Cape Chestnut (Calodendrum Capense)
  • Chinese Flame Tree, Goldenrain (Koelreuteria Spp.)
  • Chinese Plum (Prunus Mume)
  • Coast Redwood (Sequoia Sempervirens)
  • Common Camellia (Camellia Japonica)
  • Common Coral Tree (Erythrina Lysistemon)
  • Elm Species (Ulmus Spp.)
  • False Olive (Buddleja Saligna)
  • Geelkeurboom (Calpurnia Aurea)
  • Honey Locust (Gleditsia Spp.)
  • Japanese Cherry (Prunus Serrulata)
  • Kapok (Ceiba Pentandra)
  • Lemon (Citrus Limon)
  • Loquat (Eriobotrya Japonicum)
  • Monkey Plum (Diospyros Lycidioides)
  • Moreton Bay Fig (Ficus Macrophylla)
  • Olive (Olea Europaea)
  • Orange (Citrus Sinensis)
  • Peach (Prunus Persica)
  • Pecan Nut (Carya Illinoinensis)
  • Persimmon (Diospyrus Kaki)
  • Pride Of De Kaap (Bauhinia Galpinii)
  • River Bushwillow (Combretum Erythrophyllum)
  • River Red Gum (Eucalyptus Camaldulensis)
  • Septee Tree (Cordia Caffra)
  • Shamel Ash (Fraxinus Uhdei)
  • Silk Floss (Ceiba Speciosa)
  • Silver Birch (Betula Pendula)
  • Star Apple (Diospyros Dichrophylla)
  • Victorian Box (Pittosporum Undulatum)

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