St. John's wort (Hypericum perforatum) in Western Australia
Jonathan DoddA and John K. ScottB
A Weed Science, Agriculture Western Australia, Baron-Hay Court, South Perth, Western Australia 6151, Australia.
B CRC Weed Management Systems, CSIRO Division of Entomology, Private Bag, PO, Wembley, Western Australia 6014, Australia.
Abstract
St. John's wort (Hypericum perforatum) is a minor localized weed in south-west Australia where its distribution and abundance have been stable in recent years. Factors significantly contributing to the weed's status may include:
i. noxious weed legislation that ensured regular inspection and chemical control activities,
ii. the successfully established biological control agent, Chrysolina quadrigemina and
iii. climate.
These factors should form the basis for future research activities in Western Australia before the introduction of further biological control agents is considered.
Plant Protection Quarterly (1997) 12 (2) 57-59.