Invasive Plants

The Cook Islands Ministry of Agriculture seeks approval for the release of the plan pathogen Puccinia xanthii Schw. (Pucciniales: Pucciniaceae) into Rarotonga for biological control (biocontrol) of the introduced plant cockleburr Xanthium pungens Wallr. (syn. Xanthium strumarium; Xanthium occidentale Bertol.) (Asterales: Asteraceae).

The Cook Islands Ministry of Agriculture seeks approval for the release of a gall-forming wasp Tetramesa romana and an armoured scale insect Rhizaspidiotus donacis into Rarotonga for biological control (biocontrol) of the introduced plant giant reed Arundo donax (Poales: Poaceae).

Invasive plants seriously threaten native habitats throughout the Pacific region, including the Cook Islands, where numerous invasive weed species of agricultural concern are also present.

This document is to report on the work carried out to assess the status and the possibility of controlling beach burr (Cenchrus Echinatus) on the island of Pukapuka. This work was conducted by the National Environment Service and funded under the Regional Invasive species program.

This report outlines the work carried out to control Red Passionfruit (Passiflora Rubra) on the island of Mauke. Treatment methods used in controlling Red Passionfruit on Mauke, monitoring and analysis of data collected throughout the last 2 years were highlighted.

Wedelia, creeping oxeye, or the trailing daisy, a deceptively beautiful, bright emerald-green creeper with bright yellow daisy-like flowers, is one of the world's most aggressive weeds and is listed among these other destructive organisms as one of the worlds 1000 worst invasive alien species. IT is now firmly established in Melanesia and throughout the Pacific islands.