In British Columbia, spotted knapweed (Centaurea maculosa) is being fought with Agapeta zoegana, a root-mining European moth.  Other noxious weeds in North America attacked by leafrollers include coastal wattle (Acacia cyclops), sea myrtle (Baccharis halimifolia), leafy euphorbia (Euphorbia esula), St. John Wort (Hypericum perforatum), paper bark tree (Melaleuca quinquencervia), cat-claw mimosa (Mimosa pigra), tansy ragwort (Senecio jacobeae), broom-weed (Sida acuta) and cocklebur (Xanthium strumarium).
 
IPM Practitioner, V. XXIV, $1, Jan. 2002

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