Pests of the Bay of Plenty - Bay of Plenty Regional Council

Houttuynia Houttuynia cordataA deciduous, creeping, perennial groundcover, which can grow to70 cm tall. Leaves are heart-shaped and are multi-coloured yellow,green, bronze and scarlet. The flowers in summer are small, whiteand have four petals surrounding a central spike.Risk areas: Moist loamy soils, wetlands, native bush, gardens.RESTRICTED pestsJapanese honeysuckle Lonicera japonicaAn evergreen, woody, clockwise twining, vigorous climber that cansmother all vegetation beneath. The oval leaves are in oppositepairs. Pairs of two-lipped, sweetly scented tubular white flowersoccur from September to May, and are followed by egg-shaped,glossy black berries.Risk area: Roadsides, wasteland, plantation forest, hedges,shelterbelts.Japanese spindle treeEuonymus japonicusMuch branched shrub or small tree up to 7 m tall with round orslightly four-ribbed twigs. The leaves are glossy, ovalish, andfinely toothed, in opposite pairs along stems. Sold as variegatedcultivar but reverts to green. Inconspicuous flowers are producedfrom December to March, followed by small pink berry and orangeseed.Risk area: Disturbed bush and shrubland, coastal areas, forestmargins, and cliffs.Japanese walnut Juglans ailantifoliaA wide-spreading, strongly-suckering, deciduous tree up to15 m with pinnately compound leaves growing to 60 cm long.These have 9-17 leaflets that grow to 18 cm long and 8 cm wide.Produces male catkins to 15 cm long, and red female catkins onerect spikes. The nut is sharply beaked, 2.5-4 mm long.Risk areas: Stream banks, low and disturbed forests, amenityareas, wetlands.Jasmine Jasminum polyanthumAn evergreen, rampant, climbing, perennial vine. Leaves areopposite, pinnate and usually have seven, long-stalked spear oregg-shaped leaflets. Flowers (January to December) are veryfragrant, white and pink when in bud. Stems are very tough androoting occurs at the nodes.Risk areas: Low and disturbed forest, forest margins, open areas,amenity areas, gardens.A user guide to the Bay of Plenty Regional Pest Management Plan 2011 – 201633