Most common problem species

Press, 11 September 1986, Page 11

Most common problem species

The plants listed below are those most likely to cause damage to sewer pipes. They are given in decreasing order of severity. But note that any sewer pipe in the root zone of any plant species can be affected. Plants generally have a root zone extending outwards about IV2 times the distance of their branches from the trunk. BOTANICAL NAME COMMON NAME GROUP 1 Cinnamonum camphora Camphor Laurel Ficus species Figs and Rubber plants Cupressus Macrocarpa Macrocarpa Metrosideros excelsa Pohutukawa Poplus species Poplars Salix species Willows GROUP 2 Erythrina species Coral Trees Eucalyptus species Large Gum Trees Corynocarpus laegivatus Karaka Robinia pseudoacacia Black Locust GROUP 3 Araucaria species Norfolk Island, Bunya, Hoop Pines Bougainvillea species Bougainvilleas Brachychitron acerifolium Flame Tree Casuarina cunninghamiana River She Oak Casuarina glauca Swamp Oak Cortaderia selioana Pampas Grass Grevillea robusta Silky Oak Ilex species Hollies Jacaranda mimosifolia Jacaranda Lagunaria patersonia Pyramid Tree, Norfolk Island Hibiscus Ligustrum species Privets Magnolia species Magnolias Melia azedarach White Cedar Nerium oleander Oleander Phoenix canariensis Canary Island Date Palm Phyllostachus species Bamboos Pinus species Pine Trees Platanus acerifolia Plane Trees Chaenomeles species Quince Rhus species Rhus Trees and shrubs Schinus molle Pepper Tree Tristania conferta Brush Box Ulmus species deciduous Elnw Wistaria species Wistaria